Which volleyball will bounce higher???
Manipulated Variable:
Each volleyball has been filled with a different gas.
Responding Variable:
The height to which the ball bounces
Constant Variable:
The ball release apparatus will be the same throughout the experiment.
Each ball will be released from the same height.
The volleyballs are the same brand and size
The pressure of the gas will be constant in all the balls.
The balls are filled with 5 pounds of compressed air or helium or nitrogen.
The balls were dropped 10 times each.
This is our release device. Shop vac when turned on would hold the ball, when switched off the ball would drop.
OK, all you smart guys, which ball bounced higher???
Helium?
Nitrogen?
Compressed air?
