When a submarine submerges from the surface of a lake to a depth of 30 m, the external pressure on its hull increases from 101 kPa to approximately 401 kPa. Change in pressure is observed as the submarine goes deeper.
Which statement explains this increase in pressure?
The density of the lake water increases with depth.
The gravitational field strength increases with depth.
The weight of the column of water above the submarine increases with depth.
The temperature of the water increases with depth.
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.