A submarine ascends from the ocean floor towards the surface. A pressure gauge on the exterior of the submarine measures the surrounding water pressure as it rises.
Which statement describes how and why the pressure changes as the submarine ascends?
The density of the sea water increases so the pressure decreases.
The depth of the submarine below the sea surface decreases so the pressure decreases.
The height of the submarine above the sea bed increases so the pressure increases.
The temperature of the sea water increases so the pressure increases.
188 exam-style questions on CIE IGCSE Physics Pressure, covering Pressure. Each one has a worked solution and a mark scheme showing where the marks go.