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Science for Kids/Questions
| Subject | Date Asked | Expert |
| Science | 2/8/2012 | Sue Kayton |
| Q: This is my topic for my science fair project: "Do all objects fall to the ground at the same speed?' ... A: The dependent variable (the output that you measure) is the speed of the falling object, or how long ... | ||
| natural science | 1/28/2012 | Robert lee |
| Q: I am in grade 7. I have a science project,we need to make a model based on any theme on natural ... A: Here is a quick simple experiment you can do at home or school, sharpen some pencils and push them ... | ||
| stains | 1/24/2012 | walter hintz |
| Q: I have a science experiment and its about seeing stains under a black light. I wanted to know if you ... A: If you have completed the experiment already you already know the answers to your first question. As ... | ||
| stains | 1/23/2012 | walter hintz |
| Q: I have a science experiment and its about seeing stains under a black light. I wanted to know if you ... A: I do not know what kind of a stain you are studying. Also you are asking me for the results of an ... | ||
| Grade 9 Biology | 1/21/2012 | Robert lee |
| Q: what's the difference between a dependant variable and a independent variable? Can you please add an ... A: a variable is basically anything you wish to measure in some way,an independent variable is a ... | ||
| Earth's magnetic field | 1/20/2012 | Ralph Salier-Hellendag |
| Q: If you were to take a metal object to Earth's magnetic poles, how would the magnetic field affect ... A: This is a great question. The Earth's magnetic poles are not like a bar magnet but very similar on ... | ||
| Physics | 1/18/2012 | Ralph Salier-Hellendag |
| Q: Can you please help me find a do-at-home experiment for the topic of torque, for I have not yet ... A: Torque is is the tendency of a force to rotate an object about an axis,[1] fulcrum, or pivot. Just ... | ||
| chromatography | 1/15/2012 | Robert lee |
| Q: what solvent would you use if x and y were water base paints and the other on was what solvent would ... A: I have little knowledge academically on the subject but as a past painter of houses I can tell you ... | ||
| Physics | 1/12/2012 | Ralph Salier-Hellendag |
| Q: .!! I am Shruti from India. I am in seventh standard and I am supposed to make a simple electric ... A: The easiest model to make is an electro-magnet. For this you will need a battery, a nail made of ... | ||
| Air molecules | 1/12/2012 | Robert lee |
| Q: What does air molecules mean A: generally when we say "Air" we are speaking of oxygen and when we say molecule we generally mean a ... | ||
| physics | 1/11/2012 | Ralph Salier-Hellendag |
| Q: my daughter is doing science fair project on "balloon powered rocket car" i would like to know if ... A: Are you helping your daughter to do the project or are you doing it for her? Have your daughter ... | ||
| physics | 1/11/2012 | Ralph Salier-Hellendag |
| Q: I am doing my science fair project on "skewer through a balloon" I chose my problem to be :Does ... A: would you please send me your teacher's email address. Oh, Don't worry, I won't say any thing but I ... | ||
| Ice Thaw | 1/9/2012 | Robert lee |
| Q: How does the size of a block of ice affect the rate of thaw? For instance, does a very large block ... A: Absolutely, a large mass of ice does tend to do this, partially by changing the temperature of the ... | ||
| c60 molecule | 1/9/2012 | Ralph Salier-Hellendag |
| Q: I have a very confusing chemistry project. I must build a 3D structure of c60 molecule. I need some ... A: C-60 is a form of Carbon also called the "buckyball". Take a look at the web site below for more ... | ||
| science chemistry | 1/6/2012 | Ralph Salier-Hellendag |
| Q: i am doing a science project on which stain remover works better. i dot know any ingriediants A: Each stain remover has similar ingredients. Some have enzymes while others have strong oxidizers. ... | ||
| iv and dv | 1/5/2012 | Sue Kayton |
| Q: i was woundering if u could tell me if salt would be a dependant variable or and independant ... A: It depends on what you are measuring. If the experiment is to see how much salt will dissolve in ... | ||
| Toy Car Wheels | 1/3/2012 | Robert lee |
| Q: How does the size of a toy cars wheels affect its distance? A: As a cars wheels rotate distance is advanced due to the circumference of the tire or wheel, the ... | ||
| science exhibition | 12/19/2011 | Ralph Salier-Hellendag |
| Q: sir, i am having an exhibition in my school and i need a working model based on the subject ... A: Since I do not know what you have access to here are several ideas: an electro-magnet using a nail ... | ||
| Chemistry | 12/16/2011 | Ralph Salier-Hellendag |
| Q: What happens if there is an incomplete reaction between zinc and sulfuric acid? and by is the ... A: Your question is a bit confusing but in an incomplete reaction, some of the Zinc is left over while ... | ||
| Optical Illusions | 12/10/2011 | Ralph Salier-Hellendag |
| Q: I am doing a science fair project and my topic is on optical illusions. Would you happen to know if ... A: Optical illusions are not really differentiated between male and female observers. It is a factor ... | ||
| What to write in journal? | 12/6/2011 | Ralph Salier-Hellendag |
| Q: I am doing the experiment on the skewers inserted into the balloons. I am not sure exactly what to ... A: A journal is used to write down your observations and process. So an example might look like this: ... | ||
