Plate Tectonics Unit Review

Front

What is the correct order (starting from the surface) of Earth’s layers? Options: crust, outer core, inner core, mantle; mantle, outer core, inner core, crust; crust, mantle, outer core, inner core; outer core, inner core, crust, mantle

Back

crust, mantle, outer core, inner core

Front

In sea-floor spreading, molten material rises from the mantle and erupts

Back

along mid-ocean ridges.

Front

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

Back

subduction.

Front

Most geologists think that the movement of Earth’s plates is caused by _______

Back

convection.

Front

The geological theory of _______ states that pieces of Earth’s lithosphere are in constant, slow motion.

Back

plate tectonics

Front

A place where two plates slip past each other, moving in opposite directions, is known as a _______

Back

transform boundary

Front

Scientists think that convection currents flow in Earth’s

Back

mantle.

Front

The place where two plates come together is known as a _______

Back

convergent boundary.

Front

Where would the oldest rock be found?

Back

O

Front

How is it possible for new crust to be formed without increasing the surface area of the Earth?

Back

Crust is destroyed at the same time it is created.