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43 Cards in this Set
- Front
- Back
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A crest and a trough make up a single....
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wavelength
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A wave peak is called a...
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crest
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A wave "bottom"-most point is called a...
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trough
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The number of waves per second is called...
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frequency
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The length of a wave is called....
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wavelength
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The height or depth of a wave from the equilibrium midline is called....
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amplitude
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The energy of a wave with high amplitude is ____ than a wave with low amplitude.
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higher
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Waves that have crests widely separated have ____ wavelengths.
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long
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Waves that look like they are squished together have ___ wavelengths and ___ frequencies.
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short
high |
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MHz literally means....
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million hertz
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Unit of frequency is...
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hertz (Hz) or
#waves/second |
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Unit of wavelength is...
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meters
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Unit of wave velocity is....
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meters/second (m/s)
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Speed of sound in room temperature air is about....
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342 m/s
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speed of light in air is about
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300 000 000 m/s
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Points f & g make up parts of a wave called....
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antinodes
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The wave part at location f is a....
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trough
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The wave part at letter g is a ....
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crest
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The amplitude of a wave is best shown by which letter in the diagram?
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Letter e, from the midline to the crest, or from midline to the trough.
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Of segments a, b, c, & d, which one has the longest wavelength?
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Segment d
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Of segments a, b, c, & d, which one has the shortest wavelength?
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section c
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Of sections a, b, c, & d, which one has the smallest amplitude?
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Section b
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Of sections a, b, c, & d, which one has the highest frequency?
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section c
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Of sections a, b, c, & d, which one has the lowest frequency?
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Section d
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If the wavelength of a wave is 3 meters and the frequency is 4 Hz, then what is the wave velocity?
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12 m/s
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If the wavelength of a wave is 20 meters and the velocity of the wave is 100 m/s, then what is the wave's frequency?
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5 Hz
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If the velocity of a wave is 50 m/s and the frequency is 2 Hz, then what is the wavelength of the wave?
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25 meters
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When waves bounce off barriers, then we say a ____ has occurred.
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reflection
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When waves change speed and direction upon entering a new medium, we say _____ has occurred.
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refraction
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When waves bend around a barrier, such as ocean waves bending around an island, we say that ____ has occurred.
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diffraction
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Light waves bouncing off a mirror is an example of ____.
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reflection
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Sound waves echoing off a canyon wall is an example of ____.
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reflection
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Ocean waves slowing and coming in to the shallow water at the shore is an example of ___.
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refraction
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Light changing directions as it passes through a glass of water is an example of ____.
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refraction
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Waves that require a medium in order to travel are called ________ waves.
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mechanical
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Waves that DO NOT require a medium in order to travel are called _____ waves.
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electromagnetic
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Electromagnetic is a fancy word for .....
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light
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Waves, such as light and water, that oscillate at 90 degrees to the direction in which they travel are ____ waves.
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transverse
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Waves, such as sound and some earthquake waves, compress and expand to and fro, and we call them ____ waves.
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longitudinal
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Sound travels best through ____ materials and worst through ___ materials.
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solid
gaseous |
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When sound moves to you from across the room, from someone speaking, does the air have to move from him to you?
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No. Air only gets slightly disturbed as sound passes through it.
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"Crests" & "troughs" on transverse are comparable to ____ &___ on longitudinal waves.
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compressions & rarefactions (expansions)
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Another name for an "expansion" on a longitudinal wave is a ___.
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rarefaction
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