Across
- 2. these are travelling pressure waves
- 4. energy released by an 'H' bomb.
- 6. an energy type from the sun.
- 7. stored energy in a stretched catapult
- 8. this tells us how much input energy will be transformed into useful energy.
- 9. the movement this atomic particle causes a current to flow
- 11. the units of energy
- 13. this energy is a waste energy from a light bulb.
Down
- 1. a ships engineer who developed an efficiency diagram
- 3. energy stored by objects being raised above the ground
- 5. this energy comes from a battery
- 10. can't be created or destroyed
- 12. coal has this type of stored energy