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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is a wave train?
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A series of waves
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what is the crest of a wave?
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the highest point of a wave
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What is the trough of a wave?
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the lowest point of a wave
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What are the two major types of waves?
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transverse and longitudinal
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What is a transverse wave?
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a wave in which particles of the transmitting medium move back and forth at right angles to the direction of wave travel
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In which direction do the particles of a longitudinal wave oscillate?
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in the same direction that the wave moves
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What are the four properties of ordinary waves?
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wavelength
amplitude frequency speed |
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Define amplitude.
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the maximum distance that particles are displaced by a wave.
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HEIGHT
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What is the number of complete waves that pass given point in a second called?
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Frequency
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What i the SI unit of frequency?
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Hertz
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What is the change in the course of a wave as a result of a collision with an object called?
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reflection
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what is the bending of the pah of a wave as a result of a change in wave speed called?
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refraction
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True or false: Refraction always bends waves AWAY FROM the medium that slows them down.
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False.
TOWARDS |
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When frequency increases, what happens to wavelength (9assuming wave speed does not change?)
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Wavelength decreases.
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What are incident waves?
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waves that strike an obstacle
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How many seconds does it take a sound wave to travel 1 kilometer through air?
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3 seconds
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how many seconds does it take a sound wave to travel 1 mile?
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5 seconds
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What are the two main factors which affect the speed of sound in air?
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temperature and density of the air
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What equation can we use to determine the speed of sound through the atmosphere?
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speed of sound = 332 m/s + 0.61 T
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What term is sometimes used to express multiples of the speed of sound?
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Mach (numbers)
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What do we call the loud noise heard when a shock wave reaches the ear?
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sonic boom
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