Across
- 1. where tectonic plates meet. They are the cracks between the plates.
- 4. from a gas to a solid
- 7. cells single cells that control the opening and closing of the stomata
- 8. opening on the underside of leaves through which water transpires
- 9. the areas of the planet that are habitable for life.
- 11. in animals, the process of burning sugar in oxygen to release energy. Carbon dioxide is produced, as well.
- 14. the hot interior of the earth.
- 15. liquid to gas
- 16. effect greenhouse gasses absorb heat and trap it in earth’s atmosphere. Greenhouse gasses act as a blanket for the earth.
- 18. the process in which plants breath in carbon dioxide and take in water, then ‘cook’ it in sunlight to produce sugar and oxygen.
- 20. process of squeezing deposited sediment.
Down
- 2. the layers of air surrounding the planet.
- 3. water storage water that is stored underground in rocks called aquifers
- 5. evaporation of water through plants.
- 6. plates sections of the earth’s crust.
- 10. the process of dropping off and building up layers of sediment.
- 12. when fossil fuels are burned in oxygen. It produced carbon dioxide.
- 13. all of the water on the planet
- 17. process of hardening compacted sediment into rock.
- 19. fuel coal, oil and natural gas. Created from sedimentary rock created from organic matter such as plants in ancient swamps.
- 20. the outer cool layer of the earth.
- 21. hot iron and nickel center of the earth
