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31 Cards in this Set
- Front
- Back
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period
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the time of a back and forth swing of a pendulum, also depends on the length of a pendulum and the acceleration of gravity
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simple harmonic motion
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the back and forth vibratory motion of a pendulum
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sine curve
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pictoral representation of a wave
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crest
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high points of a wave
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trough
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low points of a wave
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amplitude
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distance from the midpoint of the wave to the crest or trough
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wavelength
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the distance from the top of a wave to the top of the next one
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frequency
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number of vibrations an object makes in a certain time
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hertz
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unit of frequency (one cycle per second=one hertz)
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formula realting frequency and period
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1/frequency = period
1/period = frequency |
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In wave motion...
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it is the disturbance that moves, not the medium through which a wave travels, itself
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Energy transferred by a wave...
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The energy transferred by a wave to a vibrating source is carried by a disturbance in a medium
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Speed of a wave...
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velocity = frequency X wavelength
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Relate frequency, wavelength, and velocity...
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the velocity of sound waves remains the same. However, as the frequency increases, wavelength decreases and vice versa
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Transverse Waves
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Waves that move perpendicular to the direction the wave travels
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Longitudinal Waves
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Waves that move parallel to the direction the wave travels
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electromagnetic radio waves and light waves are...
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Transverse
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waves from musical instruments that include stretched strings are...
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Transverse
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Sound waves are...
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Longitudinal
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Interference pattern
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an arrangement of places where wave effects are increased, decreased, or neutralized
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They occur...
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when waves from different sources arrive at the same point at the same time
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standing wave
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a wave that appears to stay in one place
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Nodes
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the areas of a standing wave in which no movement occurs.
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Antinodes
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Positions on standing waves where the highest amplitudes occur
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The Doppler Effect
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As a wave source approaches, an observer encounters waves with a higher frequency. As the wave source moves away, the opposite happens
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Occurs for...
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Light and Sound
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blue shift
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increase in frequency
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red shift
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decrease in frequency
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bow wave
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occurs when the wave source is moving faster than the waves it produces
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shock wave
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occurs when an object moves faster than the speed of sound
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sonic boom
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sharp crack heard when the shock wave that sweeps behind the wave source reaches listeners
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