Across
- 1. a natural satellite that orbits a planet
- 5. the time it takes a planet to rotate once on its axis, i.e. 24 hours
- 7. System, the Sun and all the objects that orbit around it, including planets, moons, asteroids, meteoroids and comets
- 8. a group of millions or billions of stars
- 11. any object that orbits another object
- 13. sunlight, sunlight that hits the Earth's surface at a high angle, this type of sunlight is more intense and heats the surface more quickly than indirect sunlight
- 15. a ball of gas that releases light and heat
- 16. model, a model of the Solar System in which Earth is at the centre
- 18. satellite, an object that orbits another object and is not man-made
- 19. an imaginary line halfway between the North and South Poles
- 21. Way, the galaxy in which the Solar System is located
- 22. the motion of one object around another because of gravity
- 23. a geometric shape that looks like an oval or squashed circle
Down
- 2. plane, the imaginary flat surface on which planets orbit the Sun
- 3. planet, a planet made up mostly of rock and metal, with a solid surface
- 4. planet, a planet made up mostly of gases, such as hydrogen and helium
- 6. the time it takes a planet to orbit once around the Sun
- 9. satellite, an object that orbits another object and is man-made
- 10. a half of the Earth, either north or south of the Equator
- 12. an attractive force between any two objects that have mass
- 14. a spinning motion
- 17. model, a model of the Solar System in which the Sun is at the centre
- 20. an imaginary line through an object around which it spins