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Ch 20 and 21 vocab
| Question | Answer |
|---|---|
| a periodic disturbance in a solid, liquid, or gas | wave |
| a physical environment in which phenomena occur | medium |
| a wave in which the particles of a medium move perpendicularly to the direction the wave is traveling | transverse wave |
| a wave in which the particles of the medium vibrate parallel to the direciton of the wave motion | logitudinal wave |
| the maximum distance that the particles of a wave's medium vibrate from their rest position | amplitude |
| the distance from any point on a wave to an identical point on the next wave | wavelength |
| the number of wves produced in a given amount of time | frequency |
| the bouncing back of a ray of light, sound, or heat when the ray hits the surface and doesnt go through | reflection |
| the bending of a wave as the wave passes between two substances in which the wave differs | refraction |
| a change in the direction of a wave when the wave finds an obstacle or an edge | diffraction |
| the combonation of two or more waves that results in a single wave | interference |
| a pattern of vibration that simulates a wave that is standing still | standing wave |
| a phenomenon that occurs when two objects naturally vibrate at the same frequency | resonance |
| a logitudinal wave that is caused by vibrations and that travels through a medium | sound wave |
| a measure of how high or low a sound is preceived to be, depending on the frequency of a sound wave | pitch |
| an observed change in the frequency of a wave when the source or observer is moving | doppler effect |
| the extent to which a sound can be heard | loudness |
| the most common unit used to measure loudness | decibel |
| a reflected sound wave | echo |
| the process of using reflected sound waves to find objects | echolocation |
| the explosive sound heard when a shock wave from an object traveling faster than the speed of sound reaches a person's ears | sonic boom |
| the result of the blending of several pitches through interference | sound quality |
| a sound that consists of a random mix of frequencies | noise |
Created by:
kfran0112
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