Plate Tectonics

Which layer is plastic-like and allows the crust to flow over it?

• Lithosphere

• Asthenosphere

• Mantle

• Outer Core

Which layer of the Earth is responsible for the Earth’s magnetic field?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer is solid and made of iron and nickel?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer has strong convection currents, which are responsible for the crust’s

Movement?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer is made up of two different kind of layers, oceanic and continental?

• Crust

• Mantle

• Outer Core

• Inner Core

What rock type is found most readily in the crust?

• Gold

• Quartz

• Gabbro

• Granite

Originally the Continental Drift Theory was not well received by other scientists. Why?

• There was a competing theory at the time which was more believable.

• There was no data showing the continents ever moved.

• The scientists didn’t know the force responsible for moving the continents.

• The scientist presenting the data was unreliable.

According to Wegener’s hypothesis of continental drift,

• Earth’s surface is made up of seven major landmasses.

• the continents do not move.

• Earth is slowly cooling and shrinking.

• the continents were once joined together in a single landmass.

What is Pangaea?

• the name of a German scientist

• the name of the supercontinent that existed millions of years ago

• another name for continental drift

• the name of an ancient fossil

How do fossils of the Cynognathus, found in Africa and S. America, support Wegener’s theory?

• The animals must have swam over

• The animals could have crossed on an ice bridge

• Africa and S. America were once joined.

• The animals evolved and flew over the ocean.