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A Fair Test Investigation

by Niamh Murrin

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A Fair test investigation
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By Niamh Murrin
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Heat and Forces
??
Thought Bubble
Investigation: Does the temperature of a tennis ball affect how high it can bounce?
What we did:

1. We took a tennis ball from room temperature and dropped it from 1.5 meters off the ground. We measured the length of the bounce of the ball.

2. We took a cold tennis ball (was in a freezer) and we dropped it from 1.5 meters off the ground. We measured the length of the bounce of the ball.

3. We took a warm tennis ball (was placed in a box with hot water bottles) and we dropped it from 1.5 meters off the ground. We measured the length of the bounce of the ball.
Warm ball dropping from 1.5 m
Room temperature ball dropping from 1.5 m
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