Exploring Earth's Layers: Composition and Properties

What are the three main layers of the Earth based on chemical composition?

• Crust, Lithosphere, Core

• Inner Core, Outer Core, Mantle

• Lithosphere, Asthenosphere, Mesosphere

• Crust, Mantle, Core

Which type of crust is thicker and contains less dense igneous rock like granite?

• Oceanic Crust

• Continental Crust

• Lithospheric Crust

• Asthenospheric Crust

What is the average thickness of the oceanic crust?

• 25 miles

• 75 kilometers

• 40 kilometers

• 4 miles

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

• Silicate minerals with more magnesium and iron

• Sedimentary rocks

• Iron and nickel

• Basalt and granite

How thick is the Earth's mantle?

• 25 miles

• 4 miles

• 755 miles

• 1,800 miles

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

• Silicate minerals

• Granite

• Iron and nickel

• Basalt

What is the temperature range of the Earth's outer core?

• 4,000 to 6,000 degrees Fahrenheit

• 9,000 to 13,000 degrees Fahrenheit

• 7,200 to 9,000 degrees Fahrenheit

• 1,800 to 2,900 degrees Fahrenheit

Tags

NGSS.HS-ESS2-3

Which layer of the Earth is described as viscoelastic?

• Lithosphere

• Mesosphere

• Outer Core

• Asthenosphere

What is the thickness of the lithosphere?

• 1,200 kilometers

• 100 kilometers

• 1,800 miles

• 755 miles

Which layer of the Earth is the strongest and flows more slowly than the asthenosphere?

• Lithosphere

• Mesosphere

• Inner Core

• Outer Core