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ch 20 PS HRW
ch 20 PS HRW
14
Physics
8th Grade
04/03/2012

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Term
amplitude
Definition
the maximum distance that the particles of a wave's medium vibrate from their rest position
Term
diffraction
Definition
a change in the direction of the wave when the wave finds an obstacle or an edge, such as an opening
Term
frequency
Definition
the number of waves produced in a given amount of time
Term
interference
Definition
the combination of two or more waves that results in a singe wave
Term
longitudinal wave
Definition
a wave in which the particles of the medium vibrate parallel to the direction of a wave motion
Term
medium
Definition
a physical environment in which phenomena occur
Term
reflection
Definition
the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
Term
refraction
Definition
the bending of a wave from as the wave front passes between two substances in which the speed of the wave differs
Term
resonance
Definition
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
Term
standing wave
Definition
pattern of vibration that simulates a wave that is standing still
Term
transverse wave
Definition
a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
Term
wave
Definition
a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium
Term
wave speed
Definition
the speed at which a wave travels through a medium
Term
wavelength
Definition
the distance from any point on a wave to an identical point on the next wave
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