During a test flight, instruments carried by an uncrewed atmospheric research capsule record these readings.
| Height above the Earth's surface (km) | Atmospheric pressure (kPa) |
|---|---|
| 0.0 | 101 |
| 1.5 | 85 |
| 4.0 | 62 |
| 7.0 | 41 |
A model used to interpret the readings assumes that the atmosphere has the same density at all heights. The model predicts that atmospheric pressure decreases by the same amount for each 1.0 km increase in height.
Describe how the readings can be used to decide whether the model is suitable. Explain the pattern in the readings and suggest a range for the atmospheric pressure at a height of 10.0 km.
132 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids, covering 15.2.1 Atmospheric pressure and height, 15.2.2 Pressure in fluids, 15.2.3 Pressure, force and area, 15.2.4 Pressure and depth, 15.2.5 Pressure in liquids: depth and density, 15.2.6 Upthrust, and 15.2.7 Floating and sinking. Each one has a worked solution and a mark scheme showing where the marks go.