| Subject | Date Asked | Expert |
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| velocity of different liquids | 11/20/2009 | Ralph Salier-Hellendag |
Q: I am working on a 5th grade science fair project and I am having trouble locating resources for the ...
A: The problem is not so much the velocity but rather the amount of drag/friction based on the ...
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| Boiling Liquids | 11/19/2009 | Ralph Salier-Hellendag |
Q: I am doing a science fair project on boiling different liquids with water, but I don't exactly know ...
A: Since all of these liquids already are water based, I'm not sure that you will find different ...
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| Science Fair Projects | 11/18/2009 | Ralph Salier-Hellendag |
Q: Salier-Hellendag I am a high school student, in the tenth grade. I designed a special studies ...
A: It may not be a direct aid to society but many of todays diseases are genetically studied and they ...
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| light an LED or bulb | 11/18/2009 | Dan Fink |
Q: This may be a daft question but is it possible to light up (even if very faintly) an LED or small ...
A: It's not a daft question, but it won't work. There's not enough energy potential from skin ...
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| science | 11/18/2009 | Sue Kayton |
Q: What is chromatography??
A: Look it up on wikipedia. It's the way to separate a chemical (like ink) into the parts that make it ...
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| Evaporation | 11/18/2009 | Dan Fink |
Q: I am working on my science fair project and I am writing a paper on evaporation of salt water or ...
A: The online Wikipedia is actually very reliable, at least with well-known science topics. When you ...
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| science | 11/18/2009 | MGR |
Q: Why does more gas escape from a bottle of soda when you open it at room temperature than if you get ...
A: When the soda is warm, the more CO2 is able to dissolve in the soda; when lower, less CO2 dissolves ...
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| Science Fair Projects | 11/18/2009 | Ralph Salier-Hellendag |
Q: Salier-Hellendag I am a high school student, in the tenth grade. I designed a special studies ...
A: Have you ever worked with recombinant DNA or RNA? Have you ever extracted DNA from plants like a ...
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| heat | 11/17/2009 | Sue Kayton |
Q: If I do a science experiment by placing hot boiled eggs in 2 seperate containers, 1 lined by foil ...
A: 1. Why does skin tan in the sun? People's skin has melanin in it. Melanin is a dark brown ...
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| chemistry | 11/17/2009 | Dan Fink |
Q: There are many simple explanations on how to make a potato or fruit clock. I want to make a clock. ...
A: You want an LCD clock, *not* LED. LEDs use too much energy. You can get one at any K-mart, Walmart ...
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| chromatograpy | 11/17/2009 | Ralph Salier-Hellendag |
Q: HOW DO YOU EXPLAIN CHROMATOGRAPHY IN SIMPLE WORDS XX
A: Chromatography is a scientific method for looking at the component parts of a substance like a dye ...
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| Use of hydrogen after electrolysis | 11/15/2009 | Ralph Salier-Hellendag |
Q: Sir,I have done electrolysis by using electrode made using many aluminium foil and using washing ...
A: You can use the hydrogen to float a balloon, it will burn explosively so it is not good for cooking, ...
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| invention convention | 11/14/2009 | Ralph Salier-Hellendag |
Q: hey,I'm in 5th grade and we have to do invention convention its due in 1 and a half weeks and i half ...
A: you have a very pretty name. So, you need to invent something. What sorts of things do you like? ...
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| Dry Ice and Milk | 11/12/2009 | Dan Fink |
Q: My son is doing a science fair project mixing dry ice and milk in a "volcano cake" to create an ...
A: Bubbles are actually fairly complicated things, they are thin films of water. It's really the ...
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| science learning age | 11/12/2009 | Sue Kayton |
Q: what is the right age to start teaching science stuff?and what will it be about?
A: Before a kid is one year old. When a kid asks "why", tell them why, using simple language. Forget ...
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| The Big Bang | 11/12/2009 | Dan Fink |
Q: If the Big Bang was only made of dust, ice and rocks, then how did things like seeds grow without ...
A: According to the theory, there was no dust, ice and rocks -- there were not even any atoms at all! ...
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| about the carbonation measurement | 11/12/2009 | Ralph Salier-Hellendag |
Q: On the answer about how to measure carbonation, how do you invert the cup without all of the water ...
A: No. Put the cup into the basin, filled with water, turn the cup over while it is submerged in the ...
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| about the carbonation measurement | 11/11/2009 | Ralph Salier-Hellendag |
Q: On the answer about how to measure carbonation, how do you invert the cup without all of the water ...
A: The trick is to invert the measuring cup while it is under water in the basin. As long as the mouth ...
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| Sugar | 11/11/2009 | Dan Fink |
Q: what is the Quantum physics of sugar?
A: Quantum Mechanics is simply a different way of looking at how things behave at the atomic and ...
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| Tornado projects What is the independent variable? | 11/11/2009 | Ralph Salier-Hellendag |
Q: What is the independent variable in a tornado science project. me and my partner chose a tornado. so ...
