STAAR REVIEW: 8TH GRADE SCIENCE 1ST SEMESTER

Front

Exists between two tectonic plates that are moving away from each other

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Divergent Boundary

Front

Landform created by two diverging continental plates

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Rift Valley

Front

An underwater mountain system formed by diverging oceanic plates

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Mid-Ocean Ridges

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The formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side

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Seafloor Spreading

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Tectonic plates that move toward one another

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Convergent

Front

Takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced or sinks due to gravity into the mantle

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Subduction

Front

Tectonic plates that slide past each other

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Transform

Front

A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action

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Earthquake

Front

Formed at the boundary of two converging continental tectonic plates

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Mountain

Front

Land feature that forms when one tectonic plate slides beneath another plate at a subduction zone

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Trench