Chapter 11: The Dynamic Planet Quiz

Knowledge of Earth's interior is mostly derived from

• direct sampling of the interior using deep-test wells.

• work in Earth's deepest caverns and caves.

• indirect evidence involving the analysis of seismic waves.

• historic and prehistoric records.

Earth's interior is layered because

• centrifugal force separated out the materials based on weight as the Earth solidified.

• materials became sorted based on density as the Earth solidified.

• materials became sorted based on electromagnetic fields as the Earth solidified.

• the planet was formed due to successive bombardments of cosmic debris.

Which of the following gives the correct sequence of layers in Earth, from the surface to the center?

• crust, inner core, mantle, outer core

• inner core, outer core, mantle, crust

• mantle, crust, inner core, outer core

• crust, mantle, outer core, inner core

The temperature of Earth's interior

• increases with depth so the hottest temperatures are found within Earth's core.

• decreases with depth so the hottest temperatures are found within Earth's crust.

• decreases in the crust, increases in the mantle, decreases in the outer core, and increases in the inner core.

• increases in the crust, decreases in the mantle, increases in the outer core, and decreases in the inner core.

The heat from ________ is the energy that drives plate tectonics.

• tidal motion

• incoming solar radiation

• Earth's extremely hot interior

• friction along plate boundaries

The majority of the Earth's volume is within the

• crust.

• inner core.

• mantle.

• outer core.

Together, the lower and upper mantles represent about ________ of Earth's total volume.

• 10%

• 25%

• 43%

• 80%

Which of the following is correct?

• Continental crust is less dense than oceanic crust and dominated by silica and magnesium.

• Continental crust is denser than oceanic crust and dominated by silica and aluminum.

• Oceanic crust is denser than continental crust and dominated by silica and magnesium.

• The density of continental and oceanic crust is roughly even.

The dominant elements in continental crust are

• silica and aluminum.

• silica and magnesium.

• magnesium and aluminum.

• potassium and iron.

The rigid crust and uppermost mantle are known collectively as the

• asthenosphere.

• lithosphere.

• Moho.

• rigid layer.