1. Layers of Earth

2. Layers of Earth
Core
Mantle
Crust

3. Layers of Earth
*Temperature and pressure increase with as you get closer to Earth's core. 

4. Layers of Earth
Crust
Crust: a layer of rock that forms Earth’s outer skin
Includes land forms, soil, water, etc..
Crust

5. Layers of Earth
Crust
Basalt: Ocean crust made of dark dense rock and is very thin
Granite: Continental crust that is less dense but is thicker (especially where mountains are present)
Oceanic Crust
Continental Crust
2-3 miles thick
Basalt
More dense
20-35 miles thick
Granite
Less dense

6. Layers of Earth Mantle Mantle: Layer of hot rock under the crust
The mantle is 3,000 km thick
Mantle

7. Layers of Earth
Mantle
Lithosphere: upper most part of the mantle and lower part of the crust
About 100 kilometers thick
Solid and broken up into plates by cracks
Lithosphere

8. Layers of Earth
Mantle
The temperature and pressure in the mantle increases with depth
The increasing pressure and high temperature cause the lower part of the mantle (asthenosphere) to be soft and gives it the ability to flow easily (plasticity)

9. Layers of Earth
Mantle
Asthenosphere: Lower, plasticity part of the mantle that flows easily
The core heats this section of the earth, and causes convection current to flow here
Asthenosphere

10. Layers of Earth Mantle Convection current within the asthenosphere:

11. Layers of Earth
Core
Core: inner most part of the earth consisting of 2 parts
Core

12. Layers of Earth Core Outer core: thick liquid, molten material
Inner core: dense ball of solid metal (iron and nickel)