8.9B Plate Boundaries ETYNTK

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What is a convergent boundary?

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A convergent boundary is where two tectonic plates collide, often forming mountains or causing one plate to subduct beneath another.

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

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What geological features are commonly formed at convergent boundaries?

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Features such as folded mountains, volcanic arcs, and deep ocean trenches are commonly formed at convergent boundaries.

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NGSS.MS-ESS2-2

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What is a divergent boundary?

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A divergent boundary is where two tectonic plates move apart, leading to the formation of new crust, often seen at mid-ocean ridges.

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

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What is a transform boundary?

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A transform boundary is where two tectonic plates slide past each other horizontally, causing earthquakes.

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NGSS.MS-ESS3-2

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What is a mid-ocean ridge?

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A mid-ocean ridge is an underwater mountain range formed by plate tectonics at divergent boundaries.

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NGSS.MS-ESS2-3

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What is subduction?

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Subduction is the process where one tectonic plate moves under another, often leading to volcanic activity.

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

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What is an island arc?

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An island arc is a chain of volcanic islands formed at a convergent boundary, typically where an oceanic plate subducts beneath another oceanic plate.

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NGSS.MS-ESS2-3

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What is the San Andreas Fault?

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The San Andreas Fault is a transform fault in California, known for its significant earthquake activity.

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NGSS.MS-ESS3-2

NGSS.MS-ETS1-1

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What is seafloor spreading?

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Seafloor spreading is the process by which new oceanic crust is created at mid-ocean ridges as tectonic plates diverge.

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

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What are volcanic islands?

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Volcanic islands are landforms created by volcanic activity, often found at convergent boundaries where subduction occurs.

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NGSS.MS-ESS2-1