| Term | Definition |
|---|
| atmosphere | the layers of gases immediately surrounding |
| hydrophere | the waters comprising the Earth's surface, including oceans, seas, rivers, lakes, and vapor |
| crust | the thin rock rock layer making up the Earth's surface |
| lithosphere | the solid rock portion of the Earth's surface |
| mantle | a rock layer about 1,800 miles thick that is between the Earth's crust and the Earth's core |
| tectonic plates | enormous moving peices of the earths lithosphere |
| volcano | a natural event formed by gases and tectonic movment |
| earthquake | violent movement in the lithosphere |
| folds | when the plates physically combine together |
| faults | A fracture in the earth's crust |
| erosion | The result of weathering on matter, created by the action of wind, water, ice, or gravity |
| mechanical weathering | Natural process that breaks rock into smaller peices |
| chemical weathering | A process that changes rock into a new substance through interactions among elements in the air or water and the mineral rock. |
| glaciers | A large ice mass that moves slowly down a mountain or over land. |
| continents | Landmasses located above water on earth. |
| water cycle | The circulation of water between the atmosphere, the oceans, and the earth. |
| ground water | Water held in the pores of rocks. |
| cinder cones | Balls of lava eject from the volcano then falling to earth forming a cone shape. |
| transform faults | plates slide pas on another. |
| convergent faults | plates collide, causing either one plate to dive under the other or the edges of both plates to crumple. |
| divergent faults | plates move apart, spreading horizontally. |
| evaporation | changes into vapor and makes into clouds |
| precipitation | falling water droplets in the form of rain, sleet, snow, or hail. |
| condensation | the act or process of reducing a gas or vapor to a liquid or solid form |
| runoff | something that drains or flows off |
| storage | a place, as a room or building, for storing |
| biosphere | the part of the earth's crust, waters, and atmosphere that supports life |
| magnetic field | a region near a magnet, electric current |
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