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Transcript
Science: Constructive and
Destructive Forces Vocabulary
landforms
A natural land shape or feature, such
as mountains, plains, or valleys.
Examples:
Mountains, hills, valleys, plains, canyon
sand dune
A hill of sand, made and shaped by wind
delta
An area of new land at the mouth
of a river, formed from sediments
carried by the river
fault
A break in the earth’s crust
volcano
A mountain that forms as molten rock
flows through a crack onto the Earth’s
surface
magma
Melted, or molten, rock beneath Earth’s surface
lava
Molten rock that reaches Earth’s surface
earthquake
A movement of the ground caused
by a sudden release of energy in
the Earth’s crust.
seismograph
A machine that records movement in the
Earth’s crust
deposition
Dropping, or depositing, sediment
into a new location
erosion
The process of moving sediment by
wind, moving water, or ice
weathering
The process of wearing away ROCKS
by natural means
dams
Dams stop the flow of a river
levee
A wall of earth or concrete built
along the banks of a waterway