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Question 45

A tuning fork is struck and vibrates in air to produce sound waves.

a.

Sound waves are longitudinal waves. State the term used to describe:

  • (i) a region where the air molecules are pushed close together.
  • (ii) a region where the air molecules are spread furthest apart.
[2]
b.

Describe how the movement of the vibrating prong of the tuning fork produces:

  • (i) the region of high pressure / closely-spaced molecules.
  • (ii) the region of low pressure / widely-spaced molecules.
[2]
c.

State the effect on the loudness and pitch of the sound from the tuning fork when:

  • (i) the amplitude of the vibration decreases, but the frequency remains constant.
  • (ii) the frequency of the vibration decreases, but the amplitude remains constant.
[4]
Markscheme

Sound Questions

  1. IGCSE
  2. /Physics
  3. /Sound

295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.

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