NAME ________________________________
Layers of the Earth Worksheet
Use the word bank to label the diagram below
Asthenosphere
Continental Crust
Lithosphere
Mantle
Mesosphere
Core
Crust
Oceanic Crust
Answer the following questions:
1. You’re digging through the outermost layer. Where are you?

Crust
2. What are the two types of crust?
Inner Core
Outer Core

Continental Crust, Oceanic Crust
3. How are the two types alike? How are they different?


both made mainly of oxygen, silicon, and aluminum
The oceanic crust is thinner while the continental crust is much thicker & the oceanic
crust is denser than the continental crust.
4. You’ve gotten to about 150 km below the surface. Where are you?

Lithosphere
5. In what layer of the Earth are the deepest mines and drill holes found?

Crust
6. Why have we not drilled or mined deeper into Earth?

our drills aren't powerful enough
7. How do we know what Earth’s interior is like below the deepest drill holes?

Seismic waves from large earthquakes pass throughout the Earth. These waves contain
vital information about the internal structure of the Earth.
8. How is the lithosphere related to the crust?

Both are outer layer
9. Which part of our earth is broken into plates?

Lithosphere
10. Which layer of our earth is the thickest?

Mantle
11. Which layer of our earth is the thinnest?

Crust
12. How far is it to Earth’s center?

6,371 kilometers (3,958 mi)