A satellite is needed to take photographs of the whole surface of the Earth.
Which type of orbit should be used, and why?
A polar orbit, because the Earth turns beneath the satellite as it orbits
A polar orbit, because the satellite stays above one point on the Earth
A geostationary orbit, because it stays above one point on the Earth
A geostationary orbit, because it passes over every part of the Earth
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.