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Physical Science Crossword

Across
The lowest point below the rest position
Opens and closes to control the size of the pupil, gives the eye color
Separates visible light into different colors
The highest point of the wave above rest position
An area where particles in a medium are spaced close together
Has cells that detect light and changes them to electric signals to be sent to the brain
The response of a standing wave to another wave of the same frequency
Cones in the retina do not detect red or green
A unit that compares that intensity of different sounds
Two or more waves combine to create a wave with a smaller displacement
Electromagnetic waves humans can see
A point where a crest or trough occurs midway between two nodes
Shortest wavelength of the electromagnetic spectrum,treats some cancer
The material though which a wave travels
Light energy is absorbed instead of reflected
A point on a standing wave that has no displacement from the rest position
Some light is transmitted and some is scattered
The maximum displacement of the medium from its rest position
Down
Used to examine bones, security in airports
Frequency is measured in cycles per second
Cells in the retina that detect color in bright light
Light wave changes direction after interacting with matter
The rat at which a waves energy flows through a given area
A wave of changing magnetic and electric fields that can travel through empty space or matter
Protects the eye refracts some light
Causes sunburn,kills bacteria
An area where the particles in a medium are spread out
A technique for determining the distance to an object underwater
Sends information over long distances, radar
Any motion that repeats at regular time intervals
Two or more waves overlap and combine together
A physical response to the intensity of sound, modified by physical factors
The frequency of a sound as you perceive it
A point on a standing wave that has no displacement from the rest position