1. By :Gilbert Fulton

2.  I hypothesize that the sand will have the most affect on the dropped ball

3.  Independent Variable: The type of surface the ball is being dropped on  Dependent Variable: The height of the ball after being dropped on the surface

4.  The height the ball is dropped  The same ball  The same conditions when I experiment  The same amount of force  The same metric units used

5.  Potential energy  Elastic  Friction  Air resistance  Gravity

7.  The sand did have the most affect on the dropped ball,so my hypothesis was correct.

8. By: Gilbert Fulton I hypothesize that the soccer ball will have the most affect on the dropped ball.

9.  I hypothesize that the soccer ball will have the most affect.

10.  Independent variable: The type of ball.  Dependent variable: Does the type affect the bounce of a dropped ball.

11.  The height the ball is being dropped at  The type of surface  The same conditions while testing  The same force being used  The metric units used

12.  Potential energy  Elastic  Air resistance  Gravity  Friction

14.  The soccer ball had the most affect and my hypothesis was correct.

15. By: Gilbert Fulton

16.  I hypothesize that the football will have the most affect

17.  Independent variable: The sizes of the ball  Dependent variable: The affect of the ball being dropped

18.  The type of surface  The height the ball is being dropped at  The same metric units used  The same force applied  Experimenting in the same conditions

19.  Elastic  Gravity  Air resistance  Friction  Potential energy

21.  The basketball had the most affect and my hypothesis was incorrect.