Properties of Earth's Layers

1. 20R

2. Thickness:
10-70km thick
Thinner at oceanic crust

3. Made of:
Rocks, minerals, and less dense
elements (oxygen, silicon)

4. Extra information:
Coolest and thinnest layer, brittle
(can crack)

5. Thickness:
2900 km thick

6. Made of:
Solid
Rocks (some melted), heavier
elements (iron and magnesium)

7. Extra information:
“flows” in asthenosphere
500°C to 4000°C

8. Thickness:
2300 km thick

9. Made of:
Molten iron and nickel (heavy)
Liquid metal

10. Extra information:
Melted metals
Around 4,000°C to 5,700°C

11. Thickness:
1200 km thick

12. Made of:
Iron
Solid metal

13. Extra information:
Most dense and hottest layer (6,000°C)
Spins faster than Earth

14. TRENDS AND PATTERNS?
Deeper into Earth
• Temperature increases
• Pressure increases
• Density increases (heavier)