| Taste Testing | 11/29/2011 | MGR |
| Q: I have a science fair project that I am doing for school and I am very confused. For my project I ... A: Is your question "Does age affect whether or not a person likes original food products of healthy ... | ||
| Science fair project 4th gd level, due 12/01/11 | 11/29/2011 | Ralph Salier-Hellendag |
| Q: how can my son Chris know If sound travels best through SOlids, liquids or gases? we only got ... A: You will need a tuning fork. These are available from most music stores. Then you need a tuner ... | ||
| Electromagnetism | 11/23/2011 | Ralph Salier-Hellendag |
| Q: Any easy woking model on electromagnetism which can be completed in 3 days for science project for ... A: I think you need to do a better job of planning your time! You can make an electro-magnet. This ... | ||
| physics model | 11/16/2011 | Ralph Salier-Hellendag |
| Q: sir, i urgently have to submit my physics model, iam in 11th class, so can you please suggest me a ... A: You need to practice better time management. This is especially true if you are planning to go to ... | ||
| leaf color | 11/14/2011 | Ralph Salier-Hellendag |
| Q: please explain why leaves change color in the fall, and what colors can leaves be other than red, ... A: The green in leaves is because of chlorophyll in the leaves of the plant. Chlorophyll is what helps ... | ||
| science fair prodjuct. Voltage Meter | 11/11/2011 | Ralph Salier-Hellendag |
| Q: I am doing a science fair product and I'm in 5th grade but i need help with using a voltage meter ... A: Fruits and Vegies are not electrically charged but they do contain "electrolytes" which allows ... | ||
| biosphere transport | 11/10/2011 | Sue Kayton |
| Q: Hey, I am in year 7/7Th grade and i have been given this task to write an explanation ans then later ... A: 1. Right now, the only way people can be transported to Mars is using a chemically-propelled ... | ||
| Help with Chemistry | 11/9/2011 | Ralph Salier-Hellendag |
| Q: I am a senior in an advanced Chemistry class. We are in the process of doing individual planning ... A: The problem will be all of the other stuff in the brine including spices and other potential ... | ||
| science fair project re: milk fat | 11/1/2011 | Ralph Salier-Hellendag |
| Q: we are conducting a 4th grade science fair project and trying to determine if the percentage of milk ... A: You have several problems with this experiment. First of all, the milk you are using is ... | ||
| milk fat's affect on spoilage | 11/1/2011 | Sue Kayton |
| Q: we are conducting a 4th grade science fair project and trying to determine if the percentage of milk ... A: Use different kinds of milk whole milk (4%) lowfat milk (2%) skim milk (0%) Compare spoilage rates ... | ||
| Science Fair Project on Stains | 10/29/2011 | Ralph Salier-Hellendag |
| Q: Why is coffee said to be staining? What is in it that makes it staining? Why is grape juice said to ... A: The liquids you have mentioned all have solids suspended in the liquid. That is what gives these ... | ||
| Science Fair | 10/29/2011 | Ralph Salier-Hellendag |
| Q: Do you think this is a winning science fair topic/Which Brand of Carpet is Most “Stain Resistant”? ... A: You will need to find out what the different carpet companies do to protect their carpet products. ... | ||
| science | 10/24/2011 | Ralph Salier-Hellendag |
| Q: 1. why does the glass break up when the water freeze. how does it relate to the theory of kinetics ... A: As far as electricity is concerned, when a bird lands on a wire, it is usually just one. But if ... | ||
| Science Fair project | 10/17/2011 | Ralph Salier-Hellendag |
| Q: I am working on a science fair project which compares solar power, hydro power and wind power. I am ... A: They can't really be compared since they function very differently and use different "power" ... | ||
| Science Project making | 10/12/2011 | Sue Kayton |
| Q: Sir, My name is Sudeep and I study in 9th standard. I have a project based on Physics. Can you ... A: If you can find the parts, build a small electric motor, or a small electric generator. You will ... | ||
| science | 10/5/2011 | Ralph Salier-Hellendag |
| Q: 1. why does the glass break up when the water freeze. how does it relate to the theory of kinetics ... A: Water expands when it freezes. Thus when you put water into a glass container that does not permit ... | ||
| Why does chewing gum have a flavor? | 10/2/2011 | Sue Kayton |
| Q: We are working on the background research and can't find the answer to our question! here's thewhy ... A: Chewing gum originally was the unflavored sap of the chicle tree. It had no flavor. Chicle is a ... | ||
| want a nice science working model | 9/30/2011 | Sue Kayton |
| Q: i really want a nice working model for science fair. please help. i want a model of high standards. A: Depending on your age, availability of parts, there are many models you can build. Here are some ... | ||
| Science Fair help | 9/27/2011 | Ralph Salier-Hellendag |
| Q: I am looking for a good science fair project that involves football. My teacher said that I can't ... A: This is a tough one. But I think I have an idea for you. Does the size of a person's hand make a ... | ||
Science for Kids
Answers by Expert:
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
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