29382342
Description
Mind Map by Brigitte Bunge, updated more than 1 year ago
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Created by Brigitte Bunge
over 3 years ago
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3.4 Sound
- describe the production of sound by vibrating sources
- describe the longitudinal nature of sound waves
- describe compression and rarefaction
- state that the approximate
range of audible frequencies
for a healthy human ear is
20 Hz to 20 000 Hz
- show an understanding of the term ultrasound
- show an understanding that a medium is
needed to transmit sound waves
- describe an experiment to
determine the speed of sound in air
- state typical values of the speed of
sound in gases, liquids and solids
- relate the loudness and
pitch of sound waves to
amplitude and frequency
- describe how the reflection of
sound may produce an echo
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