Unit 3.2 Tectonic Plates

Sections of Earth's crust that move slowly due to convection currents

• Volcanoes

• Superposition

• Tectonic Plates

• Mid-ocean ridges

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-3

When one tectonic plate is pushed under another one

• Convection

• Subduction

• Earthquakes

• Mountains

Tags

NGSS.MS-ESS2-3

Tectonic plates move because of ___

• convection currents in the crust

• convection currents in the mantle

• the rotating inner core

• crashing ocean waves

Tags

NGSS.MS-ESS2-3

Convergent Boundary

• two plates collide, pushing together

• two plates move away from each other

• two plates slide past each other in opposite directions

Divergent Boundary

• two plates collide, pushing together

• two plates move away from each other

• two plates slide past each other in opposite directions

Transform Boundary

• two plates collide, pushing together

• two plates move away from each other

• two plates slide past each other in opposite directions

Continental Drift Theory explains...

• how plate boundaries collide or move apart, causing earthquakes

• how older rocks are at the bottom of rock layers and younger rocks are at the top

• how the tectonic plates move, changing the shape of the continents over time

Tags

NGSS.MS-ESS2-3

About 250 million years ago, most of the Earth's land was joined together in a supercontinent called Pangaea.

• True

• False

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Fossil evidence helps to show that separate continents used to be connected millions of years ago.

• True

• False

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NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Older rock layers are found at the _______, and younger rock layers are found at the ______

• top, middle

• top, bottom

• bottom, top

• bottom, middle

Tags

NGSS.MS-ESS1-4