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20 Cards in this Set

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