Earth's Interior Section Review

Which statements describe what geologists study? Check all that apply.

• The solid parts of Earth

• Oxygen and other gases that surround Earth

• The inside of Earth

• The forces that affect Earth

• The rocks and minerals that make up Earth

Which statements about Earth’s crust are true? Check all that apply.

• The crust includes soil, rock, and water.

• There are three different kinds of crust.

• The crust is thickest under the ocean.

• The ocean crust is made of young rocks.

• The ocean crust is denser than continental crust.

Which sources do scientists use to study the interior of Earth? Check all that apply.

• Earth’s orbit

• Core samples

• Earthquakes

• S waves

• Rock composition

During an earthquake, geologists use a machine called a _______ to study seismic waves.

• Seismograph

• Drilling Rig

• Magnetometer

P waves can pass through both solid and molten rock, but S waves can pass only through _____ rock.

• Molten

• Tarry

• Solid

Which event would most likely occur if Earth did not retain the heat from its formation?

• The inner core would liquefy.

• Seismic waves would move the crust.

• The Earth’s magnetic field would disappear.

• The asthenosphere and outer core would solidify.

A scientist uses a special instrument to measure the depth of Earth’s crust. He measures one location that is 65 kilometers deep. Where is this section of crust most likely located?

• Below a vast ocean

• Below a deep canyon

• Below a mountain range

• Below an island volcano

Which phrases are true of only the mantle? Check all that apply.

• Made of three layers

• Has a tarry layer

• Made of two layers

• Has a molten outer layer

• Has a molten outer layer

Use the drop-down menus to select the part of Earth best described by each phrase.

May help create Earth’s magnetic field

• 3

• 4

• 5

Use the drop-down menus to select the part of Earth best described by each phrase.

Can be thick or thin, depending on location

• 1

• 2

• 3