Unit D - Plate Tectonics Review

It is about ____________ to the center of the earth.

• 6,400 km

• 640 km

• 64 km

• 64,000 km

Which layer of the earth is the THICKEST?

• Crust

• Mantle

• Outer Core

• Inner Core

The ______________ is the THINNEST layer inside the earth.

• Crust

• Mantle

• Outer core

• Inner core

About how old is the earth?

• 450 years old

• 450,000 years old

• 4.5 million years old

• 4.5 billion years old

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

The idea that the continents were once joined together to form a large land mass called Pangea is known as _____________.

• continental drift

• Pangea theory

• plate tectonics

• All of the above

We use the word ___________________ to refer to all of the crust and the upper mantle.

• Lithosphere

• Continent

• Earth

• Metamorphic rock

What was Alfred Wegener's evidence that the continents have moved?

• Edges of continents look like they fit like a puzzle

• Matching fossils found on separate continents

• Mountains with matching rock layers found on separate continents

• All of the above

The idea that the surface of the earth is made up of large plates that have moved over geological time is the theory of ______________.

• Continental drift

• Plate tectonics

• Pangea

• Divergent boundaries

As the lithospheric plates move, large sections of rock break and shift position releasing energy waves. This causes ______________.

• Earthquakes

• Thunderstorms

• Convection currents

• Electricity

Which of the following statements is TRUE?

• The earth's lithosphere moves around but is never destroyed.

• Old lithosphere falls into the ocean and is destroyed by ocean currents.

• Old lithosphere is destroyed and new lithosphere is formed at plate boundaries.

• New lithosphere forms on the tops of mountains.