Earth's Interior

Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of

• seismic waves

• rock samples

• liquid iron

• volcanic eruption

Geologists obtain indirect evidence about Earth's interior by

• measuring pressure differences at Earth's surface.

• estimating temperature inside Earth.

• directly looking under the many layers.

• recording and studying seismic waves.

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

Earth's inner core is

• a dense ball of solid metal.

• a layer of molten metal.

• a layer of hot rock.

• a layer of rock that forms Earth's outer skin.

Using data from seismic waves, geologists have learning that Earth's interior is made up of several

• continents.

• layers.

• ridges.

• trenches.

Earth's mantle is

• a layer of molten metal.

• a layer of hot rock.

• a dense ball of solid metal.

• a layer of rock that forms Earth's outer skin.

Earth's magnetic field results from movements in the

• mantle.

• outer core.

• inner core.

• crust.

To study Earth's interior, geologist often rely on indirect methods, such as evidence from FOSSILS.

• True

• False

Pressure INCREASES from Earth's surface toward the center of Earth.

• True

• False

The outermost layer of Earth is called the MANTLE.

• True

• False