Earth's Layers Quiz

What analogy is used in the text to describe the Earth's layers?

• A layered cake

• An onion

• An apple

• A sandwich

Which layer of Earth is described as the "cool, rigid, outermost layer"?

• Crust

• Mantle

• Lithosphere

• Outer core

What are the large pieces that the lithosphere is broken into called?

• Lithospheric layers

• Tectonic plates

• Mantle blocks

• Crustal fragments

What is the primary composition of Earth's core?

• Oxygen and silicon

• Iron and nickel

• Calcium and aluminum

• Magnesium and sodium

What makes the mantle denser than the crust?

• It contains lighter elements.

• It is in the liquid state of matter.

• It contains heavier elements.

• It is composed of the densest materials.

What is the asthenosphere?

• The very center of Earth, surrounded by the mantle

• A layer of Earth's mantle with greater plasticity located below the lithosphere

• The outer core of the planet

• The main lithospheric plate

What property of the asthenosphere allows the lithospheric plates to "float" on top of it?

• Rigidity

• Density

• Plasticity

• Solidity

What is the state of matter of the outer core of Earth?

• Solid

• Liquid

• Gas

• Plasma

How can the asthenosphere be distinguished from the rest of the mantle beneath it?

• By the speed at which it moves the lithospheric plates

• By the temperature differences

• By differences in density

• By its location above the lithosphere

What does the map in the image primarily show?

• The different layers of Earth's atmosphere

• The location of Earth's magnetic poles

• Earth's main lithospheric plates

• The continents as they were millions of years ago