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About Ralph Salier-Hellendag
(Top Expert on this page)

Expertise
Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.

Experience
Science Fair Judge for many years and have helped several students get to state level competition. Most recently 2 of my students received state level awards and one went on to the nationals in Washington DC.

Education/Credentials
BA Archaeology - Anthropology
MA Business Anthropology

   

You are here:  Experts > Science > Science/Nature for Kids > Science for Kids

Questions Answered By Expert  Ralph Salier-Hellendag 
In Category  Science for Kids

SubjectDate Asked

Do our senses really perceive the real world?7/14/2008
  Q: I have read article from some website...and I have some issue concerning the existence of science ...
  A: We are conversing via email. I am human so is the person sitting next to me. Thus we have proof of ...
Do our senses really perceive the real world?7/10/2008
  Q: I have read article from some website...and I have some issue concerning the existence of science ...
  A: I understand your confusion. The premis of the U-Tube film in my view is nonsense. Yes every thing ...
Do human visual and colour receptor work differently? do human have the same visual experience7/3/2008
  Q: I got another question on human vision -Does Human have the same colour vision receptor? Do they ...
  A: My wife is a graphic artist and when she does a color correction to a photograph I have taken, the ...
Do human visual and colour receptor work differently? do human have the same visual experience7/3/2008
  Q: I got another question on human vision -Does Human have the same colour vision receptor? Do they ...
  A: Normal eye sight is called 20/20 this means that an object of s specific size can be seen clearly ...
Do human visual and colour receptor work differently? do human have the same visual experience7/3/2008
  Q: I got another question on human vision -Does Human have the same colour vision receptor? Do they ...
  A: Humans have color perception because of the types of receptors in the retina of the eye. Not all ...
Encouraging my scientific daughter7/2/2008
  Q: My daughter, age 10, is going into the 5th grade and absolutely LOVES science. She won last year's ...
  A: Very good! I love it when a mom or dad want to encourage their daughters in the sciences. My own ...
Does every human taste receptor work differently? Do we enjoy the same kind of taste sensation?7/1/2008
  Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
  A: Good question. It will depend on several factors, first of all the nature of the food stuff and ...
Does every human taste receptor work differently? Do we enjoy the same kind of taste sensation?6/30/2008
  Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
  A: I belive that most mammels and many other animals have taste receptors on their toungs. The taste ...
Calcium6/22/2008
  Q: for a school project we have to choose an element from the periodic table. we are asked to draw an ...
  A: When doing a chemical formula or when trying to determine the out come of a chemical reaction, the ...
chemistry6/21/2008
  Q: what is the process of making dancing napthalene balls?
  A: Napthalene balls can be made to "dance" by placing them on a hot plate. This causes the naptha to ...
Purge Dip System and Hydrostatic Pressure6/2/2008
  Q: What is purge-dip system? How it works in concept of hydrostatic pressure? (Please help me further ...
  A: WOuld you be kind enough to tell me what the application of this purge dip system is? The ...
FACTS ABOUT FRICTION6/1/2008
  Q: MY SON IS NINE YEARS OLD, AND IS NEEDING TO KNOW TEN INTERESTING FACTS ABOUT FRICTION FOR HIS ...
  A: 1) trains have steel wheels and run on steel track. but it is the weight and friction t hat allows ...
magnets and capacitors5/28/2008
  Q: why we can't use a magnet as a capacitor since that a magnet has south pole(negative) and north ...
  A: It depends on the type of circuit and the type of capacitor. There are many types of capacitors: ...
coke cans5/28/2008
  Q: what is the metal used to make the coke can? Why is this metal used? why do some of the bubbles seem ...
  A: Most cans are now made of Aluminium. Some are made of steel. But those used by Coke-Cola are for ...
about coke cans5/26/2008
  Q: murcia@yahoo.com.au thank you so much *kisses* love you , you saved my life 1. WHY DOES IT GET ...
  A: 1) what you have observed is called condensation. The cold can from the fridge draws moisture out ...
chemistry5/25/2008
  Q: My 12yr old son wants to run a science experiment on testing the flammability of a variety of ...
  A: This is not as easy as it may seem. Many of the liquids you indicate are not easily flamable due to ...
Ventlation for Model House5/23/2008
  Q: for a science project we need to build a model home that has to contain heat, and not let any heat ...
  A: The best material to use is some kind of foam board like foam core several layers thick or perhaps ...
Sound5/22/2008
  Q: My son is doing a 4th grad science project and we are trying to figure out the best why to show what ...
  A: The best way to show what sound travels best through a solid, liquid or gas. I believe that a low ...
Egg drop/launch competition5/21/2008
  Q: I have a project called the 'Egg Drop/launch competition'. I have only a limited supply - I will ...
  A: Take a 2L empty drink bottle. Cut an egg sized hole in the bottom. (Be careful not to cut yourself) ...
Diff between salt water, poison and water5/18/2008
  Q: Hope you can help as I am fresh out of ideas. My niece (8) has been asked to answer the question ...
  A: I have had very young science students get help from local colleges, universities and even the ...
science fair5/16/2008
  Q: Hey I'm doing a science fair project and i need to know why Styrofoam is a good insulator. ...
  A: Styrofoam and other similar foam products are good insulators because they do not transmit heat or ...
Insulated shoebox house.5/16/2008
  Q: I have a question on how to make the BEST insulated shoebox house. I have to have two rooms, one to ...
  A: to insulate your houses,, you can use the same materials. There is builders foam with different "R" ...
soda5/15/2008
  Q: I was wondering if you could give me any information on soda and what it contains. I need this info ...
  A: , What does soda contain. Well that depends on the soda. A cola contains 95 purified water, ...
Explosion in nature5/15/2008
  Q: I'm a counselor for 9-10 year olds this summer and we are looking to incorporate nature into our ...
  A: Air pressure explosions are generally cool and safe. You can also do the exploding soda but this ...
boat lock5/13/2008
  Q: ok, my class is doing this boat lock which in this case the toy boat has 2 rise how ever many ...
  A: You will some help on this from a parent potentially. The basic design will require 2 pieces of ...
carbonation of soda5/7/2008
  Q: My daughter wants to measure the amount of carbonation in different soft drinks for her science fair ...
  A: This is a hard experiment for a third grader due to the amount of work it takes to get good ...
5th Grade Science Project5/5/2008
  Q: Ralph, My son is really into football. He is in the 5th grade. He has a Science Fair coming up. ...
  A: There was a recent "Mythbusters" program which demonstrated that filling a foot ball with Helium did ...
dissolving sugar4/30/2008
  Q: Which will dissolve in water quicker, a small sugar cube or sugar granules? Our Second Graders ...
  A: There may be many reasons for this from the temperature of the water to the size of the sugar ...
Science project4/29/2008
  Q: My son is doing a science project on does ice cubes melt faster in water or air. How much ice cubes ...
  A: Sounds like you may be helping your son too much. It is very important that he does the experiment ...
nail polish chemicals4/27/2008
  Q: are there any natural alternatives to the chemicals in nail polish. plant extracts or anything that ...
  A: Natural botanicals and minerals are also chemicals but perhaps not as processed. Even very ...
how can i heat?4/22/2008
  Q: .. how can i heat somethi in the lab?wich what instruments?an what is heat
  A: Heat can come from different sources in the lab. 1) a bunson burner which uses a wick and alchol ...
chemistry4/17/2008
  Q: why did Mendeleyev change the layout of the elements into rows and columns? When Mendeleyev changed ...
  A: He hypothisized that the weight of the elements were based on the structure of the elements ...
Sink and Float4/10/2008
  Q: My daughter has a science project that requires her to find something that will float in water for ...
  A: What you are looking for is a open cell sponge. This will stay on the surface and as it absorbs ...
EVAPORATION4/8/2008
  Q: mY 9 YEAR OLD PROJECT IS TO DETERMINE WHICH EVAPORATES QUICKER, WATER OR SODA? WE HAVE PLACED TWO ...
  A: I would use a specific amount of water and soda, perhaps no more then 1 liquid ounce of each. Place ...
friction4/7/2008
  Q: How exactly does sliding or rolling friction have to do with snowboarding?
  A: The interface between the board or ski or sled and the snow, water or sand is the key to the speed, ...
science4/5/2008
  Q: one is how do magnets attract different objects and the other is what type of objects do magnets ...
  A: Magnets attract materials which are magnetic. This means that they must fit into one of several ...
