Across
- 5. when light bounces off an object
- 6. a state of matter where particles move very fast and are spread out
- 9. to give off or release
- 10. the frequency of sound
- 12. the bending of the direction of light waves
- 13. matter that sound and light waves travel through
- 14. a type of energy that travels in waves and made by vibrations
Down
- 1. a measure of how hot or cold an object is
- 2. the space where two lines meet
- 3. to take in or soak up
- 4. the measure of loudness
- 7. a type of energy that makes it possible to see the world
- 8. the rapid or quick back and forth movement
- 11. a piece of glass that splits light into its colors