Tectonic Plates

Explain how subduction leads to volcanic activity, focusing on the role of the denser, sinking plate and the overlying crust.

• The descending plate melts completely and the magma rises to form volcanoes.

• The descending plate causes pressure to build in the mantle, leading to eruptions.

• The sinking plate partially melts, and this melt rises through the overlying crust to form volcanoes.

• The descending plate pushes the mantle upwards without melting, causing physical cracks through which lava emerges.

Tags

DOK Level 3: Strategic Thinking

How can the presence of similar fossils on different continents be explained by the theory of Continental Drift?

• Continental drift suggests random placement of fossils across continents.

• Continental drift has no real impact on the distribution of fossils.

• Continental drift explains similar fossils on different continents by the once-connected landmasses.

• Continental drift predicts that fossils on different continents should be completely different.

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DOK Level 3: Strategic Thinking

Analyze how divergent plate boundaries and mantle convection contribute to new crust formation.

• Divergent boundaries and mantle convection are unrelated in Earth's geology.

• At divergent boundaries, mantle convection helps the upward movement of magma, forming new crust.

• Mantle convection suppresses new crust formation at divergent boundaries by cooling the magma too rapidly.

• While mantle convection occurs, it has a negligible effect on crust formation at divergent boundaries.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-3

Pangea is said to be the ancient supercontinent? True or false

• True

• False

What is continental drift?

• Continents move very quickly

• Continents move very slowly, centimeters per year

• Continents stay still and do not move

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What are the 4 pieces of evidence for continental drift? Check ALL that apply.

• Geographic fit of the continents

• Fossil evidence

• Similar rock types and mountain ranges

• Ancient climate evidence

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NGSS.MS-LS4-1

Who was the scientist who came up with continental drift?

• Charles Darwin

• Isaac Newton

• Rosalind Franklin

• Alfred Wegener

Alfred Wegener believed that the earth moved ___________ per year over millions of years.

• miles

• kilometers

• 100 miles

• centimeters

Tags

NGSS.HS-ESS1-5

What are the 2 continents that fit together like a puzzle?

• South America

• North America

• Africa

• Europe

Tags

NGSS.MS-ESS2-3

The lithosphere is made of the _____ and ______?

• Crust and Mantle

• Crust and core

• Mantle and core

• only the crust