3rd grade Invention Convention4/2/2008
  Q: My son needs to create an invention that includes a Simple Machine - i.e. lever,wheel and axle, ...
  A: A simple invention/machine. Does your son have match box cars and perhaps a match box car track? ...
helium4/2/2008
  Q: what does it comprise of and what makes baloons float
  A: Baloons float because they are filled with either Helium or hydrogen. Hydrogen can be rather ...
aquatic mold growth3/29/2008
  Q: I tried to grow sugar crystals in water, but ended up with round, fuzzy, white/green growths ...
  A: It could be any number of moulds. Some colonial bacteria may take a similar form. Growing sugar ...
Egg throwing Project3/26/2008
  Q: If you threw a raw egg over a house and it lands on the backyard lawn, will the shell break?
  A: Unprotected and landing on the lawn, the probability of the egg breaking is very high - 99.99% there ...
science3/23/2008
  Q: Which would boil faster plain water or salt water and why?
  A: Plain water should boil faster but it may depend on many factors: 1) density of the salt solution ...
science3/22/2008
  Q: which keeps soda colder cans or plastic bottles and why?
  A: That depends. If the containers are kept in a cooler with ice, the cans but out in the sun on a ...
Science Fair Project: Helium3/21/2008
  Q: My name is Eric. I am doing an experiment on the effects of helium on a soccer ball when it is ...
  A: 1) Helium is an element. Like Oxygen and Nitrogen it is part of the air we breath every day. ...
Forming my Hypothesis3/20/2008
  Q: My Science Fair is coming and I have my problem, but my hypothesis is hard to form. My problem is ...
  A: Yes, surfactants is what makes the bubble in detergents and soaps. Different kinds of surfactants ...
stain removal3/20/2008
  Q: My science fair project I am researching is, "Which white material has easiest stain removal?", and ...
  A: My guess would be a synthetic like nylon or perhaps a polyester. But it is dependant on the nature ...
water3/17/2008
  Q: What does water freze faster in? [Tin, Dixie cup, Tupperware, paper, Styrofoam, ceramic.]
  A: It would be a toss up between a "Tin" or dixie cup. Depending on the thickness of the paper, this ...
3rd grade invention3/16/2008
  Q: My 3rd grader needs idea's for an invention, that she can make from recyclable products.
  A: Here are several ideas, 1) a sound attenuation box. Take a box big enough for a radio to fit into ...
Partical seperation3/13/2008
  Q: I am doind a project and need help. I need an examples of a household mixture that can separatre(eg. ...
  A: Most will be oil and water or oil and vinegar. Then you can also have a pulpy orange juice and the ...
Science Fair Project: Bubbles3/12/2008
  Q: My name is Brian. I am investigating bubbles for a Science Fair Project. Can you help me by ...
  A: I will try to answer your questions but they may not be in numerical order. 11) a Bubble is ...
Science3/10/2008
  Q: My daughter is in the sixth grade, and she needs to make a simple invention for her science fair. ...
  A: How about an "around the corner pea shooter" This uses a flexi straw and a wad of paper. You can ...
lava lamp3/10/2008
  Q: Why water and oil do not mix?
  A: Oil and water do not mix because of a difference in the density of the two substances. In a lava ...
Ionic, covalent, and molecular bonds3/7/2008
  Q: What experiment can I make to differentiate between ionic, covalent and molecular bonds according ...
  A: This is a difficult question to answer. There is very little differentiation between Covalent and ...
freezing water3/7/2008
  Q: How does the material the container is made from affect the freezing time of water - plastic ,glass ...
  A: The container can make a big difference if it is a good conductor of cold. Aluminum for instance is ...
Acid and Wood3/7/2008
  Q: My 4th grade son is having a hard time finding research on what types of household acids actually ...
  A: He has chosen a very difficult subject. Wood is made of cellulose a very tough material not easily ...
plants3/6/2008
  Q: do living plants give off moisture? and if yes how? and how can you show it?
  A: Yes, Depending on the type of plant, it is how plants pull water out of the ground. Place a ...
mirrors and reflectivity3/5/2008
  Q: I'm asking this question on behalf of my 8-year- old son - am not really able to find suitable ...
  A: Good question. A mirror is made with a very clear, very flat, with no faults - kind of float ...
Teaching importance of Handwashing to elementary age3/4/2008
  Q: I am working with my RN clincal group at a local "KId Fest". We are trying to find fun ways to show ...
  A: Great Idea. The web site below may have some posters you can use but I'm not sure. there are ...
remote lighter2/29/2008
  Q: I wanted to create a fireworks display that I could set off from a distance. I read somewhere that ...
  A: Fireworks of any type are dangerous and have been known to hurt, maime and even kill people. This ...
Carbonated sodas2/27/2008
  Q: My Brother is conducting an experiment, which involves taking different Carbonated Sodas out of ...
  A: Why does soda freeze in the can but not in an open container? The carbonation has a lot to do with ...
Static electricity2/26/2008
  Q: Why does polyester make alot more static than cotton fabric? ANSWER: Hi Kris, Polyester is a kind ...
  A: Some kinds of fibers including polyesters, wool, nylons and other synthetics develop a potential ...
science experiment question2/25/2008
  Q: For my science project i was testing which liquid would melt a lollipop faster..... vinegar, ...
  A: a lollipop is made of sugar. Vinegar has water in it but it is mostly Acetic Acid. And though sugar ...
making a candle2/24/2008
  Q: i was watching tv and i caught the end of this lady making scented candles. how do i make scented ...
  A: Ke-J You will need candle wax, colorant and scent. You will also need wick and a mould to pour the ...
earth science2/23/2008
  Q: Why does salt water evaporate faster? Is it because sait water decrease the specific heat of water?
  A: You are basing the your question on what fundamental facts? Did you take a container of salt water ...
model house2/15/2008
  Q: We'd like to do a homeschool unit study on construction while our new house is being built. One of ...
  A: Many colleges and Universities have schools of architecture and they build many kinds of models. ...
science2/10/2008
  Q: what is radiation
  A: There are all kinds of radiation. Sun shine is a type of radiation and the heat from a radiator is ...
SCIENCE2/10/2008
  Q: I AM IN FOURTH GRADE AND DOING A SCIENCE FAIR PROJECT THE PURPOSE IS TO FIND OUT IF IRON WILL RUST ...
  A: Water has naturally disolved gases in it. These gases are dependent on the source of the water. ...
Soda carbonation-balloon method2/8/2008
  Q: I'm helping my daughter and her friend with a science project for school. They are wanting to ...
  A: This is a question of volume. When you do a displacement, the amount being displaced is equal to the ...
science fair poster ideas2/6/2008
  Q: my daughter is in the 2nd grade and has a science fair poster due in a few weeks. the topic is "it ...
  A: So "WHAT COMES NATURALLY"? Breathing Eating Moving Hearing Plants growing, animals being born, ...
science project2/6/2008
  Q: I am in grade 8 and have a science project assignment that has to do with mechanics and I have no ...
  A: You can combine magnetics (Physics) and mechanics. You can make a rheological solution using liquid ...
Science fair project2/5/2008
  Q: For my science fair project my question is how does carbonation and the amount of it effect the rate ...
  A: The rate of freeze is effected by the amount of carbonation because as the water freezes, the ...
science experiment with eggs1/30/2008
  Q: where can I find information on why and how an eggshell turns clear after heating it over a flame ...
  A: This is actually an optical illusion casued in part by defraction of light thru the water. The egg ...
Science project paper1/29/2008
  Q: I have to come up with a reasearch paper topic related to my science project, ninth grade. It is ...
  A: There are different kinds of wood sealers but most work to "fill the pores" in the wood and the ...
Freshwater & Saltwater1/29/2008
  Q: What is the theory for saltwater lakes?
  A: Suki, Most saltwater lakes have no outlet. In such cases, the evaporation of the water in the lake ...
Yeast experiment1/29/2008
  Q: My son did a science fair project with yeast, sugar, baking soda, vinegar and salt to see which ...
  A: The vinegar took longer to react with the baking soda then the yeast with the sugar. Vinegar, an ...
a question1/27/2008
  Q: what is the difference between a boy's and girl's feet???
  A: Nothing anatomically. They have the same number of bones and toes and function in the same way. ...
science fair project1/25/2008
  Q: I'm a fifth grader and i have to do a science project on either magnets,electricity or mixtures and ...
