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Sound and Light
| Term | Definition |
|---|---|
| wave | rhythmic disturbance that carries energy through matter or space |
| amplitude | height of a crest or depth of a trough for light wave, amount of particles squeezed into a compression for sound wave |
| pitch | describes highness or lowness of a sound |
| resonance | a phenomenon that occurs when two objects naturally vibrate at the same frequency, the sound produced by one object causes the other to vibrate |
| frequency | the number of waves that pass a point in one second, measured in Hertz (Hz) |
| compression | area on a sound wave where particles are "squished" together during a vibration |
| rarefaction | part of a sound wave where particles are "rarely" found and more spaced out during a vibration |
| Doppler Effect | a change in frequency (pitch) observed when the source of a sound and an observer are in motion relative to each other |
| refraction | bending of waves that occurs upon entering a new medium and changing speed |
| interference | waves combine to form a wave with a smaller (destructive) or larger (constructive) wavelength |
| gamma rays | electromagnetic waves with the smallest wavelength, highest frequency, and most energy |
| radio waves | electromagnetic waves with the longest wavelength, lowest frequency, and least energy |
| absorption | light energy is taken in by particles of matter |
| reflection | the bouncing back of a wave when it strikes a surface |
| crest | highest point of a transverse wave |
| trough | lowest point of a transverse wave |
| wavelength | one crest and one trough of a transverse wave, or one rarefaction and one compression of a sound wave |
| diffraction | waves bend around a barrier |
| convex mirror | image appears smaller, lot of area seen on mirror surface |
| concave mirror | image upside down unless at or in front of the focal point |
| convex lens | used to correct farsightedness, curves out |
| concave lens | used to correct nearsightedness, curves in |
Created by:
lfurrow13
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