Layers of the Earth Quiz

What are the three main layers of the Earth?

• Crust, Mantle, Core

• Atmosphere, Hydrosphere, Lithosphere

• Biosphere, Hydrosphere, Atmosphere

• Stratosphere, Troposphere, Exosphere

Describe the crust, mantle, and core in terms of their composition and thickness.

• The crust is composed of solid rocks and is the thinnest layer; the mantle is made of semi-solid rock and is thicker; the core is composed of iron and nickel and is the thickest layer.

• The crust is made of liquid magma and is the thickest layer; the mantle is composed of solid rocks and is the thinnest layer; the core is made of gases and is thicker.

• The crust is composed of gases and is the thickest layer; the mantle is made of liquid magma and is the thinnest layer; the core is composed of solid rocks and is thicker.

• The crust is made of iron and nickel and is the thickest layer; the mantle is composed of gases and is the thinnest layer; the core is made of semi-solid rock and is thicker.

As you go deeper into the Earth, how do temperature and pressure change?

• Both temperature and pressure increase.

• Temperature increases, but pressure decreases.

• Temperature decreases, but pressure increases.

• Both temperature and pressure decrease.

What are tools that geologists use to discover the makeup of Earth’s interior?

• Seismic waves

• X-ray machines

• Microscopes

• Telescopes

What is the evidence for the existence of an inner core?

• Seismic wave studies

• Magnetic field observations

• Gravitational measurements

• Surface rock analysis

Convection is a process involving the movement of which of the following?

• Solids

• Liquids

• Gases

• Plasma

Give an example of convection.

• Boiling water

• Melting ice

• Burning wood

• Rusting iron

What is the thinnest layer of the Earth?

• Crust

• Mantle

• Outer Core

• Inner Core

As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

• The would all increase
• The would all decrease.
• Nothing, the layers are made of the same material throughout
• Temperature would decrease, but pressure and density would increase

Which layer is shown in red?

• crust

• mantle

• outer core

• inner core