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Science for Kids/Questions
| Subject | Date Asked | Expert |
| Forensic Science | 5/9/2006 | Ralph Salier-Hellendag |
| 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 ... | ||
| anti | 5/9/2006 | Ralph Salier-Hellendag |
| Q: I hope I'm finding you in the best of health. I saw places like Crabtree&Evelyn sell antibacterial ... A: These products have a very high percentage of Methanol Alchol which is poisonous to any thing that ... | ||
| brake pads | 5/9/2006 | Ralph Salier-Hellendag |
| Q: Car brakes work as a result of pressure between two rubber brake pads on each wheel. Why do you ... A: Car brakes don't use rubber brake pads but rather a highly engineered material including bronze ... | ||
| Forensic Science | 5/9/2006 | Ralph Salier-Hellendag |
| Q: I would like to know what kind of forensic tests can be used to determine the originality of (i) an ... A: This is a little difficult to answer with out more information. First of all how old are these ... | ||
| science | 5/2/2006 | Dan Fink |
| Q: What are the five questions needed for a hypothesis? A: of which hypothesis is one of the parts: * Research * Problem * Hypothesis * ... | ||
| Question about science project on water cycle | 5/1/2006 | Ralph Salier-Hellendag |
| Q: My 1st grader is doing the following project on the water cycle, and I was wondering if I could use ... A: I understand your concern. Glass does work best because of the way it holds heat vs plastics. But ... | ||
| nutritional plants | 4/23/2006 | Ralph Salier-Hellendag |
| Q: why do humans eat certain plants A: Plants come in three varieties. 1) edible, 2) in-edible and 3)poisonous. Over the last 100+ ... | ||
| magetic project | 4/18/2006 | Dan Fink |
| Q: I am trying to come up with a new twist on a science fair project using magnets. I don't want to ... A: Full disclosure: I work for a company that sells magnets and the stuff for magnet experiments, ... | ||
| science | 4/10/2006 | Dan Fink |
| Q: what happens to sound when it hits something soft? A: When sound waves hit something soft, more of the energy in the wave is absorbed and turned into ... | ||
| sinking and floating | 4/10/2006 | Ralph Salier-Hellendag |
| Q: when a boat is floating in the water what is the name of the forces that (a)keep it on the water ... A: Among others is surface tension. But a boat floats because it is "hollow". The air inside keeps it ... | ||
| Warm breath and cool breath | 4/5/2006 | Dan Fink |
| Q: I'm 7 years old and I was wondering why is my breath warm when I breathe out with my mouth wide open ... A: What you are feeling is evaporation of the water in your saliva (spit)! It feels cool, since it's ... | ||
| Microbiology | 3/29/2006 | Ralph Salier-Hellendag |
| Q: I have a very strong background in microbiology and my 7-year-old daughter likes to help me out with ... A: It is a bit difficult given the age of your daughter. One way to test this is for you to get ... | ||
| SCIENCE PROJECT -6TH GRAD | 3/27/2006 | Dan Fink |
| Q: WHAT EFFECT DOES PLACEMENT OF WEIGHT HAVE ON AN AIRPLANE'S FLIGHT? A: Airplanes tend to rotate around their center of mass, both in pitch (nose up and down) and roll ... | ||
| salt dissolving in water | 3/27/2006 | Dan Fink |
| Q: what is the rate and amount that salt dissolves in water at different temperatures? A: It depends on a lot of different factors, so you'll have to set up an experiment and try it. Some of ... | ||
| Alt. Energy Art | 3/26/2006 | Dan Fink |
| Q: Mr. Fink, peace. I am a medicine wheel artist. Alternative energies are like prayers to me. I am ... A: It all depends on how much power you need to make, in what wind speeds. Car alternators are very ... | ||
| we are doing a project about... | 3/22/2006 | Ralph Salier-Hellendag |
| Q: we are doing a project about plants. We would like to order a bacteria that harms plants then we ... A: This kind of experiment requires fairly rigerous controls. There are several reasons for this: 1) ... | ||
| moon and gravity | 3/22/2006 | Dan |
| Q: My question is regarding gravity on the moon and earth: What would happen if basketball players were ... A: You ask a simple question with a complex answer. I recommend asking in our physics area for an ... | ||
| egg drop | 3/21/2006 | Dan Fink |
| Q: I'm an 8th grader and have to do the egg drop. I have to use only 100 cm masking tape,100 cm ... A: Be sure to read my previous responses on the egg drop -- maybe you did already, as padding is the ... | ||
| Magenn wind devices True or False? | 3/18/2006 | Dan Fink |
| Q: Mr. Fink: Greetings, I hope everything is going well for you. I am a graduated chemecial ... A: It does not look like an outright fraud. However, there is critical information missing from their ... | ||
| Science fair project | 3/16/2006 | Ralph Salier-Hellendag |
| Q: ------------------------- 1)Are the plants in the dark yellow or discolored in any way? *Yes, ... A: The potting soil may have water soluable nutriants which could be keeping them going. But it still ... | ||
| Science fair project | 3/16/2006 | Ralph Salier-Hellendag |
| Q: 1) the two trays have the same kind of dirt mix? *Same potting soil from the same bag 2) the seeds ... A: Phyll, This is most curious. The original hypothesis should be correct. Are the plants in the ... | ||
