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Waves Vocabulary

TermDefinition
Wave A disturbance that carries energy. A wave does not carry matter. Ex: An ocean wave.
Transverse Waves A wave that causes the particles of a medium to vibrate perpendicularly to the direction the wave travels. Ex: Light
Crest Highest point of the wave.
Trough Lowest point of the wave
Longitudinal Waves A wave that carries the particles of the medium to vibrate parallel to the direction of the wave. Ex: Sound waves.
Compression Where the particles are close together
Rarefaction Where the particles are spread apart
Medium The matter which a wave travels through. Ex: The earth during an earthquake
Wavelength The distance between one point on a wave and the exact same place on the next wave
Frequency How many waves go past a point in a second, measured in Hz.
Amplitude How far the medium moves from rest position
Mechanical Waves Require the particles of the medium to vibrate in order for the energy to be transferred. Can be transverse or longitudinal. Ex: Ocean waves, seismic waves; sound
Electromagnetic Spectrum Range of all types of electromagnetic radiation
Reflection When light waves bounce off an object. Ex: A mirror
Absorption Transferring of energy by light waves to particles of matter. Ex: Light absorbed in the dark
Scattering Interaction of light with matter that causes the light to change direction
Refraction Bending of a wave as it passes at an angle from one substance to another. Ex: A pencil viewed in a glass of water
Diffraction Bending of waves around barriers or through openings. Ex: Light through a crack in an open door.
Doppler Effect The change in frequency of sound caused by motion of either the listener or observer. Ex: A beeping car.
Pitch How high or low you perceive sound. As frequency increases, pitch increases. As frequency decreases, pitch decreases.
Created by: Saeglopur
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