1. Energy
Jeopardy

2. 1. Energy cannot be or ___ but only .

3. 1. Created Destroyed Changed/altered/converted

4. 2. If the skate boarder starts in this spot, why won’t he make it to the top of the half-pipe?

5. 2. Energy is transferred into heat due to friction so the skate boarder has less KE to reach the top. The skateboarder cannot gain more energy than what it started with.

6. 3. GPE is determined by these two factors.

7. 3. Mass & height (Gravitational Acceleration will only change if you go to a whole new planet. )

8. 4. In a system, such as a pendulum, projectile, bouncing ball, the total ________ DOES NOT CHANGE.

9. 4. Mechanical Energy (Total Energy)

10. 5. Kinetic energy is determined by these two factors.

11. 5. Mass & speed (velocity)

12. 6. Why does the total amount of energy change when a skater changes location?

13. 6. The skater’s total energy changes due to the acceleration of gravity. The greater the mass of the planet, the higher the “g” is for potential energy (GPE=Mgh)

14. 7. The pendulum below would experience the MOST GPE at this point and WHY?

15. 7. Point A Highest off the ground at that point.

16. 8. The pendulum below would experience the MOST KE at this point and WHY.

17. 8. Point C Moving the fastest.

18. 9. The pendulum below would experience the INCREASING GPE at this point and WHY.

19. 9. Point B Gaining Height Swinging back towards the top.

20. 10. The pendulum below would experience the Increasing KE at this point and WHY.

21. 10. Point D Gains speed on the down swing.

22. 11. The ball below would have the MOST GPE and WHY.

23. 11. Ball D It is the highest off the ground.

24. 12. The baseball’s _____________ energy stays constant because KE & PE Transfer back and forth.

25. 12. Mechanical Energy (Total Energy)

26. 13. Which Object would have the LEAST GPE and WHY. A. Golf Ball. B
13. Which Object would have the LEAST GPE and WHY? A. Golf Ball B. Bowling Ball C. Tennis Ball D. Ping-Pong Ball

27. D. Ping-Pong (Least Mass)

28. 14. Which Object would have the MOST KE and WHY. A
14. Which Object would have the MOST KE and WHY? A. 10 lb Bowling Ball at 3 m/s B. 10 lb Bowling Ball at 4 m/s C. 12 lb Bowling Ball at 4 m/s D. 12 lb Bowling Ball at 5 m/s

29. 14. D- 12 lb bowling Ball at 5 m/s (Most Mass & Fastest)

30. 15. What point is MAX KE and WHY?

31. 15. Point B The ball is moving the fastest just before it hits the ground.

32. 16. What point is Increasing GPE and WHY?

33. 16. Point D Ball is gaining height

34. 17. Mechanical Energy (ME)= ______ + ______

35. 17. ME = KE + PE

36. AWESOME WORK!! TEST IS TUESDAY!! March 19th, 2013