Across
- 1. Summer, Spring, Autumn and Winter are all classified as what?
- 4. A large arrangement of billions of stars and planets
- 6. A rare event where and object in space blocks another view
- 7. The galaxy our Solar System is in
- 9. Jupiter and Saturn are both classified as what kind of planet?
- 10. A rock or natural object that orbits a planet
- 12. The large star in the centre of the heliocentric model
- 14. The time it takes a planet to completely orbit the Sun
- 15. ______ model; the Sun is placed in the centre
- 16. The motion of an object around another; caused by gravity
Down
- 2. All of the planets and the Sun exist in what system?
- 3. The time it takes for a planet to rotate once
- 5. An attractive force between any objects that have mass
- 8. Uranus and Neptune are classified as what kind of planet?
- 9. ______ model; the Earth is placed in the centre
- 11. The representation of an idea, object or system
- 13. A large rock in space that revolves around the Sun