An underwater volcanic eruption produces extremely loud sound waves that can travel thousands of kilometers through the ocean.
Which statement about the sound waves from the eruption is not correct?
A hydrophone (underwater microphone) sealed inside a completely evacuated chamber (vacuum) would still detect the sound.
Hydrophones located further from the eruption detect the sound later than those closer to it.
The amplitude of the sound waves decreases as they travel further from the source.
The sound waves travel faster through the ocean water than through the air above the ocean.
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.