Different objects in the Solar System travel in different orbits.
The Table gives information about the orbits of three objects.
Table
| Object | Object it orbits | Shape of orbit |
|---|---|---|
| the Moon | nearly circular | |
| a comet | the Sun | |
| the Earth | nearly circular |
Complete the Table.
Name the force that keeps all of these objects in their orbits.
Explain why the speed of a comet increases as it moves closer to the Sun.
80 exam-style questions on Edexcel GCSE Physics 7.1 The Solar System and gravity, covering 7.1.1 Weight and g on different bodies in space, 7.1.2 The Solar System, 7.1.3 Changing ideas about the Solar System, 7.1.4 Orbits of moons, planets, comets and satellites, and 7.1.5 Gravity and orbital motion. Each one has a worked solution and a mark scheme showing where the marks go.