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Physical Science Vocab Crossword

Across
A unit that compares that intensity of different sounds.
The maximum displacement of the medium from its rest position
Number of complete cycles in a given time.
Very little or no light is transmitted.
An area where the particles in a medium are spread out.
Frequency is measured in cycles per second.
Longitudinal waves
Useful to examine bones, security in airports.
Radiates heat, makes things warmer.
Electromagnetic waves humans can see.
The response of a standing wave to another wave of the same frequency.
A point on a standing wave that has no displacement from the rest position.
Some light is transmitted and some is scattered.
Shortest wavelength of the electromagnetic spectrum.
Light energy is absorbed instead of reflected.
Cells in the retina that detect color in bright light.
Separates visible light into different colors.
Has cells that detect light and changes them to electric signals to be sent to the brain.
Two or more waves overlap and combine together.
Down
The bending of waves around a barrier or through an opening.
The lowest point below the rest position.
The largest wavelength of the electromagnetic spectrum, broadcast television signals.
The time required for one cycle, a complete motion that returns to its starting point.
Protects the eye refracts some light.
A point on a standing wave that has no displacement from the restposition.
Light bounces off a surface.
Causes sunburns, kills bacteria
The distance between a point on one wave and the same point on the next cycle of the wave.
The highest point of the wave above the rest position.
Opens and closes to control the size of the pupil, gives the eye color.
Light wave changes direction after interacting with matter.
A physical response to the intensity of sound, modified by physical factors.
Light is transmitted easily.
Cells in the retina that detect shape in dim light.
Sends information over long distances.
The material through which a wave travels.
A technique for determining the distance to an object under water.