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45 Cards in this Set
- Front
- Back
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Whats a wave?
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a disturbance that transfers energy from place to place
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What is a medium?
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the material thru which a wave passes
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T/F
Waves travel trough the medium without actually moving the medium with it. |
True
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What are the two types of waves?
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Transverse
Longitudinal |
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What are transverse waves?
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waves that move the medium at right angles to the direction in which the waves are traveling
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What are longitudinal waves?
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move particles parallel to the direction the wave is moving, “push-pull” waves
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What happens to the medium while the wave moves?
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it doesn't move
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What are 3 properties of waves?
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amplitude, wavelength, frequency
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what is the amplitude in a transverse wave?
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the height away from the “rest” position
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What's the amplitude of a longitudinal wave?
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the measure of how compressed or rarefied the medium becomes
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What's the wavelength?
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the distance between two corresponding parts of a wave
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What is the frequency?
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the number of complete waves that pass a given point in a certain period of time
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How is a frequency measured?
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in hertz
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What is one Hz?
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a wave that occurs once every second
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Unit for speed?
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meters/sec
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Formula for speed?
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wavelength x frequency
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Formula for frequency?
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speed/wavelengh
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Unit for wavelength?
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meters
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Formula for wavelength?
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speed/frequency
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What is a wavelength designated by?
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Greek letter lambda
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What are the two interactions of waves?
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refraction
reflection |
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What is refraction?
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The bending of a wave due to the wave moving from one type of medium into another
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What is reflection?
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A bounce back wave
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What is the angle of incidence?
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the angle of the wave coming into the object reflecting the wave
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What is the angle of reflection?
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the angle bouncing off and going away from the object
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What is a wave passing a barrier or going through a hole in a barrier bends and causes the wave to wrap around the barrier?
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Diffraction
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What is an interference?
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when two or more waves meet, they interact
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What is the combining of waves to cause higher amplitude of any of the original waves?
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Constructive Interference
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What is it when the combining of the waves produce a new wave with a smaller amplitude than the beginning waves
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a destructive interference
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What are standing waves?
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the combining of the incoming and reflected wave so that the resultant appears to be standing still
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What is a node?
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the point where Constructive Interference and Destructive Interference cause an amplitude of zero on the standing wave
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What is the point where Constructive Interference and Destructive Interference of a standing wave are represented by the crest and the trough?
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antinode
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What is the point where vibrations traveling thru an object matches the natural vibrations of an object?
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resonance
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What's an example of resonance?
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an opera singer hitting a note and shattering a crystal glass
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What is a wave caused by the release of energy due to earthquakes?
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seismic waves
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What is a wave passing a barrier or going through a hole in a barrier bends and causes the wave to wrap around the barrier?
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Diffraction
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What is an interference?
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when two or more waves meet, they interact
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What is the combining of waves to cause higher amplitude of any of the original waves?
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Constructive Interference
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What is it when the combining of the waves produce a new wave with a smaller amplitude than the beginning waves
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a destructive interference
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What are standing waves?
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the combining of the incoming and reflected wave so that the resultant appears to be standing still
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What is a node?
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the point where Constructive Interference and Destructive Interference cause an amplitude of zero on the standing wave
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What is the point where Constructive Interference and Destructive Interference of a standing wave are represented by the crest and the trough?
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antinode
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What is the point where vibrations traveling thru an object matches the natural vibrations of an object?
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resonance
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What's an example of resonance?
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an opera singer hitting a note and shattering a crystal glass
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What is a wave caused by the release of energy due to earthquakes?
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seismic waves
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