Across
- 6. spectrum the spectrum of light
- 7. a light wave that is focused
- 9. how fast something is moving
- 11. heat moved by air or liquid
Down
- 1. a form of heat or energy
- 2. how many waves go in one second
- 3. heat moved by touching
- 4. to reflect something
- 5. how fast something's speed goes up
- 8. the measurement of the node to the crest or trough
- 10. what keeps heat or electricity away