Continental Drift & Sea Floor Spreading

Which of the following scientists developed the hypothesis of Continental Drift?

• Wegener

• Hess

• Einstein

• Churchill

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Originally, the Hypothesis of Continental Drift was not well received by other scientists. Why?

• There was a competing theory at the time which was more believable.

• There was no data showing the continents ever moved.

• The scientists didn't know the force responsible for the moving continents.

• The scientist presenting the data was unreliable.

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NGSS.MS-ESS2-3

The three animals, mesosaurus, lystrasaurus, and cynognathus represent what type of evidence that the continents actually moved?

• zoological evidence

• glacial evidence

• evidence of climate change

• fossil evidence

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Look at this image. Which explanation best summarizes the hypothesis shown in the figure?

• The present continents will gradually move to form a single landmass called Pangaea.

• The continents were once a large landmass name Pangaea, which broke apart and gradually drifted to the present-day locations of the continents.

• The continents were once a large landmass, but the north and south magnetic poles pulled the continents apart toward the poles

• The continents were once a large landmass, but the ocean levels rose, and these oceans separate today's continents.

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NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

Look at this image, which shows changes at mid-ocean ridges. The highlighted section shows how one location of the sea floor moves over time. Which process is demonstrated in this image?

• Continental drift

• earthquakes

• plate collisions

• sea-floor spreading

Tags

NGSS.MS-ESS2-3

Which of the following statements provided early evidence supporting the hypothesis of continental drift?

• interlocking shapes of present-day coastlines

• mid-ocean ridges generating new sea floor

• matching magnetic patterns on the sea floor

• dating of rocks showing increase in age as distance form mid-ocean ridge increases

There are long mountain belts that divide the sea floor and generate new sea floor as magma rises and erupts onto Earth's surface. What are these mountain belts known as?

• magnetic poles

• mid-ocean ridges

• ocean trenches

• subduction zones

___________ is the process by which one tectonic plate is pulled beneath another plate.

• subduction

• ridge push

• mid-ocean ridge

• convection

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NGSS.MS-ESS2-3

What did scientists use to map the oceans floor?

• Echo-location

• Sonar

• Space Shuttles

• Animals

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NGSS.MS-PS4-2

What is one piece of evidence of seafloor spreading?

• age of the rocks

• old rock pushes new rock to the side

• scientist can use sonar

• subduction

Tags

NGSS.MS-ESS2-3