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# Unit 12 test Review

### Unit 12 Waves

TermDefinition
Sound waves do carry energy
Mechanical waves always need a medium through which to transport energy
The particles in a surface water wave Move back and forth, in a circle and Up and Down
Transverse Waves Waves in which the particle of medium move at right angles to the direction of the wave
Seisinic Waves waves caused by an earthquake
Rarefaction the troughs of a transverse wave correspond to the compressional wave
Trough the lowest point on a transverse
Amplitude wave that is measured from the crest of one wave to the crest of the next
If the wavelength of a given wave decreases, you know that its frequency will increase
Two waves have the same frequency and wavelength, but the first wave has a greater amplitude. The energy of the first wave is greater than that of the second
Hertz The unit for frequency
Resonance the ability of an object to vibrate by reflecting energy
Wave Repeating disturbances that transfer energy through matter or space
Light is one type of wave that can travel through empty energy
Transversal and compressional two type of mechanical waves
Seisic waves can travel through Earth and along Earth surface
Rarefaction the area where the particles are farthest apart is a rarefaction
compression the compressions in a compressional wave correspond
Wavelength the symbol lambda
Transverse Waves A line perpendicular to a reflecting surface
Refraction and Diffraction involve the bending of waves
Water waves transverse and compressional
Amplitude The energy a wave carries is measured
Distractive interface When the crest of one wave passes through the trough of another waves
Velocity When a wave passes from a less dense medium, like air to a medium of greater density, like water
Wave A has greater frequency and wave B, but the amplitude of the two waves is the same. The energy of wave A is EQUAL TO that of wave B
Reflection The property of light that allows you to see yourself in a mirror.
When light passes from water into air the light bends AWAY FROM the normal
When two sound waves are out of phase The amplitude and loudness DECREASE
Waves Repeating disturbance that transfer energy through matter or space
Energy Light is one type of wave that can travel through empty space to transfer
destructive interference When the crest of one wave passes through the tough of another wave
Created by: spotsville2