Across
- 5. a cup appears to be red in white light; this color is being reflected
- 6. the change in direction of a wave as it passes from one medium into another at an angle
- 7. an example of an electromagnetic wave
- 8. materials that do not let any light pass through them
- 12. a measure of how far the particles in the medium move away from their original position
- 13. the transfer of light energy to matter
- 14. a type of wave in which particles move perpendicularly to the direction the wave travels
- 15. a frog in white light appears green because it ________ green light
- 17. matter that transmits light
- 20. this is the wavelength for a wave with a speed of 75 m/s and a frequency of 15 Hz
- 22. a type of wave that travel without a medium
- 23. when the coils of a spring are squeezed close together
- 28. an example of a longitudinal wave
- 30. this occurs when light is sent in many directions as it passes through a medium
Down
- 1. the points where the wave is lowest
- 2. a type of wave that requires a medium
- 3. the number of cycles in an amount of time
- 4. the points where the wave is highest
- 6. the bouncing of light off a surface
- 9. wave ______ is equal to the frequency multiplied by the wavelength
- 10. ripples on a pond are an example of a _________ wave
- 11. the distance from any point on a wave to an identical point on the next wave
- 16. a disturbance that transfer energy from one place to another
- 18. materials that transmit light but do not let light travel straight through
- 19. a wave in which particles move back and forth in the same direction that the wave travels
- 21. electromagnetic waves do not require a medium so they travel in a __________
- 24. the material through which a wave travels
- 25. when the coils of a spring are spread apart
- 26. waves travel faster in _______ than in liquids
- 27. waves travel faster in ______ air than in cold air
- 29. frequency is expressed using this unit