  A: How about a combination of the two. Magnets and mixtures? You can make a mixture of bits of metal, ...
indium1/24/2008
  Q: AND MY TEACHER GAVE US A SCIENCE TERM PAPER THE ONLY THING IS I CANT FIND ANYTHING ABOUT HOW THE 2 ...
  A: There is very little information on these two scientists. The lead researcher, Ferdinand Reich was ...
Protein Digestion1/23/2008
  Q: I am doing an experiment to test the effect of different pH levels on the digestion of proteins. The ...
  A: For the blank or control you will need to do two tests in the spectrophotometer 1) with water only ...
Protein Digestion1/23/2008
  Q: I am doing an experiment to test the effect of different pH levels on the digestion of proteins. The ...
  A: Yes, make the gelatin using hot water and then pour this into each test tube. Allow it to harden. ...
science1/23/2008
  Q: i am doing my science fair on which pop fizz last the longest and i want to know why does some fizz ...
  A: Carbon Dioxide or Carbonation is a gas that is forced into the soft drink (like Coke or Pepsi) to ...
THAWING ICE con't1/23/2008
  Q: I had to post it as a new question because it said too many follow-ups. -_- Thank you for your ...
  A: IR is infared Radiation. It is part of the spectrum of light like a rainbow. In a rainbow, we can ...
How temperature impacts helium1/23/2008
  Q: I am trying to find an answer to the above question. There are many websites that have the answer, ...
  A: Helium is a very light gas. The Helium molecule is very small, only Hydrogen is smaller. ...
carbonation/dissolve experiment1/22/2008
  Q: My experiment deals with determining carbonation level by how much of a jelly bean coating is left ...
  A: You need to have a "before" and "after" measurement for the beans so that you have a comparison. ...
THAWING ICE con't1/22/2008
  Q: I had to post it as a new question because it said too many follow-ups. -_- Thank you for your ...
  A: I was right, it has to do with the amount of disolved gas that is in the water and there could be ...
WHICH THAWS FASTER?1/22/2008
  Q: If I put water that is 40 degrees and water that is 180 degrees in a -10 degree walk-in freezer and ...
  A: As I suspected, since you used boiled water, the water was effectively degassed so was much more ...
WHICH THAWS FASTER?1/22/2008
  Q: If I put water that is 40 degrees and water that is 180 degrees in a -10 degree walk-in freezer and ...
  A: How long did the 71 and 180 sit out? Was the 40 right out of the tap? The reason I am asking is ...
WHICK THAWS FASTER?1/22/2008
  Q: If I put water that is 40 degrees and water that is 180 degrees in a -10 degree walk-in freezer and ...
  A: I will make the assumption that they are being thawed at the same temperature and in roughly the ...
science1/21/2008
  Q: i am doing my science fair on which pop fizz last the longest and i want to know why does some fizz ...
  A: I'm not sure about your question. When you say it lasts longer, do you mean once the bottle is ...
Protein Digestion1/18/2008
  Q: I am doing an experiment to test the effect of different pH levels on the digestion of proteins. The ...
  A: Hmm, I'm not sure. I would suggest that you do something very simple like use gelatin. Pour gelatin ...
science fair project1/18/2008
  Q: i need your help cause i have an idea but i don't know if it will work. so here is my question at ...
  A: I would think that it would loose carbonation very fast at both ends of the temperature range. If ...
solar power1/16/2008
  Q: i have a project do and i was wonderinghow is solor power diffrent from the power we use now
  A: Solar power uses a special kind of crystal which takes light and converts it into electricity. This ...
solar power1/16/2008
  Q: umm i have science progect bue on 1/18/07 wnd i need to what are the pros and cons on solar power
  A: The pros: Free energy, relatively low cost and with proper care can last many years The Cons: can be ...
Project about taste and control groups1/16/2008
  Q: my eight-year old daughter is doing a science fair project about the preferred taste of butter. She ...
  A: She does not have a control group. A control group would be one that is given a product that has ...
egg drop1/13/2008
  Q: i have to make a contraption that uses only 500 q-tips and two meters of string that holds an egg in ...
  A: Make a basket of Q-tips by weaving them together and use the string to put the basket together into ...
science fair projects1/13/2008
  Q: I really nead a good science fair project/idea!! Last year, I went to many science fair competitions ...
  A: Since you seem to have had a wining idea last year, why not expand upon it and look at saliva, ...
I need help finding a science project1/11/2008
  Q: I really don't know what type of science project to do and your department sounded good so can you ...
  A: If you answer these questions, then I can help you a lot better: 1) do you like plants? 2) do you ...
Mini Pepsi Cans1/11/2008
  Q: Could you please tell me why the Mini Pepsi Cans float? What is so different about them compared ...
  A: It is all about density. The mini Pepsi cans are less dense then water. This means that they are ...
effect of acid on tooth enamel1/10/2008
  Q: How do I measure the effect that different acids, like citric, lactic, or acetic, have on tooth ...
  A: Some postal scales which weigh both in ounces and grams may do the trick but if this is a problem, ...
effect of acid on tooth enamel1/10/2008
  Q: How do I measure the effect that different acids, like citric, lactic, or acetic, have on tooth ...
  A: The best way is by weight. Take a known amount of egg shell by weight and then using the same ...
electromagnetic1/5/2008
  Q: does an electromagnetic field or force have an effect on gravity? if yes how and in what ways?
  A: Gravity, Electromagnetism, The strong and weak atomic force are all part of the basic "forces" found ...
Air polution and transportation1/4/2008
  Q: I want to do a science project explaining how transportation effects air pollution, mainly ground ...
  A: If you tell me the City and State you live in (assuming you are in the USA) I can put you in touch ...
need help in science1/3/2008
  Q: what sodas have the most fizz and carbonation?
  A: Fizz and carbonation is one and the same. Which one has more? That is a very difficult question to ...
Boiling liquids1/1/2008
  Q: My 9 year old son would like to do a science fair experiment comparing the boiling ...
  A: Boiling points for different substances is kind of tricky especially "mixtures" like liquid soap. ...
Boiling liquids12/31/2007
  Q: My 9 year old son would like to do a science fair experiment comparing the boiling ...
  A: Good Idea but only one problem, all of these are basically water with stuff in the water. To ...
Heating element12/21/2007
  Q: Is there a heating element such that I can evaporate a large amount of water? For a school project, ...
  A: There are many different ways to do this from using thin sheet heating to using a boiler (fired by ...
the 5 kingdoms12/14/2007
  Q: having trouble with my science project. have to create a poster with pics and info about the plant, ...
  A: You can find lots of pics of these "families" on the internet. I am sure that you can also find ...
chemistry12/14/2007
  Q: What is the difference between a bottle of water and a bottle of hydrogen and oxygen?
  A: Not much other then the fact that Hydrogen and Oxygen are both gases and that the bottle for the ...
egg drop project12/12/2007
  Q: I want to understand how dropping an egg within straw and masking tape box/configuration that I ...
  A: That is amazing! Well done! 20ft is quite remarkable. It must have fallen just right. But to answer ...
Temperature and container12/11/2007
  Q: My fourth grader is doing a science project on "Will your Coke stay colder longer ina Bottle or in a ...
  A: The conductance of temperature thru different materials would be a good starting place. Cold (or ...
HELP!12/9/2007
  Q: two Quetions. 1- do u know of any other websites about fertilizer compared to the Growth of plants? ...
  A: There are several places on line you can look. First would be the manufactures web sites like ...
science fair help12/5/2007
  Q: im science topic is: Will soda lose carbonation faster in hot or cold temperatures? but i dont know ...
  A: You can write about all of the different carbonated soft drinks and how some have more or less ...
ap biology12/4/2007
  Q: Photorespiration decreases photosynthetic output by 50%. Would you expect the figure to be higher or ...
  A: To some degree this will depend on the variety of the cultigen and which of the more then two dozen ...
science,conductors and insulators12/1/2007
  Q: What informational sites can i go on to get help writing a paper on these subjects?
  A: Sounds like you are doing something with electricity. Conductors allow the current to flow, like ...
Science Fair11/28/2007
  Q: I am doing a project on which metals rust faster than others. Do you have any ideas to get me ...
  A: I would stick to one metal and then see what the effects are by subjecting the metal to different ...
stain removal11/28/2007
  Q: I am doing a science fair project and i need some holp with these Q&A's What is the cemistry ...
  A: Stains can be organic or inorganic in nature. Such as blood or grass (organic) or clay or ink ...
Science11/27/2007
  Q: If cotton is a solid how can we press it?
