Introduction to Plate Tectonics

Who first proposed the idea of seafloor spreading?

• Alfred Wegener

• Harry Hess

• James Hutton

• Nicolaus Copernicus

Tags

NGSS.HS-ESS1-5

Which of the following is evidence of seafloor spreading?

• matching fossils on either side of the mid-ocean ridge

• evidence of tropical plant fossils on the seafloor

• same rock types in both North America and Africa

• the magnetic striping on the seafloor on either side of the mid-ocean ridges

Tags

NGSS.MS-ESS2-3

Why was the evidence of seafloor spreading so important to the idea of Continental Drift?

• it answer the question for HOW continents could be moving

• it disproved Alfred Wegener's hypothesis of Continental Drift

• It shows how land bridges let prehistoric animals cross the oceans

• all of these are true

Tags

NGSS.MS-ESS2-3

What technological advances led to the acceptance of Wegener's Contienental Drift hypothesis?

• sonar and magnetometers mapped the ocean floor

• satellite communication allowed scientists to share ideas

• computers were used to model tectonic patterns

• fossils of the same organism were found on separate continents

Tags

NGSS.HS-ESS1-5

Which of the following occurs because of convection currents?

• Tectonic plates on the crust move.

• The mantle increases in size.

• Pressure in the crust increases.

• Pressure in the crust decreases.

Tags

NGSS.MS-ESS2-3

What year did Alfred Wegener create his theory?

• 1912

• 1960

• 1945

• 1512

Tags

NGSS.HS-ESS1-5

Which ocean is expanding due to a mid-ocean ridge?

• Indian

• Dead Sea

• Atlantic

• Artic

Tags

NGSS.MS-ESS2-3

During sea floor spreading, molten material rises up from the mantle...

• along the continents

• at the mid ocean ridges

• deep ocean trenches

• at north and south poles

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Earth's plates are...

• constantly moving and changing the face of the earth

• Never moves

• Moves seldom and very fast

• Moves when it feels like it

Tags

NGSS.MS-ESS2-3

How long ago is Pangea believed to have existed?

• 200-300 million years ago

• 1000-2000 years ago

• 10,000-20,000 years ago

• 20-30 billion years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3