Understanding Plate Tectonics

What is the Theory of Plate Tectonics?

• A theory about the water cycle

• A theory about the extinction of dinosaurs

• A theory about the formation of stars

• A theory explaining the movement of Earth's plates

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NGSS.MS-ESS2-3

What causes the tectonic plates to move?

• Wind currents in the atmosphere

• Magnetic fields

• Convection currents in the mantle

• Ocean currents

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NGSS.MS-ESS2-3

Where do most earthquakes and volcanoes occur?

• In deserts

• In the middle of tectonic plates

• At the North Pole

• At plate boundaries

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NGSS.MS-ESS3-2

What is created at mid-ocean ridges?

• New crust

• Lakes

• Rivers

• Mountains

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NGSS.MS-ESS2-1

What happens at a convergent plate boundary?

• Plates slide past each other

• Plates remain stationary

• One plate subducts under another

• Plates move away from each other

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What type of boundary is the San Andreas Fault?

• Divergent

• Convergent

• Transform

• Complex

What is a transform plate boundary?

• Where plates slide past each other

• Where plates move away from each other

• Where plates are stationary

• Where plates collide

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NGSS.MS-ESS2-3

What is the stress type at a divergent boundary?

• Tension

• Bending

• Compression

• Shearing

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What forms at an ocean to ocean convergent boundary?

• Deserts

• Mountain chains

• Rivers

• Island arcs

What is the result of ocean to continental convergence?

• Desert formation

• Mountain chains and volcanic activity

• Lake formation

• River creation

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3