Earth's Layers

Which layer is composed mostly of iron?

• Z

• Y

• V

• X

Which layer is the densest?

• Z

• X

• W

• V

Which layer is the thinnest?

• V

• Z

• Y

• X

Which layer is the solid, inner core?

• W

• V

• X

• Y

Which layer is the liquid outer core?

• Y

• Z

• V

• W

Are layers X and Z cooler than V?

• Yes

• No

• They are the same temperature.

Which layer has convection currents where the hot, less dense magma rises and the cooler, dense magma sinks?

• inner core

• outer core

• mantle

• crust

Which layer is the most diverse containing silica, oxygen, aluminum, and magnesium?

• crust

• mantle

• outer core

• inner core

Which layer of Earth is composed mainly of liquid iron and nickel? (This layer creates Earth's

magnetic field, which protects Earth from solar wind.)

• crust

• mantle

• outer core

• inner core

What layer of Earth contains the plates that cause earthquakes and volcanic eruptions?

• The asthenosphere which is solid with the core.

• The asthenosphere which contains the crust and mantle.

• The lithosphere which contains the crust and outer core.

• The lithosphere which contains the crust and upper mantle.