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Introduction to Waves
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The ability to do work or cause change
energy
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The distance an object travels per unit of time; how "fast" it moves
speed
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highest point of a transverse wave
crest
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waves that do not need a medium to travel through (ex: visible light waves)
electromagnetic waves
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part in a longitudinal wave where the particles of the medium are far apart
rarefaction
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waves that move parallel to the direction in which the waves travel
Longitudinal waves
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the bouncing back of a wave when it hits a surface through which it cannot pass.
reflection
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A repeated back-and-forth or up-and-down motion
vibration
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part in a longitudinal wave where the particles of the medium are close together
compression
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lowest point of a transverse wave
trough
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waves that require or need to travel through a medium (ex: sound waves)
Mechanical waves
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The bending of a wave as it moves around an obstacle or passes through a narrow opening
diffraction
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waves that move at right angles to the direction in which the waves travel
transverse waves
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the interaction between waves that meet
interference
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the number of complete waves that pass a given point in a certain amount of time
frequency
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The ability to do work or cause change
energy
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tells the amount of energy carried by a wave; how "loud" it is
amplitude
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Unit of measurement for frequency Hint: abbreviation Hz
Hertz
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the material through which a mechanical wave travels (solid, liquid, gas)
medium
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The bending of a wave as it passes at an angle from one medium to another
refraction
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a disturbance that transfers energy from place to place
waves
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