Chapter 20 test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| any disturbace that transmits energy through matter or empty space | wave
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| does the material through which a wave travels move with the energy? | no
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| what is the substance through which a wave travels? | medium
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| do sound waves need a medium? | yes
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| do eletrocmagentic waves need a medium? | no
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| what are some examples of electromagentic waves? | visible light, microwaves, x rays
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| what is the type of wave that moves in an up and down motion? | transverse waves
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| highest point of a transverse wave? | crest
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| lowest point of a transverse wave? | trough
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| electromagnetic waves are --- waves | transverse
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| what is the type of wave whose particles vibrate back and forth? | logitudinal
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| places in a logitudinal wave where particles are crowded together | compression
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| places in a logitudinal wave where particles are dispersed | rarefaction
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| sound waves are --- waves | logitudinal
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| surface waves are made up of --- and --- waves. | logitudinal and transverse
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| the maximum difference that the particles of a wave's medium vibrate from their rest position | amplitude
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| what is the rest position in a wave? | the point where the particles of a medium stay with no disturbances
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| larger amplitude = --- (more or less) energy | more
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| wavelength | the distance between any two points next to each other on a wave
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| longer wavelength = --- (more or less) energy | less
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| the number of waves produced in a given amount of time | frequency
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| what is frequency measured in? | Hertz (Hz)
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| higher frequency = (more or less) energy | more
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| the speed at which a wave travels | wave speed
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| what is the formula for wave speed? | wave speed = wavelength x frequency
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| happens when a wave bounces back after hitting a barrier | reflection
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| can all waves bee reflected? | yes
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| what is a reflected sound wave called? | echo
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| the bending of a wave as the wave passes from one medium to another at an angle | refraction
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| when a wave enters a new medium, do the wavelength and wave speed often change? | yes
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| the bending of waves around a barrier or through an opening | diffraction
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| the result of two or more waves overlapping | interference
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| construcive interference? | when waves combine
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| destructive interference? | when waves cancel each other out
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| a pattern of vibration that stimulates a wave that is standing still | standing wave
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| the frequencies at which standing waves form | resonant frequencies
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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