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7th Grade Geography Chapter 2
Terms for "Planet Earth"
23
Geography
7th Grade
09/17/2011

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Term
plate tectonics
Definition
earth's surface is divided into several large plates which move
Term
erosion
Definition
process of moving rocky material or sediment to another place
Term
terraces
Definition
horizontal ridges farmers build on steep hillsides for farming
Term
topography
Definition
shape, height, arrangement of landforms in a certain place
Term
renewable resources
Definition
can be replaced by natural processes, such as soil and forests
Term
fossil fuels
Definition
non-renewable resources of petroleum, coal, and natural gas
Term
minerals
Definition
non-renewable resource that includes metals, rocks, and salts
Term
non-renewable resources
Definition
cannot be replaced naturally after being used
Term
geothermal energy
Definition
heat from the Earth's interior - a clean source of power
Term
nuclear power
Definition
renewable resource that doesn't pollute, but leaves deadly waste material
Term
hydroelectric power
Definition
production of electricity by waterpower
Term
oceans
Definition
the large area of water that covers seventy percent of the earth's surface
Term
tributary
Definition
any smaller river that flows into a larger river
Term
flood plain
Definition
created when a river floods its banks and deposits sediment
Term
delta
Definition
forms were a river carries sediment all the way to the ocean
Term
acid rain
Definition
air pollution combined with moisture
Term
weathering
Definition
process of breaking down landforms and creating new ones
Term
subduction
Definition
when plates collide, one goes under the other
Term
fault
Definition
fractured surface in Earth's crust where a mass of rock is in motion
Term
water cycle
Definition
circulation of water from Earth's surface to the atmosphere and back
Term
weather
Definition
condition of the atmosphere at a certain time and place
Term
climate
Definition
weather conditions in a certain area over a long period of time
Term
rain shadow
Definition
dry area on the side of a mountain opposite the wind
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