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| a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium |
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| a physical environment in which phenomena occur |
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| a wave that requires a medium through which to travel |
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| a wave that consists of oscillating electric and magnetic fields, which radiate outward at the speed of light |
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| a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling |
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| a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
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| a vibration in rock that travels out from the focus of an earthquake in all directions; seismic waves can also be caused by explosions |
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| vibratory motion in a system in which the restoring force is proportional to the displacement from equilibrium. |
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| a vibration that fades out as energy is transferred from on object to another |
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| the highest point of a wave |
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| the pushing or pulling force exerted by the engine of an aircraft or rocket |
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| the distance from any point on a wave to an identical point on the next wave |
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| the time that it takes a complete cycle or wave oscillation to occur |
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| the number of cycles or vibrations per unit of time |
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| an observed change in the frequency of a wave when the source or observer is moving |
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| the bouncing back of a ray of light, sound or heat when the ray hits a surface that it does not through |
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| a change in the direction in the direction of wave when the wave finds an obstacle or an edge, such an opening |
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| the bending of a wavefront as the wavefront passes between two substances in which the speed of the wave differs |
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| the combination of two or more waves of the same frequency that results in a single wave |
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| constructive interference |
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| any interference in which waves combine so that the resulting wave is bigger that the original waves |
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| any interference in which waves combine so that the resulting waves is smaller than the largest of the original waves |
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| a pattern of vibration that simulates a wave that is standing still |
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