A ship uses a sonar system to measure the depth of the ocean. It sends sound waves downwards into the water and detects the signal that returns. Which wave behavior is responsible for the sound waves returning to the ship?
The sound waves are absorbed.
The sound waves are diffracted.
The sound waves are reflected.
The sound waves are refracted.
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.