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Waves (with speed)

Terms in this set (21)

A Wave
is a disturbance that transfers energy from place to place
Vibration
A repeated back and forth or up and down motion.
Medium
The material through which a wave travels is called a
Gases (air), liquids, solids
Mechanical Waves
Waves that REQUIRE a MEDIUM to transfer energy.
Electromagnetic waves
Waves that can travel and transfer energy WITHOUT a medium.
Perpendicular
2 lines that cross at a right angle (90 degrees)
Transverse Waves
Waves that move the medium at right angles (perpendicular) to the direction in which the waves travel
Crest
The high part of a transverse wave
Trough
The low part of a transverse wave is called a
Longitudinal waves
Waves move the medium parallel to the direction in which the waves travel.
Parallel
2 lines that will never cross.
Compression
Area of longitudinal wave where the coils are close together
Rarefaction
Area of longitudinal wave where the coils are spread out, or rarefied
Amplitude
the maximum distance the particles of the medium carrying a wave move away from their rest position.
Wavelength
the distance between two corresponding parts of a wave.
Frequency
the number of complete waves that pass a given point in a certain amount of time.
Speed
how far the wave travels in one unit of time.
Amplitude
(Measure)
Measure rest to crest OR rest to trough
Wavelength
(Measure)
Measure starting point to starting point, crest to crest, OR trough to trough.
Frequency
(Measure)
Count number of waves and divide it by seconds.
Wave Speed
(Measure)
Frequency x wavelength

units: cm/sec or mm/sec
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