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Sound Study Guide

The amount of energy in a sound, or the loudness of a sound amplitude
How high or low a sound is; pitch
Sound is a form of: energy
Sound travels in: compressional waves
How fast something vibrates frequency
The distance on a wave measured from crest to crest wavelength
Sound travels slowest through: gases
Sound travels fastest through: solids
The pitch of a sound is closely related to: frequency
High pitch = high frequency
Low pitch = low frequency
High amplitude = loud sound
Low amplitude = soft sound
A sounds frequency is measured in: hertz
The lowest frequency that humans can hear is: 20 hertz
The highest frequency that humans can hear is: 20,000 hertz
A sounds loudness, or intensity, is measured in: decibels
Humans feel pain at ____________ decibels 120
A reflected sound wave creates an: echo
A place with NO matter, such as outer space Vacuum
Bats and whales use _________________ to locate food that they cannot see echolocation
Why do we see lightening before we hear thunder? Light travels much faster than sound
Why does furniture, rugs, and carpet cut down echoes and noise in a house Soft objects absorb sound
Which wave has more waves per second, a high frequency or low frequency sound high frequency
Which wave is louder, a wave with a small amplitude or a high amplitude high amplitude
Name several animals that can hear sounds with very high frequency bats, dogs, cats, dolphin
The rapid back and forth movement of something vibration
In order for sound to occur, something must: vibrate
What is the thin membrane inside your ear that detects vibrations eardrum
A compressional wave that moves outward from its source is: sound
A disturbance moving through a medium such as a solid, liquid, or gas is a: wave
Created by: PRO Teacher lit123