A science centre marks planetary positions along a straight line on the floor. It represents every distance from the Sun using one common scale.
| Planet | Distance from the Sun in millions of km\mathrm{km}km |
|---|---|
| Mercury | 58 |
| Earth | 150 |
| Neptune | 4500 |
The labelled floor plan gives these positions.
| Marker | Position relative to the model Sun |
|---|---|
| Mercury | 17.4 cm to the right |
| Earth | to the left |
| Neptune | to the right |
Which value gives the separation of the Earth and Neptune markers?
13.50 m13.50\ \mathrm{m}13.50 m
13.95 m13.95\ \mathrm{m}13.95 m
13.05 m13.05\ \mathrm{m}13.05 m
1.395 m1.395\ \mathrm{m}1.395 m
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.