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19 terms

6th Grade Science (sound and light waves)

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wave
any disturbance that transmits energy through matter or space
medium
a substance through which a wave can travel
transverse waves
waves in which particles vibrate with an up-and-down motion (moving across)
longitudinal waves
waves in which particles of the medium vibrate back and forth along the path that the wave travels
compression
a section of a longitudinal wave where particles are crowded together
rarefaction
a section of a longitudinal wave where particles are less crowded than normal
crest
the highest point of a transverse wave
trough
the lowest point between each crest of a transverse wave
surface waves
a combination of transverse waves and longitudinal waves
amplitude
the maximum distance the wave vibrates from its rest position
frequency
the number of waves produced in a given amount of time
wave length
the distance between any two adjacent crests or compressions in a series of waves
wave speed
the speed at which the wave travels
reflection
occurs when a wave bounces back after striking a barrier
refraction
the bending of a wave as it passes at an angle from one medium to another
diffraction
the bending of waves around a barrier or through an opening
interference
the result of two or more waves overlapping
standing wave
a wave that forms a stationary pattern in which portions of the wave are at the rest position due to total destructive interference and other portions have large amplitude due to constructive interference
resonance
when an object vibrating at or near the resonant frequency of a second object causes the second object to vibrate