Sci-box_On the ball

			On the ball


		Which type of ball bounces the most?

		Be careful where you carry out this investigation.

PLAN	Obtain lots of different balls. Release each one from a height. Measure how high it bounces.			I WILL NEED	Various balls (e.g.: basketball, football, volleyball, tennis-ball, cricket-ball, golf-ball, squash-ball, table-tennis-ball, snooker-ball, etc.) Metre rule (or similar). Pencil & paper.
				FAIR TEST	What type of surface will you drop the balls onto? From what height will you release the balls? How will you measure the height of the bounce? How many times will you carry out the test for each ball?

	PREDICTION	Which balls do you think will bounce highest? Why do you think so?

PRACTICAL ACTIVITY	How many times did you drop and bounce each ball? What did you observe? Did you get any unexpected results? Can you explain these?			COLLECT DATA	How did you measure the height of the bounce?
				ANALYSE DATA	Do some balls bounce higher just because they are bigger? Do some balls bounce higher than you expect for their size?
				PRESENT FINDINGS	What is the best way to show what you did? Would a diagram make things clearer? What is the best way to show your findings? A simple chart would look more interesting with a few pictures.

	EVALUATE INVESTIGATION	If you were going to do this investigation again, what would you do differently to improve it?

	If you have carried out this investigation, click the icon to send in your results to Brainboxx and we may publish your work on the website. It is best to e-mail the results of your investigation or you may need to send them by post. Make sure you get permission from a teacher, parent or other adult before you get in touch.
			Bouncing ball