Across
- 2. describe materials that let nearly all light pass through them
- 7. bending of light
- 9. energy energy that is not causing any changes now but could cause changes in the future
Down
- 1. describes materials that do not let any light pass through them
- 3. light bouncing off an object
- 4. the back and forth motion of an object
- 5. describes materials that let some light pass through but not all
- 6. ability to do work or cause change
- 8. energy the energy of motion