Layers of the Earth

Which layer of the Earth is the thinnest?

• Crust

• Mantle

• Outer core

• Inner core

Oceans and other bodies of water are found on which layer of Earth?

• Outer core

• Crust

• Mantle

• Inner core

Which two elements are primarily found in Earth's innermost layers?

• Oxygen and Silicon

• Iron and Nickel

• Magnesium and Aluminum

• Carbon and Hydrogen

Tags

DOK Level 1: Recall

Describe the relationship between pressure and depth beneath Earth's surface.

• Pressure decreases with depth.

• Pressure remains constant with depth.

• Pressure increases with depth.

• Pressure fluctuates with depth.

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DOK Level 2: Skill/Concept

What is the primary composition of Earth's outer core?

• Rock

• Water

• Iron and Nickel

• Silicon and Oxygen

Tags

DOK Level 1: Recall

What happens to the temperature as you go deeper beneath Earth's surface?

• It decreases.

• It remains the same.

• It increases.

• It fluctuates.

Tags

DOK Level 1: Recall

Explain why the Earth's crust and mantle are composed primarily of rocky material, while the inner layers are composed mostly of iron and nickel.

• The outer layers are cooler and solidify into rock.

• The inner layers are exposed to more sunlight.

• The outer layers are less dense and float on the inner layers.

• The inner layers are older and have more time to accumulate iron and nickel.

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DOK Level 2: Skill/Concept

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

• Crust

• Mantle

• Outer core

• Inner core

What is the main reason the Earth's mantle is solid yet capable of flow?

• High pressure and temperature

• Presence of water

• Magnetic field influence

• Gravitational pull

Which layer of the Earth is composed mostly of silicate rocks rich in magnesium and iron?

• Crust

• Mantle

• Outer core

• Inner core

Tags

NGSS.MS-ESS2-1