  A: I'm not sure I understand your question. You can "press" any solid. It does not matter if it is ...
plant growth11/27/2007
  Q: does milk help the growth of plants?
  A: Well, milk is mostly water, some calcium and other organic substances. The plant would use some of ...
Determining IDV, control, and DV11/27/2007
  Q: I'm doing a research project and my topic is if seed sizes (different legume seeds) determine ideal ...
  A: The key is the term "breaking the surface". These seeds may germinate at different rates due to ...
Determining IDV, control, and DV11/27/2007
  Q: I'm doing a research project and my topic is if seed sizes (different legume seeds) determine ideal ...
  A: If all other things are the same, then depth is the variable you are testing. The "recommended" ...
Determining IDV, control, and DV11/25/2007
  Q: I'm doing a research project and my topic is if seed sizes (different legume seeds) determine ideal ...
  A: I would use one type of legume like a string bean or pea. Then using the same potting soil, type of ...
stomach digestion11/25/2007
  Q: For my Sci. fair topic I am going to observe how the digestion of protein varies at different pH ...
  A: This will require the use of Hydrochloride acid. This is a very powerful acid which needs to be ...
solution11/24/2007
  Q: sir why turpenten oil is mixed in paint for painting? how trees get salts from soil?
  A: Turpentine oil is sometimes used as a mixing media for various pigments although this is not the ...
acid base titration11/24/2007
  Q: I have some coursework, and I have to plan an acid base titration, and the sizes of apparatus I ...
  A: It has been a very long time since I have done acid-base titration. This is a method to determine ...
Growing Algae11/23/2007
  Q: My friend and I are planning to do a project involving the cultivation of algae. However, we ran ...
  A: This is a very hard one to cover, clearly the detergents, mineral content of the water used (clean ...
carbonation in soda11/21/2007
  Q: I need to find out how to measure loss of carbonation in a 2 liter bottle of soda at different ...
  A: Displacement is when a gas goes into an inverted container containing water. As the gas flows into ...
carbonation in soda11/21/2007
  Q: I need to find out how to measure loss of carbonation in a 2 liter bottle of soda at different ...
  A: You will also have some amount of evaporation. This will be more pronounced in the one at 90 ...
carbon and nitrogen cycle11/20/2007
  Q: as part of my A level geography course I've been asked to find out about the carbon and nitrogen ...
  A: There is loads of information on both cycles on the internet. Try the following web sites: ...
physical science11/20/2007
  Q: what r the physical and chemical properties of the atom titanium in kids definition
  A: Titanium is a very important metal used in airplanes, rockets and other uses where the metal has to ...
My science fair prodgect11/19/2007
  Q: My science fair project is which soda has the most carbonation, and I need to know what makes ...
  A: The carbonation is Carbon Dioxide Gas which is "forced into the soda just before it is capped or ...
carbonation soda11/18/2007
  Q: . I'm going to use a balloon so the carbonation of a soda can fill it up but i don't know how to ...
  A: The fastest and easiest way is by water displacement. Once the ballon has the gas from the soda ...
chemistry reaction11/18/2007
  Q: I have a problem with my science fair project. I just do not understand why my home made cleanser ...
  A: Baking Soda is sodium Bicarbonate a base. Vinegar is an acid. Hydrogen Peroxide is a base and dish ...
domed mountain11/14/2007
  Q: what is the defind DOMED MOUNTAINS
  A: These are typically "rocks" which have been exposed to the elements and are the solidified ...
pop explosion11/13/2007
  Q: my daughter is doing a science project,looking for the answer, which pop makes the biggest explosion ...
  A: I have to ask this question because, quite frankly I'm stumped. What do you mean by explosion? Do ...
biology11/11/2007
  Q: How do amoebas:respirate,sense,grow,eat and excrete
  A: An amoeba is a single cell animal of remarkable complexity. The can live in some of the most ...
Science Fair Project Question11/9/2007
  Q: My daughter is 11 (in Middle School) and she is doing her science fair project on which stays colder ...
  A: The research she needs to do is on thermal conductance of different materials like steel, aluminum ...
sodas11/8/2007
  Q: I have to perform an experiment on which brand of cola soda; Pepsi, RC or Coco Cola keeps it's fizz ...
  A: 1) same size bottles 2) same temperature 3) same amount of soda left in the bottles 4) timer 5) ...
science fair11/6/2007
  Q: Where can i find the protien albumin and ninhydrin isopropanol in Houston, TX? i need these ...
  A: There are several chemical supply houses in Houston. One being Fisher Scientific. However, you may ...
CO2 in diet colas11/5/2007
  Q: How can I find out how much CO2 (carbonation) is in Diet Coke, Diet Pepsi, and Publix (local brand) ...
  A: This is a well kept secret by these companies. And in fact, each bottling location uses slightly ...
science11/5/2007
  Q: how a bacteriophage attacks a bacteria cell?
  A: Micro Biology is not strong field for me buy as I understand it, a Bacteriophage is generally a ...
soda project10/31/2007
  Q: My niece has a science project to determine if soda looses it's carbonation faster at room temp. vs ...
  A: This is not easy to do. The best way is bubble rate. Do cold carbonated drinks have more bubbles ...
SALT WATER EFFECT ON BEAN PLANTS10/29/2007
  Q: You gave us the info for the effect of salt water on bean plants. What do we do when all of our ...
  A: Wait till they have all germinated. It should only be another day or two. If it does not germinate, ...
ice10/24/2007
  Q: if i took 4 plastic cups and put construction paper on 1 cup,put plastic wrap on another and put a ...
  A: That depends on the temperature and the colors used. Also the kind of plastic the cups are made of ...
Science fair project10/21/2007
  Q: My child is in first grade and wants to do his project on which soda pop has the most fizz. He is ...
  A: First of all I would recommend using bottles of pop vs. cans. With a can, you can't see the ...
SCIENCE FAIR HELP!!10/19/2007
  Q: My 7 year old son has decided to enter the school science fair. I am not science minded, and he is ...
  A: YEs, Just two eye droppers per day per plant. Things to keep an eye on: If your house is very dry ...
Science Progect10/19/2007
  Q: How long does it take for a 2 liter bottle of soda to go flat? ANSWER: Hi Allison, That depends on ...
  A: Ok, a 2L bottle of Coke left open on the counter vs. Pepsi. I would say that the Pepsi would go ...
pepsi/diet pepsi float-sink experiment10/19/2007
  Q: I have to make my own experiment for determining why a can of pepsi sinks in water and a can of diet ...
  A: Since 95%+/- is water, what you have left is the "syrup" used to make the soft drink. This is mixed ...
Science Progect10/19/2007
  Q: How long does it take for a 2 liter bottle of soda to go flat? ANSWER: Hi Allison, That depends on ...
  A: Was the cap put back on? It will go flat faster at room temperature then in the frige. The reason ...
pepsi/diet pepsi float-sink experiment10/19/2007
  Q: I have to make my own experiment for determining why a can of pepsi sinks in water and a can of diet ...
  A: An interesting idea. Sure, it should work. But weigh each one very carefully. Remeber to subtract ...
Science Progect10/19/2007
  Q: How long does it take for a 2 liter bottle of soda to go flat?
  A: That depends on several factors: 1) was the bottle allowed to remain open to the atmosphere (cap ...
PLANT; ROOTS,STEMS,AND LEAVES10/18/2007
  Q: WHY IS IT IMPORTANT FOR THE ROOTS OF MANY DESERT PLANTS TO REMAIN NEAR THE SOIL'S SURFACE RATHER ...
  A: This may seem counter intuitive. But since it rains so infrequently, the plants of the desert have ...
SCIENCE FAIR HELP!!10/18/2007
  Q: My 7 year old son has decided to enter the school science fair. I am not science minded, and he is ...
  A: Good choice. Ok, here are the instructions. They need to be followed carefully and your son ...
SCIENCE FAIR HELP!!10/17/2007
  Q: My 7 year old son has decided to enter the school science fair. I am not science minded, and he is ...
  A: The easiest project to do is one with growing beans. Go to the closest garden shop or home supply ...
contraption10/7/2007
  Q: My son has to build a contraption that bounces a ping pong ball into a container. It must bounce 12" ...
  A: a ramp down which the ball rolls, falls off the end hitting a wedge bouncing 12" up hitting a see ...
science10/5/2007
  Q: How Do You Make A Baloon Method That Test The Measure Of Carbonation In Soda
  A: best way to do it is to take a cap from an old bottle, drill a hole into it and then put the ballon ...
