13 Science Fair Project Ideas – Big Questions & Hypotheses

13 Science Fair Project Ideas

Look at the 13 science fair project ideas for your science fair project by looking at this list of 13 big questions, hypotheses and materials lists.

  1. Big Question
    Why do certain compounds can be changed from one physical state to another and can gain their original state back again.

    Hypothesis
    Water can be converted into ice on cooling and back to water after heating, but certain liquids do not turn into liquids once solidified.

    Materials
    1. A Jar of Water
    2. Ice tray
    3. Oven
    4. Cake Mixture

  2. Big Question
    How can you purify water?

    Hypothesis
    Water can be purified by using certain simple methods like filtration, sand filtration, aeration and disinfection.

    Material
    1. Polluted water
    2. Filter
    3. Sand
    4. Alum
    5. An air pump
    6. few drops of chlorine

  3. Big Question
    Why does a coin placed in a container filled with water appears raised up then the actual position?

    Hypothesis
    A coin placed in a container filled with water appears to the raised up then the actual position but a coin with no water in a container shows no such effect.

    Materials
    1. Coin
    2. Container containing water
    3. empty container

  4. Big Question
    How does a glass bottle filled with different levels of colored water produce music?

    Hypothesis
    Empty glass bottles when tapped produce no significant music but bottles filled with different levels of colored water does produce.

    Materials
    1. Water
    2. Spoon
    3. 7 to 8 identical glass bottles
    4. Water colors

  5. Big Question
    Why does every thing i e is thrown upwards comes back to the ground?

    Hypothesis
    On the earth’s surface everything that is thrown upwards comes back to the ground, while on the moon it floats in the air.

  6. Big Question
    Why is consumption of tobacco injurious to the health?

    Hypothesis
    People consuming tobacco in some or the other way is more prone to cancer then people who don’t consume tobacco.

    Material
    1. Regular tobacco eaters
    2. non-tobacco eaters
    3. Sonography machine

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