Across
- 3. It is an invisible force which makes us and all other objects fall towards the Earth.
- 6. a contact force which always pushes in the opposite direction to the way an object is moving
- 10. this sphere includes the earth’s crust, landforms, and rocks, soil. It is mostly solid rock is hard and contains many minerals.
- 11. this sphere includes all the water on the Earth, including oceans, lakes, rivers rain and mist.
- 12. animals that don't have a backbone
- 14. any liquid or frozen water that forms in the atmosphere and falls back to the Earth.
- 15. basic unit of life that is responsible for all of life's processes
- 16. animals that have backbones
- 18. rocks that are formed from pre-existing rocks or pieces of once-living organisms.
- 19. the gradual destruction of something by natural forces
Down
- 1. this sphere includes the area that contains all life.
- 2. a blanket of gases, which surrounds the Earth. It is mostly nitrogen and oxygen, which supports life in Earth.
- 4. a very thick layer of dense rocks
- 5. an organism that is made up of only one cell
- 7. the process of a gas changing to a liquid in a water cycle
- 8. preserved remains, or traces of remains, of ancient organisms
- 9. a thin layer of low density rocks
- 13. the breaking down or dissolving of rocks and minerals on Earths surface.
- 17. a rock that is formed through the cooling and solidification of magma or lava.
- 19. the process by which water changes from a liquid to a gas or vapor in the water cycle