A sealed, highly flexible silicone storage pouch containing a small volume of air is attached to the exterior of a deep-sea research submersible.
The submersible descends from the surface of the ocean down to the sea floor at a depth of 4000 m.
Explain what happens to the volume of the air inside the pouch as the submersible descends.
54 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids (physics only). Each one has a worked solution and a mark scheme showing where the marks go.