Across
- 1. Energy generated by friction, for example
- 6. How a radiator warms a room
- 8. An approach to improving efficiency
- 10. Unit of measure for energy
- 11. Potential energy stored in a stretched spring
- 12. An to improving efficiency
- 13. The energy of movement
Down
- 2. How the Sun's energy reaches planet Earth
- 3. Potential energy gained when I climb the stairs
- 4. Degree of hotness
- 5. Energy an object has due to its position
- 6. How a saucepan handle gets hot
- 7. useful energy out/total energy in
- 9. Force times distance moved