7th Grade Science Project10/2/2007
  Q: My son has been asked to build a replica of Noah's Ark to scale and have it float in a pond for 30 ...
  A: I would suggest Bass wood vs. balsa. Balsa floats well but it is so light that it could be blown ...
please help me with my homework9/30/2007
  Q: i am really stuck on my homework please can you help me. this is what my sheet says to do Describe ...
  A: Sorry, A volital is an oil with a very low evaporation point. The complex oils in coffee ...
please help me with my homework9/29/2007
  Q: i am really stuck on my homework please can you help me. this is what my sheet says to do Describe ...
  A: The hot water acts as a solute. I may dissolve some constiuants of the coffee and then gives you a ...
IB Biology: Yeast Fermentation Lab9/29/2007
  Q: We recently performed a yeast fermentation lab in class to determine the effects of different sugars ...
  A: You are right about them having the same molecular formula but structurally they are very different. ...
methods of seperating a mixture9/28/2007
  Q: can you please explain to me about the different methods adopted for separation of different ...
  A: I am sorry but this is some what out side of my area of expertise from a chemistry perspective. ...
acid9/24/2007
  Q: Television commerecials portray the "acid stomach" as needing immediate R-O-L-A-I-D-S. is the ...
  A: Yes, the stomach produces a weak form of hydrochloric acid to help in the digestion and breaking ...
ice9/24/2007
  Q: i read on here that Water for instance in the frozen state is less dense then liquid water which is ...
  A: This is a very interesting question. It may have a very large impact on life in that creatures and ...
matter9/21/2007
  Q: How do you measure the mass of gases?
  A: It is typically done by volume and pressure. So if you blow up a ballon with helium and you know ...
Electricity from Magnets9/20/2007
  Q: My daughter and I saw an experiment at a science museum where a magnet was dropped down a clear tube ...
  A: This sounds like a Faraday device which uses small incandecent or LED type bulbs. The movement of ...
Soda Carbonation9/16/2007
  Q: my name's Jhanna and I am doing a Science fair experiment for school. I am in 7th grade and I can't ...
  A: Have you done the experiment yet? The purpose of a science fair experiment is to learn and ...
wood and water9/13/2007
  Q: My God-son has to start his science experiment and he chose water and wood. my question is where can ...
  A: Well that is the whole purpose behind the experiment so that the student does the experiment and ...
density9/10/2007
  Q: Explain how density is affected by temperature, pressure, and phase S,L,V in water and other ...
  A: The Density of a substance is dependant upon the nature of that substance. So for instance if you ...
Amoeba9/10/2007
  Q: What is Amoeba's function??
  A: An Amoeba's function is similar to that of other microscopic animals. They eat. Most every thing ...
Measuring carbination in soda9/7/2007
  Q: My 6th Grade daughter wants to get started but we are not sure how to. She doesn't think the balloon ...
  A: Most any kind of thermometer will work. A digital works the best as it is easy to read and they are ...
Measuring carbination in soda9/7/2007
  Q: My 6th Grade daughter wants to get started but we are not sure how to. She doesn't think the balloon ...
  A: The baloon method does work reasonably well but I have a process that uses water displacement. Take ...
chemestry & biology9/7/2007
  Q: What are the 4 elements that make up most living things? Do you know the 3 classes of biological ...
  A: most living things are mostly made of water (H20), carbon and calcium or silica. (plants and animals ...
psychology9/6/2007
  Q: What is the cause of axiety from the behavioral, psychoanalytic, Biolgical, and cognitive ...
  A: I am not qualified to answer this question. But, axiety can be caused by several things both real, ...
project9/3/2007
  Q: I need to have a bibliography information on my project Can and egg withstand a greater force from ...
  A: I would recommend that you go to www.google.com and put in "eggshell strength" and take a look at ...
light switch8/28/2007
  Q: when was the light switch invented. when did it change from the push button kind to the switch we ...
  A: The push button switches were first used around 1924 with the electrification of houses and other ...
Solar Cooker8/27/2007
  Q: what is a method to measure the amount of energy a solar cooker consumes and produces? ( I was ...
  A: The amount of solar energy which falls on the Earth is well known. It can be found in wikipedia in ...
science8/23/2007
  Q: how do you think theorest different from facts?
  A: A theory looks at information, facts and assumptions as well as concepts and formulates a question ...
freezing water in different containers8/20/2007
  Q: I would like to know if the shape of a container has a positive/negative effect on freezing water ...
  A: A slanted wall, provides more surface area. Not much but enough to make a difference. It also makes ...
freezing water in different containers8/20/2007
  Q: I would like to know if the shape of a container has a positive/negative effect on freezing water ...
  A: Several key important issues when freezing water: 1) material the container is made of (how ...
saltwater/freshwater7/26/2007
  Q: How do bodies of saltwater and freshwater not mix when all of the worlds water is supposed to be ...
  A: The Oceans are salt water. Most lakes and rivers are essentially fresh water. There are a few lakes ...
Geo-Technical Engineer7/17/2007
  Q: Please tell me: What is a Geo-Technical Engineering? What does a Geo-Technical ...
  A: Sanker, This comes from Wikipedia. HOpe it helps: Geotechnical engineering is the branch of civil ...
Corrosion??6/25/2007
  Q: what is corrosion? ANSWER: Hi Izzy, A very good question. Corrosion is in general the oxidization ...
  A: Its not the water itself but the disolved oygen in the water that reacts to the iron and causes the ...
science with my son6/25/2007
  Q: how can we light a lightbulb using a wire and battery?
  A: That depends on the lightbulb. If it is a flash light bulb, NO PROBLEM but not so with a house hold ...
Corrosion??6/25/2007
  Q: what is corrosion?
  A: A very good question. Corrosion is in general the oxidization by chemical reaction of a clean metal ...
ligt bulb with alternative power source6/15/2007
  Q: I'm Keegan! I really need to know how I can make a light bulb using another power source besides ...
  A: You will need the following items: 1) Piece of Copper (can use a penny) 2) piece of Zinc ( can get ...
ligt bulb with alternative power source6/14/2007
  Q: I'm Keegan! I really need to know how I can make a light bulb using another power source besides ...
  A: That depends on what kind of light bulb it is. If it is a flash light bulb, then you can use a ...
chemistry6/14/2007
  Q: what is the role of chemistry to society and industry?
  A: Chemistry plays a very important role in our lives and is a key industry on a global scale. With ...
chromatography6/13/2007
  Q: what is the reason why police use chromatography can I have a full reason
  A: The police use many different forensic tests including Chromatography. This test allows the ...
e;ectroplating quarters with copper6/5/2007
  Q: My 4th grader is doing a project electroplating quarters. We set it all up last night with ...
  A: Are you using the Blue Windex? When you read the lable make sure that it contains Copper Sulfide. ...
help!6/5/2007
  Q: Heyya, In D&T (design and technogly) my class and i have to build a house. What can i use as walls. ...
  A: There are many materials you can use but I built a house using bales of straw with a friend of mine. ...
space6/2/2007
  Q: what is the largest item in space
  A: Not an easy question to answer. It depends on what part of space, if you are talking about a man ...
Science5/19/2007
  Q: Why does our taste buds change? I use to like carrots but now I don't.
  A: Taste Buds change every 5 to 7 years and during these tansitional periods (lasting up to 6 months) ...
science5/16/2007
  Q: please can you tell me what is the noisiest invertebrate in the world?
  A: There are several insects which make a lot of noise like the Cicada which can be heard for quite a ...
burglar alarm5/16/2007
  Q: I recently read a book with my 4th grade students in which the main character builds a burglar alarm ...
  A: Go to Radio Shack and get a double D cell battery holder with wire leads. Then get a buzzer ( they ...
burglar alarm5/16/2007
  Q: I recently read a book with my 4th grade students in which the main character builds a burglar alarm ...
  A: Here are some ideas: 1) fill tin cans or soda cans with small pebbles which are then attached by ...
Science Fair5/15/2007
  Q: My son's SS teacher is in charge of this school wide Science Fair Project. He had to determine which ...
  A: Not much time t o do this in Stephanie, Using the computer, you can write the verious items ...
CHEMISTRY FOR KIDS5/13/2007
  Q: the question was that we have to desgin a book for kids between the ages of 8-12 about THE GAS LAWS ...
