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Sound

Teacher: Corpening
Across
A wave that requires a medium to travel
Bending of waves due to a change in speed
Sound waves with frequencies below 20 hertz
The number of waves produced in a given time
The maximum displacement for a wave, energy of the wave
A unit used to measure the loudness of a sound
The distance between crests of waves
How high or low a sound is
Interference that occurs when two waves combine to make a wave with a smaller amplitude, singing off key
Addition of two waves when the crest of one overlaps the crest of another so their individual affects add together
Lowest point of a wave
When a sound waves are bounced back from an object ie echo
A form of energy that does not need a medium
How flexible a media is
Occurs when an object causes a wave to change direction and bend around it
How tightly packed molecules are
A region in a sound wave where there are fewer air particles than normal
Down
Addition of two waves when the crest of one overlaps the crest of another so they add together.
Something that is produced when matter vibrates and travels as a longitudinal wave
To move rapidly back and forth
Highest point of a wave
When sound waves combine in such a way that the resulting disturbance is greater than either wave alone ie. harmonic singing
Part of a longitudinal wave where the particles of the medium are close together
Describes a sound of a frequency too high to be heard by normal human ear--above 20000 hertz
Equal to one cycle per second. how frequency of waves are measured
Material through which a wave travels