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5.C1 Mrs Jensen
The Changing Earth
17
Science
5th Grade
10/31/2011

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Term
atmosphere
Definition
the layer of gases that surrounds the earth and contains the clouds
Term
hydrosphere
Definition
the water part of the earth's surface
Term
lithosphere
Definition
the rigid outer shell of the earth
Term
crust
Definition
the top layer of the earth, above the mantle
Term
mantle
Definition
the middle layer of the earth, between the crust and the core
Term
core
Definition
the center part of the earth, beneath the mantle
Term
plate tectonics
Definition
a theory stating that the earth's surface is broken into plates that move
Term
plate
Definition
a large section of the earth's surface made of the crust and the rigid top part of the mantle
Term
weathering
Definition
the process that breaks down and changes rocks
Term
erosion
Definition
the moving of weathered rock and soil
Term
deposition
Definition
the dropping of materials moved by erosion
Term
rock cycle
Definition
the ways that rocks change from one form to another
Term
igneous rock
Definition
rock formed from molten rock that comes from deep within the earth
Term
sedimentary rock
Definition
rock formed when sediments are pressed or cemented together
Term
metamorphic rock
Definition
rock formed when igneous or sedimentary rock is changed by heat or pressure
Term
mineral
Definition
a natural, nonliving solid with a definite chemical structure
Term
sequencing
Definition
putting in the correct order
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