Science project

1
Science project

• Does temperature affect the bounce of a ping-pong
  ball.
• Will the hot ping-pong ball bounce higher or
  lower.
• Will the cold ping-pong ball bounce higher or
  lower.
• Will the room temp. ping-pong ball bounce higher
  or lower.

2
The materials
Yard stick
Ping-pong ball
Cold water
Hot water
3
How to do the project
Take the ping-pong ball thats room temp. and
drop it from the top of the yard stick and
record the bounce of the ball then see if it
bounce higher or lower after put the ball in the
cold or hot water
Ping-pong
Measure how high it bounce.
Yard stick
Cold water
Hot water
4
Hypothesis

• I believe that the higher the temperature the
  higher the ball will bounce.

5
Explanation

• The reason I did this was that I was just curious
  about the effect temperature would have on the
  bounce of the ball.

6
Summary

• In this experiment a ping pong ball was dropped
  three feet and the height of its bounce was
  measured. The same ball was the frozen and
  measured then placed in hot water and then
  measured.

7
Background

• I found out from previous science classes that
  gases expand when hot and contract when cold.
  Therefore, I thought with the expanded air inside
  the ball would bounce higher.

8
Experiment

• We took the room temp. Ping-Pong ball and drop it
  and measured the bounce.
• We took the hot Ping-Pong ball and drop it and
  measured the bounce.
• We took the cold Ping-Pong ball and drop it and
  measured the bounce.
• We did the room temp, The hot, and the cold
  Ping-Pong ball each three times.

9
Discussion and Conclusion

• The ping- pong ball that was at room temperature
  bounced the best. It averaged 22.3 inches. The
  frozen ping- pong ball averaged 22.3 inches, and
  the hot ping- pong ball averaged 14 inches.

10
Graph
Height inches