Earth's Layers Quiz

Name the four main layers of the Earth from the outside to the inside.

• Crust, Mantle, Outer Core, Inner Core

• Crust, Outer Core, Mantle, Inner Core

• Mantle, Crust, Outer Core, Inner Core

• Inner Core, Outer Core, Mantle, Crust

Which layer of the Earth is the thinnest?

• Crust

• Mantle

• Outer core

• Inner core

Which of the following best describes the Earth's layers from outside to inside?

• Crust, mantle, outer core, inner core

• Crust, outer core, mantle, inner core

• Mantle, crust, outer core, inner core

• Outer core, crust, mantle, inner core

Which layer of the Earth is responsible for the planet's magnetic field?

• Crust

• Mantle

• Outer core

• Inner core

Compare and contrast the crust under the oceans and the crust under the continents.

• The oceanic crust is thinner and denser than the continental crust, which is thicker and less dense.

• The oceanic crust is thicker and less dense than the continental crust, which is thinner and denser.

• Both oceanic and continental crusts have the same thickness and density.

What causes earthquakes?

• Changes in air pressure

• Movement of tectonic plates

• Changes in the Earth's magnetic field

• Rotation of the Earth

What causes the movement of tectonic plates?

• Wind

• Ocean currents

• Convection currents in the mantle

What is the primary element found in the Earth's core?

• Oxygen

• Silicon

• Iron

• Carbon

What is the state of matter of the inner core?

• Solid

• Liquid

• Gas

• Plasma

What is the primary composition of the Earth's crust?

• Liquid iron

• Solid rock

• Molten rock

• Gas