Continental Drift and Plate Tectonics

The theory of continental drift states that all the continents were once part of one big landmass called Pangaea. Who was the scientist that came up with this theory?

• Harry Hess

• Bill Nye

• Alfred Wegener

• Albert Einstein

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Which of the following evidence was used to support theory of continental drift?

• A) Continents fit together like a puzzle

• B) Similar fossils were found on separate continents

• C) Different types of rock, mountain structures, landforms are found all over the world.

• D) All of the above

• E) Only A and B

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Why was Alfred Wegener unable to explain his theory?

• He couldn't explain how the continents drifted.

• He couldn't explain why similar fossils on different continents were separated

• He couldn't explain why similar geological structures found were found on different continents.

• He couldn't explain why the continents fit together like a puzzle.

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NGSS.MS-ESS2-3

If you took rock samples from the Mid-Atlantic Ridge, the youngest rock would be

• located where the plates collide

• located at the place where rocks are furthest from the rift valley

• Located at the center of the ridge (rift valley), where oceanic crust is formed

• none of the above; all the rocks would be the same age

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NGSS.MS-ESS2-3

Seafloor Spreading occurs at a

• convergent boundary

• divergent boundary

• transform boundary

• continental boundary

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NGSS.MS-ESS2-3

This map shows volcanic and earthquake activity. Where is the highest concentration of activity?

• all along the Atlantic Ocean

• all along the Pacific Ocean

• all along the coast of Africa

• all along Indian Ocean

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What is the densest type of crust?

• continental crust

• oceanic crust

• mantle crust

• convergent crust

What is the theory of continental drift?

• New crust is being created at mid-ocean ridges and is pushing away old crust.

• The continents have always stayed in their current location.

• The same fossils of plants and animals can be found on the same continents.

• The continents had once been joined in a single landmass and have since drifted apart.

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NGSS.MS-ESS2-3

How did fossil evidence support Wegener's hypothesis of continental drift?

• Similar fossils are found along continental margins that appear to join together.

• Fossils are found in areas where present-day climate could not have supported the organisms that made the fossils.

• Similar fossils of land-dwelling dinosaurs are found on continents separated by oceans.

• All of the above.

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NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What would you likely find at a convergent boundary between two pieces of continental crust?

• volcano

• mountains

• rift

• ridge

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NGSS.MS-ESS2-3