Sound MCQs and Structure Cambridge IGCSE O level Physics 0625 0972 5054 Lesson 55 part b
Автор: IGCSE and A Levels By Zain
Загружено: 2021-11-10
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Sound MCQs and Structure
3.4 Sound
Core
•• Describe the production of sound by vibrating
sources
•• Describe the longitudinal nature of sound waves
•• 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
•• Relate the loudness and pitch of sound waves to
amplitude and frequency
•• Describe how the reflection of sound may
produce an echo
Supplement
•• Describe compression and rarefaction
•• State typical values of the speed of sound in
gases, liquids and solids
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