Across
- 6. energy that travels in a straight line in empty space
- 7. when light is taken in by an object
- 8. when light bounces off an object
- 9. how high or low a sound is
- 10. how loud a sound is
- 13. stored energy
- 15. energy of motion
Down
- 1. when light slightly changes direction when passing from one object to another
- 2. energy stored in materials like food and fuels
- 3. energy of moving particles (heat)
- 4. energy made up of vibrations
- 5. the light we can see
- 11. can either be potential or kinetic energy
- 12. the ability to do work or cause a change
- 14. rubbing together of two objects