Earth's Interior

Rocks from which source would most likely contain the highest percentage of iron-bearing minerals?

• a continental margin

• a valley

• a mountain

• the ocean floor

Tags

NGSS.MS-ESS3-1

Which statement best describes why scientists cannot study Earth's inner core directly?

• the magnetic fields it generates interfere with signals from instruments

• it is too deep inside Earth to reach by drilling

• it does not transmit seismic waves

• it consists of highly radioactive materials

If scientists could sample Earth's inner core, they would most likely find _____.

• liquid metal

• partly molten rock

• solid metal

• liquid rock

Tags

NGSS.HS-ESS2-3

Why do scientists divide Earth's core into an outer core and an inner core?

• They have a different chemical composition

• they were formed in different geologic eras

• they are divided by a layer of partly molten material called the mesosphere

• they exist in different states of matter

Which is the correct order of Earth's structural layers, from the outer layer to the center?

• lithosphere, asthenosphere, mesosphere, outer core, inner core

• asthenosphere, mesosphere, lithosphere, outer core, inner core

• outer core, inner core, mesosphere, asthenosphere, lithosphere

• lithosphere, outer core, asthenosphere, inner core, mesosphere

Which is the outermost compositional layer of Earth?

• crust

• outer core

• mantle

• aesthenosphere

Which of fhe following best describes the makeup of the lithosphere?

• continental crust only

• continental crust and oceanic crust only

• continental crust, oceanic crust, and the uppermost part of the mantle

• continental crust, oceanic crust, and all of the mantle

Which statement best describes why scientists cannot study Earth's inner core directly?

• It does not transmit seismic waves.

• It is too deep inside Earth to reach by drilling.

• It consists of highly radioactive materials.

• The magnetic fields it generates interfere with signals from instruments.

What do the lithosphere and upper mantle have in common?

• They are similar ages (over 4 billion years old).

• They consist of similar ratios of silicon to iron.

• They have similar textures (brittle).

• Convection cells within them move tectonic plates at Earth's surface.

Geologists classify a certain section of Earth as lithosphere. Which of the following could it be?

• the inner core

• the outer core

• a convection cell

• a tectonic plate

Tags

NGSS.MS-ESS2-3