ideas for a science fair projects????????????????????????????????????????????????

i need ideas for third grade science fair projects

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  • 1 decade ago
    Favorite Answer

    do a project on how if your in space that having no gravity makes you grow faster beacuse there is no pressuer on your spine to holld your groth down

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  • Marion
    Lv 4
    4 years ago

    I recently judged a Jr. High science fair. Some of the fair projects were really creative. "They color of cool"Can the color of shingles affect the temperature of a house? "Night Writers" - How does lack sleep affect your motor skills? They had people stay up all night giving them typing test at various points of the night and after things like drinking a cup of coffee. "The unpopables" - Which brand and/or flavor of popcorn has fewer un popped kernels ? There were so many that were great. but these are the ones that I remember as the best

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  • 1 decade ago

    I think in the third grade I did a project on the human lungs and make a model and had balloons as the lungs so you could see them inflate when you inhale.

    You could do something with the different types of plastics.

    http://ezinearticles.com/?Third-Grade-Science-Fair...

    http://www.free-science-fair-projects.com/Science-...

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  • Anonymous
    1 decade ago

    Water purification systems.

    1. Solid rock formations filtering the water or

    2. Sandy soil filtering the water to be more pure

    3. Modern technology, like a faucet filtration system

    Which method works best for our time?

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  • 1 decade ago

    im having a science fair right now!!

    my project was does salt water effect the growth of a plant..

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  • Anonymous
    1 decade ago

    Make a Rube Goldberg machine, all hail the awesome power of physics!

    http://en.wikipedia.org/wiki/Goldberg_machine

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  • 1 decade ago

    There is always the Volcano thing with lava coming out the top. You get the lava to come out by mixing baking soda with vinegar

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  • 1 decade ago

    when i had science fairs i did mine on bouyancy and i didnt another on what type of lighting did peas grow better in.

    my best friend did one on phobias and which were the most common

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  • 1 decade ago

    When I was in 3rd grade we had an Invention Convention. That is what you should do. My invention was the Handy Helper! It was really cool. But that was in 3rd grade... Hope this helps!

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  • 1 decade ago

    Which things cause global warming and which are the most harmful to the enviorment.

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