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21 Cards in this Set
- Front
- Back
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landforms
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Physical features on the earth's surface, such as mountains and valleys.
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weathering
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Process of breaking rock into soil, sand and other tiny particles. Happens over a period of time through the wind or water.
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erosion
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Process of moving sediment from one place to another.
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crust
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The outermost layer of the Earth's surface. It is made of rock and very thin compared to the other layers.
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mantle
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Layer of rock beneath the Earth's crust. This layer is very hot and soft.
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core
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Center of the Earth's surface. It is the hottest layer of the Earth that has an outer part and an inner part. Great pressure keeps this layer very solid.
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plates
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Rigid blocks of crust and upper mantle rock. The movements of these cause movement on the Earth's surface.
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magma
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Hot, soft rock from Earth's mantle. This substance builds up along the cracks of the crust, and forms long chains of mountains under the ocean.
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volcano
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A mountain formed by lava and ash.
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earthquake
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Shaking of the ground caused by a sudden release of energy in Earth's crust.
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faults
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Breaks in the middle of a plate, or places where pieces of the crust move.
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contintal drift
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Theory of how Earth's continents move over its surface.
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Pangea
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The "supercontinent" that covered the earth 225 million years ago.
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fossils
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Remains or traces of past life found in sedimentary rock.
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cinders
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Charred bits of rock or ashes.
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crater
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A bowl-shaped depression.
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eruption
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A volanic explosion or large flow of lava.
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lava
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Hot melted rock that flows from a volcano.
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magma
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Hot melted rock underneath the earth's surface.
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molten
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Made liquid by heat.
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summit
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The top of a mountain.
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