Chapter 5 Plate Tectonics

Which scientist proposed the continental drift hypothesis in 1911?

• Wegener

• Tharp

• Hess

• Richter

At a past point in Earth’s history, the continents were all connected as in the image above.

• TRUE

• FALSE

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What does the theory of continental drift state?

• The continents were once much farther apart and have since been moving together

• There used to be more continents than there are today, but some are now underwater

• Continents move by floating on water

• The continents were all joined together and slowly drifted apart

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NGSS.HS-ESS1-5

SELECT ALL POSSIBLE ANSWERS:

Which of these statements supports continental drift?

• Identical fossils found on different continents

• Continents that fit together like puzzle pieces

• Different ferns on different continents

• Identical rocks found on different continents

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Wegener’s continental drift theory provided evidence that explains how the continents drifted to their current locations.

• TRUE

• FALSE

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Why did most scientists dismiss Alfred Wegener’s hypothesis of continental drift?

• Wegener was interested in what Earth was like millions of years ago

• Wegener used several different types of evidence to support his hypothesis

• They thought the continents would not be deformed

• Wegener could not identify a force that could move the continents

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In 1915, Wegener published a book called The Origin of Continents and Oceans

• TRUE

• FALSE

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Pangea is the name of the supercontinent which Wegener believed existed about 300 million years ago.

• TRUE

• FALSE

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Magnetite in rocks of various ages point to different locations, which suggest that:

• The poles moved significantly

• There are multiple North poles

• The continents have moved

• Everything is stationary

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Which of the following discoveries led to a revival of Wegener’s continental drift hypothesis?

• Discovery of marsupials

• Variation in the orientation of magnetite

• Radioactive dating

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NGSS.MS-ESS2-3