1. Do you think the Skater will make it over the first hump? ( No friction on the track)

1. 1. Do you think the Skater will make it over the first hump?(No friction on the track) • No, because his potential energy will be converted to thermal energy • No, because he doesn’t have enough potential energy • Yes, because all of his potential energy will be converted to kinetic energy • Yes, because some of his energy will be potential and some kinetic

2. 2. Do you think the Skater will make it over the first hump?(lots oftrackfriction) • No, because his potential energy will be converted to thermal energy • No, because he doesn’t have enough potential energy • Yes, because all of his potential energy will be converted to kinetic energy • Yes, because some of his energy will be potential and some kinetic

3. 3. Do you think the Skater will make it over the first hump?(No friction on the track) • No, because his potential energy will be converted to thermal energy • No, because he doesn’t have enough potential energy • Yes, because all of his potential energy will be converted to kinetic energy • Yes, because some of his energy will be potential and some kinetic

4. 4. Do you think the Skater will make it over the first hump?(lots oftrackfriction) • No, because his potential energy will be converted to thermal energy • Yes, if not too much energy is converted to thermal • Yes, because all of his potential energy will be converted to kinetic energy • Yes, because some of his energy will be potential and some kinetic

5. 5. In the next moment, the KE piece of the pie gets larger, then • The Skater is going up hill (left) • The Skater is going down hill (right) • There is no way to tell

6. 6. In the next moment, the KE piece of the pie gets larger, then • The PE part stays the same • The PE part gets larger too • The PE part gets smaller • There is no way to tell

7. 7. In the next moment, the KE piece of the pie gets larger, then • The Skater will be going faster • The Skater will be going slower • There is no way to tell

8. A B C D E 8. The dotted line on the chart shows the energy of the Skater, where could she be on the track?

9. A B C D E 9. The bar graph shows the energy of the Skater, where could she be on the track?

10. A B C D E 10. The pie graph shows the energy of the Skater, where could she be on the track? KE PE

11. PE KE A. B. C. D. 1 3 4 2 11. If the ball is at point 4, which chart could represent the ball’s energy?

12. 1 3 4 2 12. If a heavier ball is at point 4, how would the pie chart change? KE • No changes • The pie would be larger • The PE part would be larger • The KE part would be larger PE

13. At 4 Next step 1 3 4 2 13. As the ball rolls from point 4, the KE bar gets taller. Which way is the ball rolling? • Up • Down • not enough info

14. 14. The Energy chart of a boy skating looks like this How would you describe his speed? • He is at his maximum speed • He is stopped • He is going his average speed • He is going slow • He is going fast

15. 15. The Energy chart of a boy skating looks like this How would you describe his speed? • He is at his maximum speed • He is stopped • He is going his average speed • He is going slow • He is going fast

16. C B A 16. Select a letter for each: stopped, slow and fast