  A: If you go to www.google.com and put in "Gas Laws" and click, a whole list of information comes up. ...
Dome Mountians5/7/2007
  Q: My daughter has to do a project where she has to make a Dome Mountian and i cant find any ...
  A: There are several famous Dome Mountians, Ayers Rock, Australia Dome Mountian, Georgia, USA 1/2 ...
Water5/6/2007
  Q: What is it made of? and How does rain fall?
  A: Water is made of 2 molecules of Hydrogen written as H2 and one molecule of Oxygen written as "O". ...
eco system aquatic5/4/2007
  Q: 1.an engrey flow involving plants and animals 2.clear water has low mmeasurement of this ...
  A: 1 the energy flow between plants and animals is that the plants grow and get energy from the sun. ...
water tension5/3/2007
  Q: why does detergent effect water tension ANSWER: Hi James. Well the most important thing to remember ...
  A: I have never done the experiment. Sounds like a good one for you to try and then let me know how it ...
water tension5/3/2007
  Q: why does detergent effect water tension
  A: Well the most important thing to remember is that it is nolonger pure water, it is now a solution of ...
cooked fish balls4/29/2007
  Q: why do cooked fish balls float on water
  A: A raw fish ball (depending on what is put into it) contains fish oil which is heavier then water ...
VERY IMPORTANT! PLEASE HELP!!4/25/2007
  Q: i was searching the internet because me and my friend are doing a science fair project on ...
  A: This may be a bit advanced for you but you could learn a lot from the process. What concerns me are ...
Science fair project4/24/2007
  Q: After completing her experiment, my niece now has to write a research paper based on her experiment. ...
  A: I am familiar with this experiment but I need to know some particulars: 1) Was it a metal skewer? ...
science fair project for 2nd grade4/18/2007
  Q: Help with a prject about porisity in rocks
  A: You need help with the Porosity of Rocks? Can you tell me what kind of rocks you plan to use and ...
science fair popcorn project4/14/2007
  Q: Quick question, my project is which popcorn pops best, counting how many kernels are left.. what ...
  A: For a 4th grader, as long as you want. But be sure to "cite your references". In other words, if ...
science fair popcorn project4/14/2007
  Q: Quick question, my project is which popcorn pops best, counting how many kernels are left.. what ...
  A: You should find out how many kernels are used in a typical bag of microwave popcorn of different ...
Science Fair4/12/2007
  Q: I would like to see which type of drink will spray the farthest when shaken. Would this be testing ...
  A: Yes, it will depend on the amount of carbonation. But it is the experimental set up which may be ...
grade 8 science fair project4/11/2007
  Q: Do you have any information on building a boat navigation lock for a school project. A boat must ...
  A: You will need 2 pcs of plexiglass, wooden board (long enough to hold the whole project), a small ...
science project4/10/2007
  Q: Can you give me a idea on what invention a 9 year old can make for his science project?
  A: David, He can invent a machine to put a pen in a cup. A kind of Rube Goldberg kind of machine. A ...
3rd Grade invention4/10/2007
  Q: Ralph, Can you suggest any inventions for our 3rd grade that are Easy? The invention must include ...
  A: These are always a bit tricky. But a "rube Goldberg" kind of machine is usually the best. Using a ...
Gas4/9/2007
  Q: What happens to particles when there is in an increase of temperature of gas?
  A: As the temperature goes up, the gas molecules become more excited and this generally causes the ...
Can you help me????4/7/2007
  Q: Ummm...Hi I'm in 7th grade and I really need help on my science prodject. You see I used an egg to ...
  A: I hope that you will get this in time, I have been out of town with out computer access for a week. ...
science expo4/2/2007
  Q: please explain how eggshels are very similar in composition to teeth enamel
  A: Egg shell and tooth enamel are made of nearly the same stuff, Calcium Carbonate. Just like sea ...
ice melting in coke and water3/29/2007
  Q: I am doing a science fair project on what ice melts faster in, coke or water. In my experiments the ...
  A: I will make the assumption that the temperature of the two liquids are identical and that the ...
my daughter needs an invention idea3/28/2007
  Q: my daughter is in 3rd grade and needs a really good invention idea that is simple to make.
  A: How about a solar powered hat fan? Or a drink cooler using a double walled system where between the ...
question3/28/2007
  Q: what will float on water but sink threw the oil and just float in the middle?(of our mixture of oil ...
  A: There are many things which float on water, like most wood species and as you have discovered, oil. ...
Relation of sugar and CO2 levels in soda3/25/2007
  Q: My 4th grader is doing a science fair project involving detecting CO2 levels in a variety of sodas. ...
  A: Sugar levels and CO2 levels are not related to each other. Different companies and soda flavors ...
Science Project..3/24/2007
  Q: What type of grass reduces erosion the best? and what is the defintions of Independent Variable and ...
  A: Most grasses do a good job of reducing erosion but the better ones send out rysomes (underground ...
science fair project3/22/2007
  Q: can you give me some tips or ideas on how to build a burglar alarm
  A: Do you want this to be an electronic burglar alarm, or something less technical or down right ...
invertebrates3/21/2007
  Q: how do invertebrates squirm fast if they don't have bones. if available my i have references for ...
  A: That depends on the invertebrate. Insects for instance have exoskeletons which allows them to move ...
infection control3/21/2007
  Q: how does urine carry and spread infection ANSWER: Hi Marie, Typically no unless the person has a ...
  A: Blood carries all kinds of stuff from white blood cells which battle with infections to the ...
infection control3/20/2007
  Q: how does urine carry and spread infection
  A: Typically no unless the person has a UTI or urinary tract infection. In such cases, some of the ...
5th grade science fair project3/19/2007
  Q: My daughter is testing which whitening toothpaste works the best. We cannot fing a good substance ...
  A: Contact your local Dentists and ask them to put you in touch with the folks that make dentures. ...
plant growth3/18/2007
  Q: I'm doing a science project on which plant will grow better using cola, diet Pepsi, Gatorade, Mt. ...
  A: Yes, sugar can be used as a kind of poor quality fertilizer. It does not carry enough nutriants to ...
egg dorp3/18/2007
  Q: how do i drop an egg from 10 feet by using an apparatus that i have to build?
  A: This is a classic build to protect the egg experiment. This year my son used straws to construct a ...
plant growth3/18/2007
  Q: I'm doing a science project on which plant will grow better using cola, diet Pepsi, Gatorade, Mt. ...
  A: Yes. However, too much of a good this can be bad. To much sugar will kill the plants too. The ...
plant growth3/17/2007
  Q: I'm doing a science project on which plant will grow better using cola, diet Pepsi, Gatorade, Mt. ...
  A: Most of these contain either acids or salts. In the case of the carbonated drinks these contain ...
science fair porject3/17/2007
  Q: My name is Melanie. I am in 4th grade. I have a science fair project this April 11. I am required to ...
  A: Do you like to grow plants? or how about turning a dime to look like it is made of copper? How ...
Watt Volts?3/17/2007
  Q: Dial up modem -- 500mA Video card -- 2A Hard disc -- 750mA DVD drive -- 2.5A The rest of the comp -- ...
  A: You are asking about Ohm's Laws. volts = current in amps x resistance in ohms volts = power in ...
solids,liquids,and gases3/13/2007
  Q: What are two examples of a solid,liquid,and a gas?
  A: 1) Ice, water and steam (H20) 2)Dry Ice, Liquid CO2 and CO2 gas. There are millions of solids ...
Soda Carbonation3/11/2007
  Q: My daughter in the 4th grade has a science project. Wants to know if the ingredients in soda have ...
  A: I'm not sure that this experiment will show what you hope. The biggest issue is the amount of CO2 ...
Karyotypes3/11/2007
  Q: With all due respect,are you sure you read my question correctly? Which would a Karyotyping be ...
  A: Donald, I stand corrected. I did misread your question. I appologise. Down's as with Turner's ...
magnets as conductors3/7/2007
  Q: When testing conductors of electricity, we noticed that even though magnets are metal they are not ...
  A: Electricity and magentism are like first cousins. You can make something magnetic using electricity ...
Dry like nail polish3/3/2007
  Q: Is there anything tasty or flavored that you can put on your nails that dry like nail polish?
  A: There are some novety products that are like lollipop candy that can be put on nails. It takes ...
How do you string egg shells so they won't break?3/2/2007
  Q: I am trying to suspend eggshells in different solutions to see how they are affected but I am having ...
