Across
- 2. Water not salt water. Only 3% of the water on Earth is fresh.
- 9. the center part of the Earth.
- 11. the process by which rocks break down as a result of chemical reactions.
- 12. the transfer of energy as heat through a material.
- 14. The outer layer of the Earth. A cool rigid layer 15km to 300km thick. It includes the crust and uppermost part of the mantle.
- 15. the part of Earth where life exists.
- 17. liquid to gas.
- 20. the solid, plastic layer of the mantle beneath the lithosphere. It allows the tectonic plates to move on top of it.
- 21. the transfer of energy as electromagnetic waves
- 22. the movement of matter due to differences in density that are caused by temperature variations.
- 23. the layer of the Earth below the crust – makes up 68% of the mass of the Earth
- 25. a molecule made up of three oxygen atoms. It reduces the amount of harmful UV radiation that reaches the Earth
Down
- 1. the thin and solid outermost layer of the earth.
- 3. the layer above the troposphere. Two layers: tropopause and the ozone layer.
- 4. All of the water on or near the Earth’s surface
- 5. Cycle the continuous movement of water into the air, onto land and then back to water sources
- 6. gas to liquid.
- 7. the atmospheric layer closest to the Earth’s surface. It extends about 18 km.
- 8. rain, snow, sleet or hail.
- 10. the solid part of the Earth that consists of all rock, as well as the soils and loose rocks on the Earth’s surface
- 13. the process in which greenhouse gases absorb and reradiate infrared radiation near the Earth
- 16. a process in which the materials of Earth’s surface are loosened.
- 18. the concentration of dissolved salts.
- 19. what the lithosphere is divided into. They glide across the underlying asthenosphere.
- 24. a mixture of gases that surrounds a planet.