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MVMS: waves

Light, Sound and Waves

QuestionAnswer
White light all colors of the rainbow
Primary colors of light red, green, and blue
Light a type of wave that carries energy, no medium necessary
Reflected waves bounce off of surfaces
Refracted waves bend as they travel through different mediums
Diffraction waves bend around a barrier
Opaque material that allows no light to pass through (wall)
Translucent material that allows some or little light to pass through (stained glass window)
Transparent material that allows almost all light to pass through (regular glass window)
ROYGBIV color order of the visible light spectrum
Wave repeating disturbances or movements that carry or transfer energy through matter or space
Matter anything that has mass and takes up space
Mechanical waves waves that need matter to be able to transfer energy
Medium the matter that energy travels on
Transverse/longitudinal wave matter moves at right angles to the direction of the wave
Compression wave matter moves forward and backward
Sound wave compression waves, travel faster in solids, cannot travel in space due to the fact they need a medium
Wavelength the distance between one point on a wave and the identical point on the next wave
Amplitude the distance measured from the line of origin/rest position straight up to the crest or down to the trough. Related to the energy a wave can carry. Larger amplitude the greater the energy
Frequency the number of waves that pass a fixed point in one second. Measured in hertz (Hz)
Crest the highest point on a wave
Trough the lowest point on a wave
Compression the densely packed area of a compression wave
Rarefaction the less dense area of a compression wave
Constructive interference two waves with the same frequency overlap and form a single larger wave.
Destructive interference when waves of different frequencies overlap and cancel out each other.
Intensity the amount of energy that flows through a certain area in a specific amount of time.
Loudness the perception of intensity. The higher the intensity the louder the sound
Decibels the measure of intensity of a sound, abbreviated by dB
Pitch the highness or lowness of a sound, pitch depends on the frequency of the sound wave
Ultrasonic waves sound waves with frequencies above 20,000 Hz
Infrasonic waves sound waves with frequencies below 20 Hz (subsonic)
Doppler effect the change in frequency that occurs when the source of the sound is moving in relative to the listener
Created by: amastria
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