Across
- 6. Layer of gases above Earth’s surface
- 8. The time a planet takes to rotate once completely on its own axis
- 9. An irregular rocky object in orbit around the Sun between the orbits of Mars and Jupiter
- 11. The sun and all the planets, satellites, asteroids, comets and other bodies revolving around it
- 12. A meteoroid that enters Earth’s atmosphere, usually creating a bright streak across the sky as it burns up; a shooting star
- 14. Something that satisfies a particular purpose or need
- 17. Used in agriculture to provide water to crops
- 21. Breaking down of rocks by the action of rain, wind, chemicals and living things into smaller particles
- 23. Not able to hold any more water vapour
- 24. The dropping of sediments from moving water, air or ice
- 25. Rainwater that falls on hard surfaces that then runs off
- 27. When Earth blocks sunlight from reaching the moon
- 28. The amount of water vapour in the air
- 29. Places where underground water comes to the surface
Down
- 1. A ball of ice, dust and rock that orbits the Sun in a highly elliptical orbit
- 2. Roughly spherical ball of rock or gas that orbits the Sun
- 3. Substances found in rocks
- 4. All plant and animal matter found on Earth
- 5. The sun and all the planets, satellites, asteroids, comets and other bodies revolving around it
- 7. The time a planet takes to revolve once around the Sun
- 10. Any water falling from the sky
- 13. One complete orbit around the Sun
- 15. Object in orbit around another larger object
- 16. The process of water soaking into the soil
- 18. The evaporation of water from plants
- 19. The recycling of water from ocean to atmosphere to land and back to the ocean
- 20. The total or partial obscuring of one celestial body by another
- 22. Path a planet takes around a star, or the path a moon or satellite takes around a planet
- 25. On Earth, summer, autumn, winter, spring; caused by the tilt of a planet’s axis
- 26. The line connecting the North Pole with the South Pole. Earth rotates around this axis