GCSE Edexcel Physics Ultrasound: (a) Sound travels through the ai

Question

(a) Sound travels through the air as longitudinal waves.
Describe how the air particles move when a sound wave passes.

(b) Elephants call to each other using infrasound.
People cannot hear these infrasound calls.
Which of the following statements is the reason that people cannot hear infrasound?
Put a cross (X) in the box next to your answer.

A  the amplitude of infrasound is too big
B  the frequency of infrasound is too low
C  the speed of infrasound is too fast
D  the wavelength of infrasound is too short

(a) Sound travels through the air as longitudinal waves - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1

Worked Solution & Example Answer:(a) Sound travels through the air as longitudinal waves - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1

Describe how the air particles move when a sound wave passes.

Which of the following statements is the reason that people cannot hear infrasound?

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