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PS CH 16 Vocabulary

Name:______________________________
Date:____________PD:______
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Across
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An image that is formed by the intersection of light rays; a real image can be projected on a screen
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In optics, the process of separating a wave (such as white light) of different frequencies into its individual component waves (the different colors)
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Slow vibrations of frequencies lower than 20 Hz.
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The increase of an object's apparent size by using lenses or mirrors
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A phenomenon that occurs when two objects naturally vibrate at the same frequency.
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Radio detecting and ranging, a system that uses reflected radio waves to determine the velocity and location of objects
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A measure of how high or how low a sound is perceived to be, depending on the frequency of the sound wave
Down
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In optics, a system that consists of two or more plane surfaces of a transparent solid at an angle with each other
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Any sound wave with frequencies higher than 20,000 Hz
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A transparent object that refracts light waves such that they converge or diverge to create an image
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An image from which light rays appear to diverge, even though they are not actually focused there; a virtual image cannot be projected on a screen
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A longitudinal wave that is caused by vibrations and travels through a material medium
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Sound navigation and ranging, a system that uses acoustic signals and echos to determine the location of objects or to communicate
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The rate at which energy flows through a given area of space
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A line in space that matches the direction of the flow of radiant energy