Across
- 4. distance between the crest of one wave and the crest of another
- 5. instrument that collect and focus light
- 8. energy that travels in the form of waves
- 11. sun and all the planets are in the ___
- 12. the light in the solar system
- 13. when light separates into different colors
Down
- 1. AU is short for
- 2. rocks in space found in-between Mars and jupiter
- 3. rock in space smaller than asteroids
- 6. orbits the sun
- 7. light you can see
- 9. loose balls of ice and rock in space
- 10. natural satellite