The wall of a reservoir dam is much thicker at its base than at its top. Which statement explains why?
The pressure of the water is greatest at the top of the dam wall
The density of the water is greatest at the base of the dam wall
The weight of the dam wall is greatest at the top of the dam wall
The pressure of the water is greatest at the base of the dam wall
41 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.