Across
- 4. envelope of gases around Earth
- 8. the lowest region of the atmosphere
- 10. wearing away of rock by water, wind or ice
- 11. the layer of the atmosphere above the troposphere
- 12. rocks formed when heat or pressure is applied to other rocks (changed)
- 14. all the water in all levels
- 15. the interplay of both the rock and water cycles
Down
- 1. formed by the cooling and crystallization of molten rock
- 2. laying down of sediment by wind, flowing water, sea or ice
- 3. the part of the Earth's climate system that includes solid precipitation, snow, sea ice, lake and river ice, icebergs, glaciers and ice caps, ice sheets, ice shelves, permafrost, and seasonally frozen ground.
- 5. also known as the lithosphere-the rock
- 6. physical rather than biological; non-living
- 7. a naturally occurring community of flora and fauna occupying an ecosystem
- 9. all the living organisms
- 13. plates that move under Earth's crust