| Term | Definition |
|---|
| formal region | A group of places that have things in common |
| functional region | A group of places connected by movement |
| sediments | soil sand and gravel carried and deposited by the wind |
| weathering | the chemical or mechanical process by which rock is broken down and made into soil |
| glaciers | A huge slow-moving mass of snow and ice |
| moraines | A ridgelike mass of rock, grvel, sand, and clay carried and deposited by a glacier |
| mechanical weathering | The actual breaking up or physical weakening of rock by forces such as ice and roots |
| chemical weathering | The process by which the actual chemical structure of rock is changed |
| plate tectonics | THe theory that the earths outer shell is composed of a number of large unanchored plates whose movement causes earthquakes and volcanic activity |
| continental drift | The idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride |
| G.I.S. | Geographic information system |
| absolute location | the position on the earth in which a place can be found |
| relitive location | the position of a place in relation to another place |
| Biosphere | The world of plants, animals, and other living things on earths land's and waters |
| hydrosphere | The water contained in oceans, lakes, rivers, and under the ground |
| sonar | SOund NAvigation and Ranging system |
| volcanoes | An opening in the earths crust from which molten rock escapes to the surface |
| 5 geography themes | location, place, region, movement, and Human-enviorment interaction |
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