A sound wave in water is a longitudinal wave consisting of alternate compressions and rarefactions.
Explain how a rarefaction differs from a compression.
Explain, in terms of rarefactions, what is meant by:
Explain, in terms of rarefactions, what is meant by: 2. the frequency of the sound.
Dolphins emit high-frequency sound waves underwater for echolocation. The speed of sound in seawater is 1500 m/s1500\text{ m/s}1500 m/s.
A dolphin emits a pulse of sound with a wavelength of 0.012 m0.012\text{ m}0.012 m. Calculate the frequency of the sound.
State why this sound cannot be heard by human beings.
The pulse of sound hits a target and is reflected back to the dolphin. The dolphin receives the reflected pulse 0.080 s0.080\text{ s}0.080 s after it was emitted. Calculate the total distance travelled by the pulse of sound during this time.
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.