Across
- 2. A lens or mirror that bends outwards
- 3. An observed change in the frequency of a wave when the source or observer is moving.
- 5. loss in the density of something,
- 6. air or gas
- 8. A change in direction of a wave when a wave finds an obstacle or an edge, such as an opening
- 12. describes matter that creates light but does not transmit an image.
- 15. The Si unit of frequency = one cycle per second
- 16. A mirror or lens that bends in
- 19. The am
- 20. decrease in volume of any object or substance resulting from applied stress.
- 22. the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
- 23. The bending of a wave as the wave passes between two substances in which the speed of a wave differs
- 24. A measure of how high or low a sound is perceived to be to be, depending on the frequency of the wave.
- 25. Maximum height of a Sound Wave.
- 26. Lowest point on a Sound Wave
- 27. a wave in which the particles of the medium vibrate parallel to the direction of wave motion
- 28. of two or more waves that results in a single wave
Down
- 1. the com
- 4. describes an object that is not transparent or translucent
- 7. The Maximum distance that the particles of a wave's medium vibrate from their rest position.
- 9. a phenomenon that occurs when two objects naturally vibrate at the same frequency; the sound produced by one object causes the other object to vibrate
- 10. The distance from any point on a wave to an identical point on the next wave.
- 11. The most common unit to measure loudness.
- 13. describes matter that allows light to pass through with little interference
- 14. a physical environment in which phenomena occurs
- 17. a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
- 18. the process of using reflective sound waves to find objects.
- 21. of waves produced in a given amount of time.