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42 Cards in this Set
- Front
- Back
theory
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A possible explanation or unproved assumption
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continental drift
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The continuing movement of continental plates
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fault
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A crack in Earth's crust along which movement occurs
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magma
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Melted rock within Earth
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lava
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Magma that has broken through Earth's crust and is on the surface
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weathering
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The wearing away of rock through some kind of motion
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glacier
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A thick mass of slow-moving ice
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erosion
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The carrying away of land by forces of nature
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deposition
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The process of dropping, or depositing, sediment in a new location
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delta
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A triangle-shaped piece of land built from soil deposited at the mouth of a river
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trench
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A deep ocean valley
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current
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A giant stream of ocean water
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tidal wave
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A giant ocean wave
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tide
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The regular, rhythmic rise and fall of ocean waters
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water cycle
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The circulation of water from Earth's surface to the atmosphere and back
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tributary
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A small river that feeds into a larger river
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river system
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A river and all its tributaries
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drainage basin
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The land drained by a river system
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rift
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A crack in the Earth's crust
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reservoir
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A human-made lake
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latitude
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The distance north or south of the equator
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equator
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An imaginary line that circles Earth halfway between the North Pole and the South Pole. The line divides Earth into the Northern Hemisphere and the Southern Hemisphere
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longitude
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The distance east or west of the prime meridian
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prime meridian
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The meridian marked 0 longitude. It runs north and south through Greenwich, England
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climate
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The kind of weather a place has over a long period of time
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temperature
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Neither very hot nor very cold
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tropic
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An area on Earth at or near the equator, between the Tropic of Cancer and the Tropic of Capricorn
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altitude
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Elevation
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rain shadow
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The drier side of a mountain
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vegetation
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Plant life
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rain forest
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A wet land with thick vegetation and tall trees that block the sunlight
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arid
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Very dry with little rainfall
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population distribution
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The way people are spread out in different places throughout the world
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environment
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Surroundings
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irrigation
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The use of connected ditches, canals, or pipes to move water to dry areas
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desertification
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The long-term process in which fertile land is changed into desert
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drought
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A long period of time when little or no rain falls
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migration
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The movement of people from one place to another
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urbanization
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The movement of people from the countryside to the cities
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metropolitan area
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A city and all the suburbs around it
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thematic map
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A map with a specific theme or topic, such as population, culture, or history
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population density
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The average number of people living on a square unit of land
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