Across
- 3. when light bends as it enters a different medium
- 4. is the number of waves that pass a point in a certain period of time.
- 6. this type of radiation has the lowest energy
- 7. where two plates move towards each other
- 10. this type of radiation has the highest energy
- 12. theory in which the earth is broken up into plates
- 13. where two plates slide against each other
Down
- 1. when light bounces off of a surface
- 2. where two plates move away from each other
- 5. a disturbance that travels through a medium from one location to another location.
- 8. space that has absolutely no matter
- 9. any substance that has mass and takes up space by having volume.
- 11. the only type of radiation that we can see