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PS CH 16 Vocabulary

Name:______________________________
Date:____________PD:______
Across
An image that is formed by the intersection of light rays; a real image can be projected on a screen
In optics, the process of separating a wave (such as white light) of different frequencies into its individual component waves (the different colors)
Slow vibrations of frequencies lower than 20 Hz.
The increase of an object's apparent size by using lenses or mirrors
A phenomenon that occurs when two objects naturally vibrate at the same frequency.
Radio detecting and ranging, a system that uses reflected radio waves to determine the velocity and location of objects
A measure of how high or how low a sound is perceived to be, depending on the frequency of the sound wave
Down
In optics, a system that consists of two or more plane surfaces of a transparent solid at an angle with each other
Any sound wave with frequencies higher than 20,000 Hz
A transparent object that refracts light waves such that they converge or diverge to create an image
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
A longitudinal wave that is caused by vibrations and travels through a material medium
Sound navigation and ranging, a system that uses acoustic signals and echos to determine the location of objects or to communicate
The rate at which energy flows through a given area of space
A line in space that matches the direction of the flow of radiant energy