Q 3.3 Earth's Dynamics

Alfred Wegener thought that the coastline of South America matched the coastline of Asia. 

• True

• False

Scientists at the time rejected Wegener’s hypothesis of continental drift because he could not explain how or why Earth’s continents move. 

• True

• False

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NGSS.HS-ESS1-5

At first, a lack of explanation for continental drift prevented many scientists from accepting that a single supercontinent called ____ once existed.

• Pangaea

• Wegener

• Glossopteris

• Gondwasia

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NGSS.HS-ESS1-6

Matching ____ on different continents are evidence for continental drift.

• river syste

• rock structures

• weather patterns

• wind systems

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NGSS.HS-ESS1-5

The map shows where glaciers existed 250 million years ago. Which explanation is supported by the data in the map?

• Glaciers formed in the locations shown on the map because of a change in climate that caused the southern hemisphere to experience an ice age.

• Glaciers at one time covered most of the continents in the world, but the glaciers melted and the areas on the map are places where glaciers still remain.

• There is evidence of glaciers in the areas identified on the map because the current climate in those areas still supports glacier formation.

• There is evidence of glaciers in the areas identified on the map because the continents were once located near a polar region, but then over time the continents moved apart.

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NGSS.HS-ESS2-4

What are two pieces of evidence used to support the continental drift hypothesis?

• Continents have the same borders.

• Continents have the same volcanoes.

• Continents have the same fossils.

• Continents have the same animals and plants today.

The youngest rocks on the ocean floor are located ____.

• near continents

• at mid-ocean ridges

• far from mid-ocean ridges

• near Asia

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NGSS.HS-ESS1-5

Which of the following best explains the age of oceanic crust and ocean-floor features like mid-ocean ridges and ocean trenches?

• seafloor spreading

• continental drift

• subduction

• crystallization

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NGSS.HS-ESS2-1

____ are formed when two continental plates collide.

• Volcanoes

• Strike-slip faults

• Mountain ranges

• Rift valleys

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NGSS.MS-ESS2-3

Volcanoes can form over a plume, or rising current of hot mantle. As a tectonic plate slowly moves over a plume, a volcano will form and then become extinct as it moves away from the hot spot. Then the next volcano will form. If the hot spot shown made all the islands in the figure, is the plate pictured below moving toward you or away from you?

• The plate is moving toward me.

• The plate is moving away from me.

• There is no way to tell.

• It is stationary.

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1