Geosphere Review

2. a recurring current in the mantle that occurs when hotter, less dense material rises, cools, and then sinks again.
3. The thin and solid outermost layer of the Earth above the mantle
6. the rock portion of the Earth.
9. the layer of the earth between the crust and the core
10. The outer core is responsible for the Earth's ____________________.
13. A dense sphere of solid iron and nickel at the center of Earth
14. A layer of molten iron and nickel that surrounds the inner core of Earth
15. The mantle convection current is believed to be one of the driving forces behind _____________ movement.

1. Crust that is the portion of earth's crust that is less dense primarily granite
4. a rock that forms from compressed or cemented layers of sediment
5. a type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
7. just the exterior portion of the overall geosphere
8. Crust that is thinner, more dense, younger crust making ocean floor
11. a type of rock that forms from the cooling of molten rock at or below the surface
12. The central part of the earth below the mantle