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71 Cards in this Set
- Front
- Back
wave
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any disturbance that transmits energy through matter or space
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do waves carry energy
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yes
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do waver carry matter
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no
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a wave will travel as long as it has ____ to carry
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energy
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anything that moves up and down or back and forth in a rhythmic way is ______
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vibrating
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how are waves produced?
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by something that vibrates
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medium
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substance through which a wave can travel
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a medium can be a ____,____, or ____
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solid, liquid, or gas
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do sound waves require a medium
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yes
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do ocean waves require a medium
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yes
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a wave that requires a medium
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mechanical wave
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sounds waves cannot travel through _____ ____
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empty space
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waves that do not require a medium
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electromagnetic waves
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electromagnetic waves travel fastest through ____
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empty space
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2 types of waves
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transverse and longitudinal
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transverse and longitudinal waves combined
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sufrace wave
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transverse waves
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wave in which the particles vibrate with an up or down motion
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what does transverse mean
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moving across
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highest point of a wave
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crest
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lowest point of a wave
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trough
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an example of a transverse wave
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electromagnetic wave
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longitudinal waves
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particles of the medium vibrate back and forth along the path the wave travels
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a section of a longitudinal wave where the particles are crowded together
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compression
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a section of a longitudinal wave where the particles are less crowded together
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rarefraction
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an example of a longitudinal wave
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sound waves
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particles of the medium in a surface wave move in ______
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circle
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particles move _____ at the crest and _____ at the trough
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forward and backwards
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an example of a surface wave
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ocean waves
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where the particles of a medium stay where there are no disturbances
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rest position
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the larger the amplitude, the ____ the wave
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taller
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how is the amplitude of a transverse wave measured
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from the rest position to the crest or to the trough
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a wave with a larger amplitude carries _____ energy than a wave with a smaller amplitude
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more
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______ amplitude= low energy
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small
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large amplitude= _____ energy
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high
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the distance between one point on a wave and the nearest point just like it
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wavelength
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how do you measure wavelength for a transverse wave
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between 2 crests or distance between 2 troughs
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how do you measure wavelength for a longitudinal wave
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distance between 2 compressions or between 2 rare fractions
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the number of waves produced in a given amount of time
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frequency
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how do you measure frequency for a transverse wave
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count the top number of crests or troughs that pass a point in a certain amount of time
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how do you measure frequency for longitudinal wave
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count the number of compressions or rare fractions that pass a point in a certain amount of time
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what is frequency measured in
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hertz
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as the frequency of a wave increases, the wavelength ____
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decreases
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___ ____ the speed at which a wave travels
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wave speed
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what does the speed of a wave depend on
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the medium in which the wave is traveling
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do sound waves travel faster in gases or solids
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solids
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do sound waves travel faster in higher or lower temperatures
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higher
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what is the formula for calculating wave speed
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v=a x f
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v=
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wave speed
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a=
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wavelength
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f=
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frequency
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what is the unit for velocity
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m/s
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what is the unit for wavelength
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m
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what is the unit for frequency
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Hz
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reflection
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bounces back after striking a barrier
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can all waves be reflected
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yes
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reflected sound waves are called ______
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echos
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refraction
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bending of a wave as it passes at an angle from one medium to another
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what happens when a wave moves from one medium to another
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speed changes
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the bending of waves around a barrier or through an opening
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diffraction
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what does the amount of diffraction depend on
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wavelength and size of the barrier or opening the wave encounters
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when will large diffraction occur
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barrier or opening is the same size as or smaller than the wavelength of an approaching wave
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when will small diffraction occur
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barrier or opening is larger than the wavelength of the wave
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the result of 2 or more waves overlapping
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interference
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2 types of interference
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constructive and destructive
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occurs when the crests of one wave overlap the crests of another wave
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constructive inferference
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the resulting wave from constructive interference has a ____ amplitude than the original wave
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larger
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occurs when the crests of one wave and the troughs of another wave overlap
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destructive interference
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the resulting wave from destructive interference has a ____ amplitude than the original wave
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smaller
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standing wave
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wave that forms a stationary pattern in which portions of the wave are at the rest position due to a total destructive interference and other portions have a larger amplitude to consecutive interference
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resonant frequency
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the frequency at which a standing wave is produced
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who does resonance occur
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when an object vibrating at or near the resonant frequency of a second object causes the second object to vibrate
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