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GCh. 3 L1-4
Climate, Environment, and Resources
22
Geography
6th Grade
08/30/2011

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Cards

Term
weather
Definition
the short-term changes in the air for a given place and time
Term
climate
Definition
a region's average weather conditions over a long period
Term
prevailing winds
Definition
winds that blow in the same direction over large areas of land
Term
ocean currents
Definition
large streams of surface seawater
Term
front
Definition
the place where two air masses of different temperatures or moisture content meet
Term
monsoons
Definition
seasonal winds that bring either dry or moist air
Term
savannas
Definition
areas of tall grasses and scattered trees and shrubs
Term
steppes
Definition
semidry grasslands or prairies
Term
permafrost
Definition
permanently frozen layers of soil
Term
environment
Definition
surroundings
Term
ecosystem
Definition
a group of plants and animals that depend on each other for survival and the environment in which they live
Term
habitat
Definition
the place where a plant or animal lives
Term
extinct
Definition
to die out
Term
humus
Definition
decayed plant or animal matter
Term
desertification
Definition
the spread of desertlike conditions
Term
natural resource
Definition
any material in nature that people use and value
Term
renewable resources
Definition
resources Earth naturally replaces
Term
nonrenewable resources
Definition
resources that cannot be replaced
Term
deforestation
Definition
the clearing of trees
Term
reforestation
Definition
planting trees to replace lost forestland
Term
fossil fuels
Definition
nonrenewable resources that formed from the remains of ancient plants and animals
Term
hydroelectric power
Definition
production of electricity from waterpower
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