Across
- 4. All the water at and near the surface of the earth.
- 6. The strong, lower part of the mantle between the asthenosphere and the outer core
- 7. forces Any natural process that tears down or wears away Earth's surface.
- 10. The portion of the earth's crust that primarily contains granite, is less dense than oceanic crust, and is 20-50 km thick
- 11. the amount of mass in a given volume.
- 12. A usually light colored, less dense, rock that is found in continental crust
- 13. A mixture of gases that surrounds Earth
- 15. A term referring to all water that is temporarily frozen in polar ice caps, snow, permafrost, and glaciers
- 16. a dense sphere of solid iron and nickel at the center of the earth. Source of Earth's interior heat
- 17. Consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
- 18. crust the portion of Earth's crust that is usually below the oceans, thinner and higher in density, made of basalt
Down
- 1. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
- 2. A rigid layer made up of the uppermost part of the mantle and the crust.
- 3. the transfer of heat by the movement of a fluid.
- 5. the outer layer of the earth. thinnest layer
- 6. the layer of the earth between the crust and the core, where convection currents take place
- 8. A dark, dense, igneous rock with a fine texture, found in oceanic crust.
- 9. forces any natural process that builds up Earth's surface
- 12. The mostly solid, rocky part of the Earth; extends from the center of the core to the surface of the crust.
- 14. a layer of molten iron and nickel that surrounds the inner core of the Earth.
- 15. a current caused by the rising of heated fluid and sinking of cooled fluid due to changes in density and gravity