Plate Tectonics

Who developed the theory that the Earth was once a giant landmass?

• Alfred Willis

• Alfred Wegener

• Alfred White

• Alfred Whynot

The name of the giant landmass, which means “all Earth” is called....

• Pangea

• Plate Tectonics

• Continental Drift

• Pan

Wegner’s theory that Pangea broke into pieces and drifted apart to form our present continents.

• True

• False

Which evidence that helps support Alfred Wegener’s idea of Continental Drift are

• Fossils

• Evidence from rocks and mountains

• Glacial deposits

• All of the above

• None of the above

The Earth’s moving plates

• Pangea

• Continental Drift

• Continental and Oceanic Crust

• Plate Tectonics

Plate Tectonics is the theory that....

• Helps explain fossils

• Helps explain HOW the plates move

• Helps explain glacial deposits

• Helps explain evidence from rocks and mountains

There are _____ major plates in the United States.

• 1

• 3

• 5

• 7

The hot fluid part of the mantle that moves the plates by convention currents.

• Plate Tectonics

• Pangea

• Asthenosphere

The movement of gases or fluids caused by differences in temperature

• Subduction

• Convection Currents

• Asthenosphere

The process by which the crust plunges back into the Earth, melts, and becomes part of the mantle again

• Subduction

• Convection Currents

• Pangea