Across
- 2. The amount of matter an object contains, measured in 'kg'
- 4. The force of attraction exerted by a large mass e.g. a planet
- 8. One of four times of the year (winter, spring, summer or autumn)
- 10. A star and all the objects that travel in orbit around it
- 12. The force acting on an object due to the pull of gravity
- 13. a model which proposes that the Sun is at the centre of the solar system
Down
- 1. A moon that orbits another body, usually a planet
- 3. An eclipse that occurs when the Moon passes directly behind the Earth into its shadow
- 5. An object that people have made and launched into orbit using rockets
- 6. The appearance of the Moon changing shape in the sky as it revolves around the Earth
- 7. A model which proposes that the Earth is at the centre of the solar system
- 9. The time taken for a planet to turn once on its axis
- 11. An eclipse that occurs when the Moon passes between the Sun and Earth, and fully or partially blocks the Sun