  A: Sounds like an interesting experiment. There are several ways to do this. You can hard boil the ...
science2/28/2007
  Q: if a farmer did not plant corn one year which organism in the food web above would be most affected?
  A: There are a lot of variables to take into consideration. First is the farm itself. Are there a lot ...
daddy long legs2/18/2007
  Q: My teacher says daddy long legs are not spiders because they only have six legs and one body part. ...
  A: There are two types of "daddy long legs" Both belong to the Arachnids group both have eight legs and ...
Science Project experiment - density2/9/2007
  Q: My Son is doing a science experiment about density. The experiment goes as follows: 1)Fill an ...
  A: McClain, Density is one of those strange subjects which sometimes throws people for a loop. Take ...
Science Fair2/8/2007
  Q: I have a Science Fair project coming up, and I was thinking of doing something with Bacteria (agar) ...
  A: Doing a project with bacteria is quite advanced. If you are a high school student with an intent to ...
science2/1/2007
  Q: what is the relationship between weight and gravity?
  A: THere is a direct relationship. What is 1 pound on the Earth is 1/6 of a pound on the Moon because ...
cells2/1/2007
  Q: Can cells grow in poison?
  A: It depends on the type of cells, the poison and the environment in which this is taking place. ...
batteries /lightbulb1/27/2007
  Q: The imformation on how to light a lightbulb with soda was very helpful.I also have a question for a ...
  A: Yes you can light a light bulb with a battery. IT depends of course on the type of light bulb and ...
Science fair projects1/26/2007
  Q: my kid has to do a project and she is in fifth grade didn't even come up with an idea yet i've ...
  A: I have lots of ideas for science fair projects. What does you child like? Plants, chemistry, ...
Heating Elements1/25/2007
  Q: Is it possible to use batteries to heat an element in order to boil water? If yes, what element ...
  A: Juane, There are battery powered heating elements used for this purpose. Typically however, these ...
Alka-seltzer1/20/2007
  Q: Not to be rude or anything I am a ms. And I'm trying to win a science fair. I want my experiment not ...
  A: Sorry Ms. Potato. AS is Alka-Seltzer. As since you are in 7th grade, I admire your drive and ...
what freezes quicker1/19/2007
  Q: i what to know what freezes quicker saltwater or sugarwater this is for a six grade science fair
  A: Sher'micheal If this is for a science fair, then you need to do the experiment!! But I can give you ...
I have a Question1/18/2007
  Q: Does ice melt faster in air or water?
  A: Faviola, There are a lot of factors which impact the melting of ice. In the air, if the relative ...
science fair- catapaults1/18/2007
  Q: Is the winch the source of a catapaults power?
  A: The source of power for most catapaults is the heavy weight and "falling" as a result of gravity. ...
Marble Clock Project1/16/2007
  Q: How do you make this project? The school gave us items to use , masking tape, newspaper ane a ...
  A: A place to some research on the web is "rolling ball devices". If you go to www.google.com and put ...
marble clock science fair project1/16/2007
  Q: My son was given a project to do on building a marble clock. He can only use newspaper, masking tape ...
  A: As a child, I had a toy made in Germany which used a marble and it rolled down a zig zag track ...
marble clock science fair project1/15/2007
  Q: My son was given a project to do on building a marble clock. He can only use newspaper, masking tape ...
  A: Mr. James, Holy Smokes!! Does it need to keep time with any accuracy? The way to do this is with ...
science project1/15/2007
  Q: my fourth grader is doing a project on which evaporates faster- pure tap water or salt water. Where ...
  A: First of all, tap water is far from "pure", for that you need to buy distilled water like you might ...
Stain removal1/12/2007
  Q: I have another question for you. You told me in the last answer how Oxyclean gets rid of stains. ...
  A: Clorox or other kinds of bleach uses Chorine in stead of Oxygen and like Oxygen from Oxyclean, ...
Science Fair1/11/2007
  Q: I have a science fair project coming up, and I was wondering if you knew of any good ideas to do ...
  A: Plants are easier to deal with then fish and the results are easier to explain. You can grow them ...
Stain removal1/9/2007
  Q: How do stain removers work to remove stains. I need to know how they literally are removed at ...
  A: It depends on the stain remover. Many use specific enzymes which "eat" proteins and break them down ...
soda top1/4/2007
  Q: the blue piece under the lid of a twist top soda, if you remove it does the soda go flat faster? if ...
  A: That simple plastic disc is the "secondary seal" for the bottle. Once the bottle is opened, this ...
Solids, Liquids, Gases1/1/2007
  Q: How does sound travel through solids liquids and gases?
  A: Sound comes in the form of "waves". So when a sound is made, it can travel through many forms of ...
Question regarding egg drop1/1/2007
  Q: My name is Zain. In my Science class, we have to make an egg dropping device. This device will hold ...
  A: find some closed cell foam like the kind used to make temperpedic matraces. You can actually get ...
gravity12/31/2006
  Q: how does weight of an objects affects its gravitational pull towards the earth? Can you explain this ...
  A: This is out side of my area of expertise and very much in the area of physics. I don't know of any ...
What are ...12/30/2006
  Q: i'm doing a project at school to do with Micro-organisms, and i need to no about them for a home ...
  A: There are many types of micro-organisms from bacteria to multi-cellular plants and animals. They ...
Chemistry12/26/2006
  Q: Well. Could you tell me about the other two and describe the methods?How do you measure soda ...
  A: 1) Take a length of plastic tubing (like the kind used in fish tanks) and using the lid from a used ...
Chemistry12/26/2006
  Q: How do you measure soda carbonation using household products? I don't understand your previous ...
  A: There are several ways to measure carbonation in soda. One takes some engineering so that you can ...
projects12/15/2006
  Q: were do I find balloons and carbonation as a project
  A: Sounds like you are on your way to develop the project on your own. I'm not sure if there is any ...
Life Chemistry And The Life Of Cells12/13/2006
  Q: Hey I’m doing home school and I’m having some problems with my work. Can you help me check my ...
  A: Most of your answers are correct. I will make suggestions on those that are not. Also there are ...
germs12/7/2006
  Q: Can germs (i.e. cold germs) get germs?
  A: Germs come in two primary types: 1) Bacterium and 2) Virusus. Bacterium are a living self ...
carbonation in soda.12/4/2006
  Q: How can you determine the carbonation in soda? How do you measure it?
  A: Most kinds of soda are "saturated" with Carbonation (CO2). This is done at the plant just before ...
source12/4/2006
  Q: In a science project, what is the source?
  A: The source is the background information for the test you plan to do. This would be the research ...
science for grade 112/1/2006
  Q: I need to find 3 projects for my sister and i cant find 1 more so does anybody know of any good ...
  A: 1) Diet Soda with Mentos, rock salt, sugar, Splenda. See which one produces a bigger fountian of ...
I need help.11/28/2006
  Q: Which brand of soda has the most carbonation?
  A: Most sodas have the same amount of carbonation. They are saturated to the point where no more CO2 ...
magnets11/26/2006
  Q: How do you do magnetic experiments? Do you like magnetic experiments? Do you like physical ...
  A: I like magnetic experiments a lot. Magnetisim is one of my favorite areas of physics. If did not ...
density11/22/2006
  Q: i got to do a density report but i need more information on density could you help me ?
  A: I will try to help you but your question is very broad. First of all density is how tightly the ...
Insulating a shoebox11/20/2006
  Q: Hey, In school, I am doing a project to insulate a shoebox with two uncovered windows 5L X 2W. I am ...
  A: I'm sorry it took me a while to answer, I've been out of town. Styrofoam is the best stuff to use ...
Boiling water11/4/2006
  Q: in my high school science class, we have a group project to boil water without fire. To produce ...
  A: there are several ways to boil water. Using a Solar oven, heating rocks on a fire and then placing ...
How can I insulate a model house.11/1/2006
  Q: In my science class we have to make a model house and insulate it. we also have to show if it does ...
  A: You can demonstrate this several ways. Using a small 40 watt light bulb as a heat source inside of ...
Carbon cycle10/31/2006
  Q: For a school science assignment our class has to explain the carbon cycle. But I just don't get it!! ...
  A: The Carbon Cycle is the biochemical process by which carbon is exchanged between the atmosphere, ...
Measuring Carbonation Using Everyday Household Products10/26/2006
  Q: How do you measure soda carbonation using everyday household products?
  A: Using a large mixing bowl and a measuring cup, a length of fish tank tubing and silly putty. Fill ...
