A student investigates how the temperature of a solid silicone ball affects its bounce height. A silicone ball is a solid sphere of approximately 3 cm in diameter.

Plan an experiment to investigate how the bounce height of the ball changes as the temperature of the ball rises.

The apparatus available includes:

• a selection of solid silicone balls
• standard laboratory heating equipment
• a beaker large enough for a silicone ball to fit inside
• a supply of cold water.

In your plan, you should:

• list any additional apparatus needed
• explain briefly how to do the experiment, including any precautions to ensure reliable results
• state the key variables to be kept constant
• draw a table, or tables, with column headings, to show how to display the readings (you are not required to enter any readings in the table)
• explain how to use the readings to reach a conclusion.