Find out if the temperature of the squash ball makes a difference on how high it bounces on the same surface area.

Apparatus:

1. Ruler
2. Squash ball
3. Water bath
4. Thermometer
5. Kettle

Diagram:

Method:

             Firstly I will collect my apparatus, with the experiment set up I will heat the water in the bath using the kettle. I will record the temperature using a thermometer, I will leave the ball in the water for 1 minute. With the ball heated I will drop it from a distance of 1m from the table. I will check how high it bounces back up with a ruler. For a fair test I will use the same surface, keep my measurement the same and repeat the experiment twice I must make sure I keep those settings for a fair test otherwise there is no point in the experiment and it would fail, making sure it is a fair test I can get my results accurate. I will record my results in a table and calculate an average.

The range of temperatures I will be using goes from 8  to 90  I have used 8 different temperatures and range in about 10  between them.

Results:

Conclusion:

                  My results show that my prediction was correct as the temperature of the ball increase it bounces higher. My graph shows a line of best fit that is positive. The line points out that the increase of temperature effects how high the ball bounces.

Evaluation:

                 I am pleased with my investigation and thought it was very accurate. In my results I used a wide range of temperatures so it showed the effect of temperature on the ball more. My graph proved my prediction correct. I thought I had enough results to prove the purpose of the investigation. I stuck to my method the whole way through and completed the experiment successfully. If I had any odd results I could say that I had only one; when the temperature was 77  the ball only bounced 43cm I would of expected to bounce a little higher, but pleased I only had 1 odd result. I think my results were reliable and I’m confident with my conclusion.