Plate Tectonics and the Rock Cycle

Divergent plates move _______ each other.

• away from

• towards

• underneath of

• over-top of

If a process builds up the Earth's surface it is _________.

• Destructive

• Constructive

Where do volcanoes most commonly form?

• Along the equator.

• In Earth's polar regions.

• In the middle of tectonic plates.

• Near tectonic plate boundaries.

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Breaks in the crust called __________ form where plates meet.

• mountains

• rift valleys

• faults

• trenches

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

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

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

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

• convection.

• continental drift.

• subduction.

• conduction.

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

• subduction

• plate tectonics

• deep-ocean trenches

• sea-floor spreading

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Scientists think that convection currents flow in Earth’s

• continents.

• mantle.

• lithosphere.

• inner core.

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

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

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