Two natural satellites orbit Uranus in stable circular orbits. Their orbital periods are shown in the table.
| Natural satellite | Orbital period |
|---|---|
| A | 12 days |
| B | 30 days |
Which statement correctly compares the orbital radius and speed of A with those of B?
A has a smaller orbital radius and travels faster.
A has a smaller orbital radius and travels slower.
A has a larger orbital radius and travels faster.
A has a larger orbital radius and travels slower.
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.