Earth Science A Unit 2 quiz

The process whereby dense material sinks and low-density material rises to form a layered planet is called what?

• protoplanetion

• radioactivity

• planetesimal bombardment

• differentiation

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What two processes are the major sources of the earth’s interior heat, which is the energy source for earthquakes, volcanic eruptions, and plate tectonic motion?

• residual heat from earth’s formation and radioactive decay

• sunlight and the spinning of the earth

• friction and magnetism

• convection currents and magnetic reversals

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Earth’s interior heat is the engine that powers which of the following?

• earthquakes

• volcanoes

• movement of the plates of the crust

• all of the above

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Scientists think that the convection currents, which may be responsible for the movement of plates, circulate through the what?

• crust/lithosphere

• asthenosphere/ mantle

• outer core

• inner core

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What does the earth’s interior heat originate from?

• the decay of radioactive materials

• the residual heat from the formation of the earth

• neither a or b

• both a and b

If the earth’s interior were to suddenly cool, what would happen to plate tectonic motion?

• It would eventually stop.

• It would continue unchanged.

• It would accelerate.

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• It would reverse direction.

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Heat from the interior of the earth is an energy source for plate motion.

• True

• False

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The motion of the earth’s plates creates all of the following except for which?

• mountain ranges

• convection currents in the outer core

• earthquake and volcanic zones

• mid-ocean ridges, trenches, and rift valleys

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What does the collision of one plate with another form?

• a convergent boundary

• a transform boundary

• a rift valley

• a divergent boundary

What is the plate boundary at which one plate is pushed beneath another called?

• a rift valley

• a transform fault boundary

• a subduction boundary

• a divergent boundary