| Science fair project | 3/16/2006 | Ralph Salier-Hellendag |
| Q: I am advising my 10 year old on his first Science Fair project. And we both are concerned about our ... A: You do have an interesting and rather perplexing problem. Please respond to the following ... | ||
| Density | 3/12/2006 | Ralph Salier-Hellendag |
| Q: What is density and how can you determine an object's density? A: the density of something is defined by its mass per unit volume. For instance water is 1 gram per ... | ||
| Plant Question | 3/3/2006 | Ralph Salier-Hellendag |
| Q: I was just wondering if I could have a detailed description of two plants adapted to their ... A: Dry environment plants are often called "succulents" and include all of the Cactus family plants. ... | ||
| thermometers | 2/25/2006 | Ralph Salier-Hellendag |
| Q: How did Fahrenheit and Celcius develop their scales on the thermometer? A: [ Home Page | Message Boards | News | Archive | Books | Buy Stuff | FAQs, etc. ] A Staff Report by ... | ||
| hamster wheel bearing | 2/20/2006 | Dan Fink |
| Q: My mom is trying to help me put togther a hamster wheel to produce electricity. I am 10. can you ... A: There are so many different kinds of bearings out there that it's hard to give specific ... | ||
| Global Warming | 2/18/2006 | Dan Fink |
| Q: I would like to find out in your opinion what are the facts that global warming is occuring,what is ... A: I do believe the scientists who are saying that global warming is real, and that temperatures are ... | ||
| Global Warming | 2/18/2006 | Ralph Salier-Hellendag |
| Q: I would like to find out in your opinion what are the facts that global warming is occuring,what is ... A: Global warming is occuring. Its causes are varied but for many, it is in part caused by the buring ... | ||
| physics and sports | 2/14/2006 | Dan Fink |
| Q: I am trying to do a physics experiment for my 5th grade science fair project. I want it to involve a ... A: Sounds fun! You definitely want to cover conservation of momentum, where if the basketball did not ... | ||
| why ceramics are good insulators | 2/14/2006 | Ralph Salier-Hellendag |
| Q: I am doing an investigation into insulating properties on a cup of boiling water. I have explained ... A: Oh yes, there are many reasons why ceramics and even foam act as improved insulators over tin or ... | ||
| where can i find copper and zinc strips? | 2/9/2006 | Dan Fink |
| Q: do u know were i can find copper and zinc strips for my sciewnce fair project because i need to ... A: I've made LOTS of potato and lemon batteries in my career as a mad scientist! Galvanized nails work ... | ||
| Science fair ideas | 2/8/2006 | Ralph Salier-Hellendag |
| Q: Do you have any ideas for our 5th grade son's first science fair project? Looking for something not ... A: There are lots of great ideas for science fair projects to be found a the local public library. ... | ||
| evaporation | 2/5/2006 | Dan Fink |
| Q: DAN I NEED TO KNOW ABOUT EVAPORATION FOR MY SONS PROJECT WE PUT TAP WATER,SALT WATER,AND POP IN ... A: Your experiment is better suited for determining the freezing/melting point of each liquid... The ... | ||
| Hamster Powered Night Light | 1/29/2006 | Dan |
| Q: I am building the hamster powered night light I saw at otherpower.com for my science fair project ... A: I have not done this project, however I am told that such an idea could work, if done right. ... | ||
| Science, Medicine and Technology | 1/29/2006 | Dan |
| Q: What is the relevance of Science, Medicine and Technology to the development of the Amercan society A: There are a number of reasons why science is important. Medicines help people get better. Science ... | ||
| Science, Medicine and Technology | 1/29/2006 | Ralph Salier-Hellendag |
| Q: What is the relevance of Science, Medicine and Technology to the development of the American ... A: In many ways, it is what drove American society. This is especially true from the late 1800's ... | ||
| science fair rules | 1/28/2006 | Ralph Salier-Hellendag |
| Q: I'm a parent that has taken over the science fair this year at my daughter's gifted school...I do ... A: Congratulations on taking on this very important and vital role in the education of your children ... | ||
| Science Project Help | 1/28/2006 | Dan |
| Q: My name is Tommy, and I need your help with my project in science. I will only need to contact you a ... A: It is probably better for you to ask in our science project area, or in one of the areas of science ... | ||
| leverage | 1/27/2006 | Dan |
| Q: Our middle school class went to a museum where there was a long pipe with a car engine on one side, ... A: Your asking about the pulley system, right? This gets into "mechanical advantage". I recommend ... | ||
| Egg Drop Competition | 1/26/2006 | Dan Fink |
| Q: I was wondering what would be the best way to build an egg drop device. We can use basically any ... A: I've included a past answer of mine to that question. If you are not restricted in your choice of ... | ||
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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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