Across
- 4. An invisible line that divides the Earth into North and South Hemispheres
- 5. Layer of gas that surrounds a planet
- 7. The invisible line around which Earth rotates
- 8. Earth's period of rotation
Down
- 1. Covers 70% of the Earth's surface
- 2. Earth's natural satellite
- 3. The force that attracts a body towards the centre of the Earth
- 6. The path a planet takes around a star