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24 Cards in this Set
- Front
- Back
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what type of waves are sound waves?
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mechanical
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the change in pitch due to a moving wave source is called what?
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the doppler effect
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If vibration is at right angles to the direction that the wave is said to be a what?
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transverse wave
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a ________ object emits light waves
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luminous
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when waves from diffrent sources cross paths, the resulting effect is called what?
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interference
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_________ is a unit of intencity
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Candela
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If the vibration occors in in the same direction taht the wave is trveling, the wave is called what?
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a Longitudinal wave
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It is important to remeber that radio waves are not what?
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sound waves
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Light is an electromagnetic wave and ________ is a mechaniscal wave.
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sound
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The _________ is the height of the wave
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amplitude
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waves carry ______ from one place to another.
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energy
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What unit do we use to measure the loudness of sound?
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decibals
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What do sound waves need in order to travel?
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a Medium
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What are the colors of the visible sectrum from highest to lowest frquency?
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Violet, Indigo, blue, geen, yellow, orange, and red
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Scientists measure frequency in units called what?
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hertz
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How do you distinguish an illuminated object from a luminous object?
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An illumante object reflects light; a luminous object is a source of light
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Do gamma rays have lower or higher frequency than microwaves?
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HIGHER!
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Which waves have shorter wavelengths; radio waves or X-rays?
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X-rays
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Sunlight is a combination of _________ , _________ and ___________ radiation.
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Visible, Ultra-violet and infrared
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microwaves are also used in what?
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radar
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the distance that a wave rises or falls from its normal rest position is called the _____________ of the wave.
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amplitude
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what is the formula for calculating speed of a wave?
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V=F Wavelength
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Define electromagnetic waves.
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Energy in wave from that is capable of trveling through a vacuum: radio waves, microwaves, ect.
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lowest point in a wave
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trough
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