Convection and Mantle

Question 1

Which statement best reflects what is known about the theory of plate tectonics?

Revolt · Accepted Answer

Earth's lithosphere is composed of about a dozen large plates and a few smaller plates that move across Earth's surface a few centimeters a year.

Question 2

This happens as one plate sinks under another plate, down into Earth's.

Revolt · Accepted Answer

mantle

Question 3

The general area where this process is occurring is called a.

Revolt · Accepted Answer

subduction zone

Question 4

As the descending plate bends downward, a long, steep, narrow depression in the seafloor where one plate sinks under another plate may develop; this is called a(an).

Revolt · Accepted Answer

ocean trench

Question 5

These features result in some of theparts of the seafloor.

Revolt · Accepted Answer

deepest

Convection and Mantle Answers

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