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liam science
liam science
21
Science
5th Grade
03/02/2012

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Term
contour line
Definition
lines on a topographic map that indicates areas with the same elevation,or hieght above sea level
Term
crust
Definition
the thin,rocky outer layer of Earth that makes up the continents and the ocean floor
Term
deposition
Definition
constuctive forc in which sediments that have been moved from one place are dropped or realeased in another place
Term
erosion
Definition
destructive force in which pieces of rock are moved by water,wind,or moving ice
Term
sediment
Definition
small pieces of rock
Term
topographic map
Definition
ma that shows the shape of surface features and thier elevations above sea level
Term
weathering
Definition
destructive force that breaks down rock into smaller pieces
Term
core
Definition
Earth's innermost structure
Term
dome mountains
Definition
mountains that form when magma pushes up on Earth's crust but does not break through
Term
earthquake
Definition
violent shaking of Earth's crust as built-p energy realeases
Term
epicenter
Definition
point on Earth's surface directly above the focus of an earthquake
Term
fault
Definition
crack in Earth's surface along which movement takes place
Term
fault block mountains
Definition
mountains that form along fault lines where blocks of rock fall, are thrust up, or side
Term
focus
Definition
point underground where the faulting in an earthquake occurs
Term
fold mountains
Definition
mountains that form where two plates collide and force layers of rock into folds
Term
fossil
Definition
phisical remains or traces of a plant or animal that lived long ago
Term
lithosphere
Definition
shell formed from Earth's solid upper mantle and crust
Term
magma
Definition
melted rock below Earth's surface;called lava at the suface
Term
mantle
Definition
thick layer of Earth's structure just below Earth's crust
Term
plate tectonics
Definition
theory that giant plates of crust are moving slowly across Earth's surface
Term
seismic waves
Definition
waves of energy sent through Earth's crust when parts of the crust move suddenly
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