A: A tornado is not an experiment, it is a demonstration. Most science fairs require that you do an ...
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| egg drop | 11/11/2009 | Dan Fink |
Q: I have to make something using foam cups and toothpicks in order to prevent the egg from breaking. ...
A: It sounds like you are limited in the types of materials you can use. So I'll explain the best way ...
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| chromatography | 11/10/2009 | Sue Kayton |
Q: at my school a science fair is going to happen in march and we have started preparing what we are ...
A: Chromatography is a great project for a 9-th grader. There are many, many other fun science ...
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| chromatography | 11/10/2009 | Sue Kayton |
Q: at my school a science fair is going to happen in march and we have started preparing what we are ...
A: Some kinds of markers use water-soluble ink. Others do not. If you want to use water, make sure to ...
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| chromatography | 11/10/2009 | Sue Kayton |
Q: at my school a science fair is going to happen in march and we have started preparing what we are ...
A: For chromatography, you are dissolving different chemicals in a solvent, or more than one solvent. ...
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| Dry Ice and Milk | 11/9/2009 | Ralph Salier-Hellendag |
Q: My son is doing a science fair project mixing dry ice and milk in a "volcano cake" to create an ...
A: Well here is an experiment that can be done using Dry Ice (note the previous warning about this ...
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| Dry Ice and Milk | 11/9/2009 | Dan Fink |
Q: My son is doing a science fair project mixing dry ice and milk in a "volcano cake" to create an ...
A: I love science experiments, and those you can actually EAT afterwards are the best! What's ...
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| Dry Ice and Milk | 11/9/2009 | Ralph Salier-Hellendag |
Q: My son is doing a science fair project mixing dry ice and milk in a "volcano cake" to create an ...
A: This is generally a weak "explosion" if any. Below I have provided 2 websites that provide some ...
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| Science | 11/7/2009 | Ralph Salier-Hellendag |
Q: How to make an egg survive from an egg drop project? The requirements are: Must be 15cm x 30cm or ...
A: Have you looked at all of the egg drop project ideas on the internet? There are tons of ideas! ...
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| Change 240V christmas lights to solar lighting | 11/7/2009 | Ralph Salier-Hellendag |
Q: Hi my grandson is trying to experiment with changing over the electrical component of the Christmas ...
A: This can be done but generally you will need some additional equipment besides a Photovoltaic solar ...
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| growing bacteria | 11/6/2009 | MGR |
Q: we are trying to devise a 3rd grade science fair project using petri plates with agar to test ...
A: The easiest thing to do would be to swab surfaces that you touch a lot - like a door knobs or sink, ...
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| Separating Salt from Water | 11/4/2009 | Dan Fink |
Q: I was thinking of doing a still but I'm not finding any models that i can bring to class. It needs ...
A: Well, all a still really is, is evaporating off some stuff while leaving other stuff behind. So if ...
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| magnets and electro magnets | 11/4/2009 | Dan Fink |
Q: My daughter is trying to work out an experiment with magnets and electromagnets and wants to see ...
A: If there is any way you can get a photo(s) of the project they are currently trying to do and send ...
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| Magnetic Propulsion | 11/4/2009 | Dan Fink |
Q: My daughter (6 years old - grade two) has to build a vehicle powered only by magnets. No motors are ...
A: I work with magnets for a living, for a company that designs wind turbine generators that can be ...
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| Forensics keywords | 11/4/2009 | Ralph Salier-Hellendag |
Q: What do these keywords mean? Please could you also give an example of each of them (if that makes ...
A: here in the states we have science fair competitions and these are key words used in these science ...
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| carbonation | 11/4/2009 | Ralph Salier-Hellendag |
Q: I need to explain natural carbonation of soda to a 10 year old. Could you please help? Thanks!
A: Soda like Coke, Pepsi etc... are artificially carbonated. This is done by injecting CO2 (Carbon ...
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| continuation of magnets | 11/4/2009 | Dan Fink |
Q: Dan, One last thing. Could one magnet not push another one because of polarities. If i had one ...
A: You want to get "rare-earth" magnets; the most common and inexpensive formula is ...
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| biology questions | 11/4/2009 | Ralph Salier-Hellendag |
Q: Which is heavier: Mitochondria or chloroplast?
A: This is a very hard question to answer because there is a great deal of diversity in the size of ...
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| Plants | 11/3/2009 | MGR |
Q: We are doing a project water -vs- orange juice. We are trying to figure out if a plant can survive ...
A: You are testing whether or not using orange juice instead of water will affect plant growth. This ...
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| solar calculator | 11/3/2009 | Ralph Salier-Hellendag |
Q: what is a solar calculator what are its advantages and disadvantages?
A: A solar calculator is very simply a calculator that uses a small Photovoltaic cell or solar battery ...
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| magnets and electro magnets | 11/2/2009 | Dan Fink |
Q: My daughter is trying to work out an experiment with magnets and electromagnets and wants to see ...
A: By definition, anything that spins when electric current is applied is an electric motor. The ...
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