Plate Tectonics & Crustal Features

What are Tectonic plates?

• Large moving pieces on Earth's surface that are made of rock.

• where two plates divide

• The inner core of the earth

• where magma rises up and solidifies

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What is continental drift?

• Made of igneous rock

• Where two plates collide

• Theory that all of earths continents were once joined together in a singe, huge land mass and then started drifting away from each other.

• The process by which new oceanic crust forms when when magma rises up.

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What is pangaea?

• Huge supercontinent that existed millions of years ago,

• Where two plates slide

• Where two plates divide

• Where two plates collide

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What are divergent Plate Boundaries?

• Where two plates divide

• Where two plates collide

• Where two plates slide

What are Convergent Plate Boundaries?

• Where two plates divide

• Where two plates collide

• Where two plates slide

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NGSS.MS-ESS2-2

What are Transform Plate Boundaries?

• Where two plates divide

• Where two plates collide

• Where two plates slide

What is seafloor spreading?

• Large pieces of lithosphere that move.

• Layer made up of the crust and uppermost mantle

• The super continent that existed millions of years ago

• Process by which new oceanic crust forms when magma rises up and solidifies at the mid-ocean ridge.

What is subduction?

• where one tectonic plate sinks below another

• Where two plates slide

• Where two plates divide

• Where two plates collide

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How do tectonic plates move?

• Wind

• Convection currents

• Water

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As plates pull apart, what happens?

• Loose rock material fills the empty space.

• New plate material fills the empty space so there is no space left.

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NGSS.MS-ESS2-2

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