The Table shows information about the Moon and a weather satellite. Both orbit the Earth.
Table
| Object | Distance from the Earth in km\text{km}km | Time for one orbit |
|---|---|---|
| the Moon | 384 000384\ 000384 000 | 27 days |
| weather satellite | 850 | 100 minutes |
Give one similarity between the Moon and the weather satellite.
Give two differences between the Moon and the weather satellite.
Calculate how many times the weather satellite orbits the Earth in one day.
The weather satellite is in a polar orbit.
Explain how it can take pictures of the whole of the Earth's surface in one day.
50 exam-style questions on OCR GCSE Physics 8.3 Beyond Earth, covering 8.3.1 Red-shift and the expanding universe, 8.3.2 Evidence for the Big Bang model, 8.3.3 Formation of the Sun and stellar equilibrium, 8.3.4 Radiation emitted by hot bodies, 8.3.5 The solar system and satellites, 8.3.6 Gravity and circular orbits, 8.3.7 Orbital radius and orbital speed, 8.3.8 Radiation balance and the temperature of the Earth, and 8.3.9 Seismic waves and exploring hidden structures. Each one has a worked solution and a mark scheme showing where the marks go.