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20 Cards in this Set
- Front
- Back
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Deep-Ocean Trench
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A deep Valley along the ocean floor
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Delta
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A landforma made of sediment that is deposited where a river flows into an ocean or lake.
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Density
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The amount of mass per unit volume in a given area
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Desert
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An area that receives less than 25 cm of rain per year
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Dew Point
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The temperature where condensation begins
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Divergent Boundary
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A plate where two plates move away from each other
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Dormant
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A volcano that does not show signs of erupting
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Drought
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A long period of water shortage
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Earthquake
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A shaking that results from rocks below the Earth's srfact
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El Nino
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An abnormal climate event that occurs every 2 to 7 years in the Pacific Ocean
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Element
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A suubstance composed of a single kind of atom
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Epicenter
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The point on Earth's surface directly above an earthquake focal point
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Erosion
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The process by which soil is moved by ice, wind, gravity, and water
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Evacuate
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To move away temporarily
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Equator
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An imaginary line that circles the Earth halfway between the North and South poles
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Extrusive Rock
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igneous rock that forms from lava on Earth's surfact
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Extinct
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Said of a volcano that is unlikely to erupt agian
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Fault
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A break in Earth's crust
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Focus
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The point under Earth's surface where pressure causes an earthquake
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Footwall
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The block of rock that forms the lower half of a fault
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