Across
- 2. are used in satilites they can travel through space
- 5. a process which needs heat fuel and o2
- 12. is an energy from a moving object
Down
- 1. a force caused by mass of an object
- 3. is a rate of transfer of 1 joule per second
- 4. a form of energy that can travel through metals and some liquids
- 6. the start of the universe
- 7. heat transfer that can travel through space
- 8. is energy that is not usefully transfered
- 9. a formof pure energy
- 10. energy transferred to where it is wanted
- 11. a form of energy that can pass through space and create brightness