Experiments and Variables Quiz

Samantha wants to know if music helps plants grow. She plays music for one plant but forgets to water the others.

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David tests which paper towel absorbs more water by using the same amount of water on each.

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Jorge wants to see if light affects sleep, so he asks 3 friends to sleep in different rooms but never checks how long they sleep.

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Luna tests if temperature affects how fast chocolate melts. She uses a timer and tries the same chocolate in hot and cold places.

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Emily wants to know if slime stretches more when cold. She uses different kinds of slime each time.

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Why is it important to change only one variable in an experiment?

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Imagine you are testing which ball bounces higher. What would you do to make it a fair experiment?

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What makes an experiment a “bad” experiment?

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