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world geography

geography the study of the earth's surface ad the processes that shape it, the connections between people and their environments.
gis a geographic information system which uses computer technology to collect and analyze data about the earth's surface in order to solve geographic problems
absolute location the position on the earth in which a place can be found.
hemisphere a half of the earth; the equator divides the northern and southern hemispheres; the prime meridian divides the eastern and western hemispheres.
relative location the position of a place in relation to another place.
perception a viewpoint that is influenced by ones owns culture and experience.
character of a place the physical and human characteristics that help to distinguish a place from other places.
formal region a group of places that have a similar attributes for example a political region.
perceptual region a group of places that is defined by people's feelings and attitudes.
functional region a group of places connected by movement for example the region drained by the amazon river and its tributaries.
core the earth's center, consisting of very hot metal that is dense and solid in the inner core and molten,or liquid, in the outer core.
mantle a thick layer of mostly solid rock beneath the earth's crust that surrounds the earth's core.
crust the solid rocky surface layer of the earth.
lithosphere the surface features of the earth including soil rocks and landforms.
atmosphere the layer of gases water vapor and other substances above the earth.
hydrosphere the water contained in oceans lakes rivers and under the ground.
biosphere the world of plants animals and other living things in earth's land and waters.
continent any of the seven large landmasses of the earth's surface.
relief the differences in elevation or height of the landforms in any particular area.
plate tectonics the theory that the earth's outer shell is composed of a number of large unanchored plates or slabs of rock whose constant movement explains earthquakes and volcanic activity.
continental drift theory the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride.
ring of fire a ring of volcanic mountain's surrounding the pacific ocean.
weathering the chemical or mechanical process by which rock is gradually broken down eventually becoming soil.
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 usually when water and carbon dioxide cause a breakdown of the rock.
acid rain rain whose high concentration of chemicals usually from industrial pollution pollutes water kills plant and animal life and eats away at the surface of stone and rock.
erosion the movement of weathered materials including gravel soil and sand usually caused by water wind and glaciers.
sediment particles of soil and rock carried and deposited by water wind or ice.
loess fine-grained mineral-rich loam dust or silt deposited by the wind.
glacier a huge slow-moving mass of snow and ice.
moraine a ridgelike mass of rock gravel sand and clay carried and deposited by a glacier.
Created by: jonathanhart