Which statement describes a simple model of the Earth's atmosphere?
A thin layer of air of the same density at every altitude
A thick layer of air that is densest far above the Earth
A thick layer of air that is wider than the Earth itself
A thin layer of air that is densest at the Earth's surface
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.