1. Warm-Up
List one example of something that exists in each of the different spheres.

2. The Earth’s Interior and Exterior

3. The Earth’s Interior Made up of multiple layers
Innermost Layer Known As The “Inner Core”
Second Innermost Layer Known As The “Outer Core”
Third Layer Known As The “Mantle”
Outermost Layer Known As The “Crust”

4. Earth’s Inner Core

5. Earth’s Inner Core Solid, metallic mass
Approximately same temperature as the surface of the sun
Radius of about 750 miles

6. Earth’s Outer Core

7. Earth’s Outer Core Made of molten material
Approximately 1400 miles thick
Approximately 7300 degrees

8. Earth’s Mantle

9. Earth’s Mantle Approximately 1800 miles thick
Accounts for approximately 85% of Earth’s volume

10. Earth’s Crust

11. Earth’s Crust Made up of all the rocks on the surface of the earth
Lies next to the mantle
Roughly 30 miles thick