Earth's Interior

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

• seismic waves

• rock samples

• liquid iron

• volcanic eruption

What is the correct order (starting from the survace) 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

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

• continents

• layers

• ridges

• trenches

Which of Earth's layers is the thickest?

• the crust

• the mantle

• the outer core

• the inner core

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

Which part of Earth contains plates?

• hydrosphere

• atmosphere

• core

• lithosphere

Tags

NGSS.MS-ESS2-3

The upper layer of Earth is broken into more than a dozen continents that move very slowly in various directions

• True

• False

Answer explanation

Plates

Tags

NGSS.MS-ESS2-3

Mantle material rises in convection currents because heated materials become more dense.

• True

• False

Answer explanation

less

Tags

NGSS.MS-ESS2-1

NGSS.MS-PS1-4

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

• True

• False

Answer explanation

Seismic waves

The outermost layer of Earth is called the mantle.

• True

• False

Answer explanation

crust