Across
- 4. to take in
- 6. an area where light is blocked by an object
- 8. a unit that is used to measure the loudness of sound
- 12. the bouncing of a wave off a surface
- 14. sound waves traveling and bouncing off of a hard surface and reflecting back to your ear
- 16. the loudness of a sound
- 17. the highness or lowness of sound or note, related to frequency
- 18. an empty space with no matter
- 19. objects that allow some light to pass through
- 20. the number of vibrations or wavelengths that occur during a unit of time
Down
- 1. back and forth movements of an object or medium
- 2. a lens that is thinner in the middle than at the edges; spreads light waves apart
- 3. the bending of a wave as it passes at an angle from one state of matter to another
- 5. objects that allow all light to pass through
- 7. The colors in this range of the electromagneticspectrum include red, orange, yellow, green, blue, & violet, and are the colors produced when white light passes through a prism.
- 9. energy we can see and fastest form of energy
- 10. A lens that is thicker in the middle than at the edges; focuses light waves together
- 11. a transparent material that separates white light into colors of the spectrum.
- 13. energy from vibrations in matter
- 15. objects that allow no light to pass through