SCIENCE PROJECT10/26/2006
  Q: WHICH FREEZE FASTER? SUGAR WATER, SALT WATER OR PLAIN WATER WHICH WEB SITE CAN I USED TO DO MY ...
  A: I noticed that you scored my answer with a 7 for knowledge and 7 for clarity. This is a science ...
carbonation10/25/2006
  Q: i need some major previously found info carbonation in club soda for a review of the literature. do ...
  A: Carbonation in most sodas are very similar in terms of volume. This is because the water containing ...
MAGNETS10/14/2006
  Q: What are Magnets? What are some good magnets experiments which can be done at home? I am Eight ...
  A: Magnets are generally made out of iron or a combination of iron, niobium and other metals which can ...
egg drop experiment10/14/2006
  Q: I need some complex answers cus it looks kule for an assignmant there are no limits to my materials ...
  A: 30 x 30 x 60 what? mm? inches? feet? You can use nearly any material for an egg drop. I used ...
Carbonation in Soda10/11/2006
  Q: I need a really detailed way of testing carbonation in soda. Can you please help?
  A: I'm not sure what you mean by testing carbonation in soda. Do you mean how much is in soda? That ...
sceince fair10/10/2006
  Q: ok, what makes nail polish dry so hard, what type of ingrediant is in it???????????
  A: There are several polymers (kinds of plastics) in nail polish. These plastics dry very hard (like ...
carbonation10/6/2006
  Q: i saw the measuring of carbonation answer, how do you know how much carbonation is in there? how ...
  A: Well I can't email you with out your email address. But that's ok. There are several ways to ...
goldfish behaviour10/3/2006
  Q: I have 4 goldfish in a 2ft. fishtank. In the last 24 hours one of the larger fish has been chasing ...
  A: Sounds like a problem of territoriality. The one doing the chasing may be going after another male ...
hamster power10/3/2006
  Q: is it possible for all electric power to be replaced by all of the earths domestic hamsters?
  A: One would think so given the time they spend in their excercise wheels. But, unfortunately, no. ...
science10/3/2006
  Q: friction is a force that slows things that are moving horizontally on the ground.What are some ...
  A: Not only horizontally but vertically and every other way. The only place you don't find friction is ...
Making smoke with chemicals10/3/2006
  Q: Good Morning! I have a 7 year old son who has a extreme interest in science, and I'm trying to keep ...
  A: Yes, it is the same stuff and should work in the same way. Since I don't know where you live, I ...
Making smoke with chemicals10/2/2006
  Q: Good Morning! I have a 7 year old son who has a extreme interest in science, and I'm trying to keep ...
  A: Muriatic acit and ammonia will produce a rather noxious smoke which will be rather unpleasent for ...
mineral volume in rocks vs. powder9/29/2006
  Q: I really appreciate it. I'll try it with the scale. I wonder if there is air inside the rock. i'm ...
  A: I"m not sure why you need money but remember, since you know that it is fools gold (Pyrite), it ...
mineral volume in rocks vs. powder9/29/2006
  Q: I'm 7yrs old. I've been grinding up fool's gold rocks to dust and i'm noticing that such a small ...
  A: It depends on how you are grinding it up. It could be that if you are using a grinding stone on a ...
INVENTION CONVENTION:HELP!!!!!!9/28/2006
  Q: !! i'm really intrested in the last idea u gave me and the 2nd one sounds reallyyyyy cool!!! I like ...
  A: Glad I could help. On the first idea, you can use flip flops and using the same kind of foam cut ...
science9/27/2006
  Q: what is matter is?
  A: A very good question. What is Matter. Matter is any substance from the bark of a tree to water to ...
INVENTION CONVENTION:HELP!!!!!!9/27/2006
  Q: I'm a 7th grader in chicago illinois.This year it is PERMITTED that we enter the Invention ...
  A: How about an automated "toe jam" removal device? This would look kind of like a flip flop sandle ...
nailpolish ingredients9/25/2006
  Q: i need to find out for an experiment the different ingredients in nailpolishes and how it influences ...
  A: This will be difficult since most of the manufacturers are rather mum about their ingrediants. ...
antacid & pain reliever effervescent tablets9/24/2006
  Q: My 8 year old son wants to demonstrate adding water to pain relieving effervescent tablets at a ...
  A: The reaction that you see when the gas is expelled during the process is CO2 or Carbon Dixoide. ...
mass9/24/2006
  Q: My 10 year olds science home work, help needed. If 150g of sugar is dissolved in 100cm3 of water ...
  A: 1cm3 = 1 gram (g) of water; Thus 100cm3 = 100g of water (100cm3=100ml) 150g(sugar) + 100g(water) ...
matter9/22/2006
  Q: How do matter and carbonation relate?
  A: Carbonation is simply the Carbon Dioxide Gas which has been forcably disolved in soft drinks like ...
science - electricity9/21/2006
  Q: please, can any one suggest me a really intersting science project related to electricity about ...
  A: How about doing a project where you electroplate copper onto another metalic item? It is fairly ...
science9/20/2006
  Q: how weather effects food?
  A: Weather can effect food but it greatly depends on the type of food and the type of weather. So, ...
The ocean9/14/2006
  Q: how does the ocean create rainfall i.e. fresh water?Why do WE need the ocean? Answer - Hi ...
  A: Excellent question. The oceans being very large bodies of water exposed to the heat of the sun, ...
The ocean9/13/2006
  Q: Why do WE need the ocean?
  A: Why do we need the oceans? With out the oceans, our atmosphere would have much more carbon dioxide ...
egg drop9/7/2006
  Q: my partner and i have to build an egg dropping device. our materials are limited to wood (with a ...
  A: To keep your egg from becoming egg drop soup, try to build a lattice work of wood around it so that ...
phosphorus8/9/2006
  Q: How was phosphorus discovered what is something interesting about phosphorus
  A: Phosphorus is a rather interesting element and is esential to life. It is found in all living ...
bubble stuff8/1/2006
  Q: Since you are a science fair judge, you may be able to help me. I work in a preschool setting. I ...
  A: It may be the amount of soap in the water. I know that the soap solution used in the big bubble ...
organic chemistry8/1/2006
  Q: how do apples going brown have anything to with organic chemistry and if so what topic would it ...
  A: I will make an assupmtion here that the apple has been cut in half and is now exposed to the air. ...
Dinosaurs6/22/2006
  Q: How do they...the expert knew that theyu lived 65million years ago?and how do they knew that when ...
  A: Au Yu Guo, The dinosaurs died out about 65 million years ago as a result of an ELE (Extinction ...
carbon cycle;nitrogen cycle;phosphorus cycle6/19/2006
  Q: the above cycles;carbon,nitrogen,phosphorus all illustrate which of the following? law of ...
  A: Matthew, All of the cycles you are looking for can be found on the internet including good ...
resources6/17/2006
  Q: of the following, the example that illustrates the reuse of a resource is? making swing out of old ...
  A: The reuse of resources is simply stated as recycled material. The tire swing uses an old tire and ...
raft building made easy6/14/2006
  Q: please could you tell me in a very easy way on how to build a ten person raft for a raft race please
  A: A ten person raft needs to be very stable since people move around. Also depending on the nature of ...
resource6/10/2006
  Q: which one of these is the example that illustrates the reuse of a resource? making a swing from an ...
  A: Making a tire swing, making a car engine from cans, and using glass for road pavement are all ...
Golfish colour and behaviour changes due to background colour change6/8/2006
  Q: My friend and I are doing an assignment in Year: 11 Biology. We are looking at colour change and ...
  A: You have an interesting idea for an experiment. I'm not sure that gold fish are the best choice. I ...
thermoses6/1/2006
  Q: Is bubblewrap good to use in an thermos?
  A: Bubble wrap is a very good insulator and behaves like a thermos in some ways. I'm not sure what you ...
necessary organism environment5/23/2006
  Q: What two environments do every living organism survive in? I am a fifth grade student who needs to ...
  A: This one takes a some thought. All organisms need food and an environment condusive to ...
Forensic Science5/10/2006
  Q: However, if I may get yr help, the question is, what kind of forensic tests can be used to confirm ...
  A: Among the tests that could be done: 1) a paper litmus which looks at the amount of acid/base in the ...
Forensic Science5/9/2006
  Q: The question is related to a homework project concerning investigation. My case is to do with Mr ...
  A: First of all, a pen and ink drawing could and very easily my have been signed in pencil. I would ...
anti5/9/2006
&nbs