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18 Cards in this Set

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  • Back
CRUST
the thin, outermost layer of the earth, or the uppermost part of the lithosphere
MANTLE
the layer of the earth between the crust and the core
CORE
the central,spherical part of the Earth below the mantle.
INNER CORE
the solid, dense center of the Earth
OUTTER CORE
the liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core
LITHOSPHERE
the outermost,rigid layer of the mantle that consists of the crust and the rigid upper part of the mantle
ASTHENOSPHERE
the soft layer of the mantle on which pieces of the lithosphere move
TECTONIC PLATES
a piece of the lithosphere that moves around on top of the asthenosphere
CONTINENTAL DRIFT
the theory that continents can drift apart from one another and have done so in the past
MESOSAURUS
a small, aquatic reptile
GLOSSOPTERIS
an ancient plant species
PANGAEA
is Greek for "all Earth"
SEA-FLOOR SPREADING
the process by which new oceanic lithosphere is created at mid-ocean ridges as older materials are pulled away from the ridge
CONVECTION
the transfer of thermal energy by the circulation or movement of a liquid or a gas
PLATE TECTONICS
the theory that the Earth's lithosphere is divided into thectonic plates that move around on top of the asthenosphere
CONVERGENT BOUNDARY
the boundary between two colliding tectonic plates
DIVERGENT BOUNDARIES
the boundary between two tectonic plates that are moving away from each other
TRANSFORM BOUNDARIES
the boundary between two tectonic plates that are sliding past each other horizontally