Temperature can have a great effect on the properties of different objects. Can it change the rebound of golf balls? Kelly Buckingham boiled and froze some golf balls to find out.

Hypothesis

I believe that the temperature of a golf ball will affect the amount of its rebound.

Independent variables

Temperature of golf balls

Dependent variables

Amount of rebound

Controls

• Type of golf ball used
• Height from which ball is dropped

Experimental groups

• Boiled golf balls
• Frozen golf balls

Control groups

Golf balls at normal temperature

Materials

42 golf balls

Procedures

1. Divide golf balls into three equal groups of 14 balls each.
2. Freeze one group of golf balls.
3. Drop each frozen golf ball from 7 feet and record its rebound.
4. Boil one group of golf balls.
5. Drop each boiled golf ball from 7 feet and record rebound.
6. Leave the last group of golf balls at normal temperature.
7. Drop each unchanged golf ball from 7 feet and record rebound.

Results

The recorded rebound of the golf balls, from highest to lowest is:

Normal temperature

Boiled

Frozen

Conclusions

My hypothesis was that temperature would affect the rebound of golf balls. My results proved that the hypothesis was true. Both boiling and freezing reduced the amount of rebound in the golf balls. The golf balls had the greatest rebound at normal temperature.

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