Continental Drift and Seafloor Spreading

Who created the hypothesis of Continental Drift?

• Harry Hess

• Alfred Wegner

• Sir Isaac Newton

• Albert Einstein

What is this a picture of?

• Plate Tectonics

• Continental Drift

• Pangea

Tags

NGSS.HS-ESS1-5

What does the hypothesis of Continental Drift state?

• 200 million years ago, the continents were joined as one and they have remained that way.

• 200 million years ago, the continents were joined as one and they have slowly moved to their current locations.

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NGSS.HS-ESS1-5

What evidence was used to support Continental Drift?

• Continents fitting together like a puzzle

• Fossils of Ferns on Antarctica

• Similar mountain ranges on different continents

• All of the above

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NGSS.HS-ESS1-5

Why did no one believe Wegener's hypothesis of Continental Drift?

• He could not explain HOW the continents moved.

• His data was incorrect.

• He did not use the right technology to gather data

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NGSS.HS-ESS1-5

In the Atlantic Ocean where is the youngest seafloor located?

• Towards the edges of the eastern and western continents.

• Towards the North and South Pole.

• Along the Mid-Ocean Ridge.

• Young seafloor is located randomly throughout the ocean.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

What type of plate boundary is the Mid-Ocean Ridge?

• Divergent

• Convergent

• Transform

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

What two words are BEST used to describe how the seafloor spreads?

• Volcanoes and convection

• Tsunamis and convection

• Earthquakes and convection

• Magma and convection

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

True or false: The tectonic plates will never stop moving

• True

• False

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

How do scientists figure out the age of the seafloor?

• They research it from ancient sea maps that trading vessels used in the 1700s.

• They use seismographs, the depth, and the locations of earthquakes to calculate the age.

• They look at differences in magnetic polarity of the seafloor to determine the age.

• They take drill ships to many locations in the oceans and collect and date the rock samples.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1