Plate Tectonics Review

The theory that states all of earth's continents were once connected as a supercontinent that slowly drifted apart.

• Plate Tectonics

• Sea-Floor Spreading

• Continental Drift

• Convection Currents

The name of Alfred Wegner's supercontinent

• Pangea

• Gondawanaland

• Eurasia

• Lurasia

The theory of continental drift was rejected because

• there wasn't enough evidence

• the force that moved the continents could not be explained

• Wegener was a known alcoholic

• The evidence could not be verified.

The technology that was used to map the ocean floor during the 1940's

• Submersibles

• X-rays

• Night Vision

• SONAR

Which of the following is the best description of the mid-ocean ridge?

• Is a volcanic ridge that runs through the Atlantic Ocean

• Is an underwater mountain range that runs through the Pacific Ocean

• Is an underwater volcanic mountain range that runs through all of Earth's oceans

• Is an dormant volcano in the Indian Ocean.

Which of the following is the best explanation of the process of sea-floor spreading?

• Volcanoes are adding rock to the ocean floor creating mountain ranges.

• New ocean floor is being created at the Mid-Ocean Ridge and being pushed toward the continents due to convection currents in the mantle.

• Old ocean floor is being eroded away.

• Sea floor spreading was proven to be false due to plate tectonic theory.

Which of the following is NOT evidence to support continental drift theory?

• Fossil Evidence

• Climate Evidence

• Puzzle Like-Fit

• Drilling Samples

Which layer of Earth is considered to be the "plates"?

• Crust

• Mantle

• Asthenosphere

• Lithosphere

Which layer of the Earth are convection currents found?

• Crust

• Mantle

• Inner Core

• Outer Core

A crack in Earth's crust is known as

• Fault

• Plate

• Ridge

• Volcano