Comets and planets orbit the Sun under the influence of gravitational forces.
Which row in the table correctly describes the shape of a comet's orbit and the position of the Sun within this orbit?
| Shape of orbit | Position of the Sun | |
|---|---|---|
| A | circular | at the centre of the orbit |
| B | circular | not at the centre of the orbit |
| C | elliptical | at the centre of the orbit |
| D | elliptical | not at the centre of the orbit |
Row A
Row B
Row C
Row D
100 exam-style questions on CIE IGCSE Physics 6.1 The Earth and the Solar System, covering 6.1.1a Rotation of the Earth, the seasons and the Moon, 6.1.1b Average orbital speed, 6.1.2a Contents of the Solar System, 6.1.2b Formation of the Solar System, 6.1.2c Gravitational field strength of a planet, and 6.1.2d Orbits and gravitational attraction. Each one has a worked solution and a mark scheme showing where the marks go.