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Upload the pictures of your activity:

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What are the variables:

1. controlled variable-

2. independent variable-

3. dependent variable-

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Independent variable-

Water balloon and air balloon and wooden table

Controlled variable-

The source of sound

Dependent variable-

The loudness of the sound

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Conclusion:Sound travels fastest in solid, liquid second and gas last.Sound travels fastest in solid because solids particles are close, liquid not so and gas far away.

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1. wooden table, because it's solid.

2.air balloon.

3. because if the sound in the air is more slow.

4.because molecules are different from others.

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What can be concluded from the results of the activity?

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Questions:

1. Through which material did the sound travel the fastest? Why?

2. Which material made the sound the softest?

3. How did the sound change when it traveled through water compared to air?

4. Why do you think sound travels differently through solids, liquids, and gases?