1. Journey to the Center of Earth

2. Geology
Geology – the study of Earth processes and materials

3. Main Layers of the Earth
Crust
Mantle
Outer Core
Inner Core

4. The Crust Layer that we live on (Lithosphere) 5-25 miles thick
Consists of cooled rock
Thinnest layer of the earth
There are 2 kinds of Crust: Continental (thicker) and Oceanic (thinner)

5. The Mantle Semi-liquid (magma) 3000 km wide
softer closer to the surface (Asthenosphere)
Has convection currents that move the continental plates

6. The Outer Core
Liquid, molten rock
Very high temperatures
Made of Nickel and Iron
2300 km thick

7. The Inner Core Solid layer Solid because of high pressure Mostly Iron
6,000 degree Celsius.
2,100 km wide

8. 4 Main Layers

9. Lithosphere Lithosphere Made up of the Crust and Upper Mantle
The outer part of the Earth that has cooled.
Litho= stone

10. Asthenosphere Asthenosphere
Plastic like consistency below the Lithosphere
Asthenos= weak
Below the Lithosphere
The Middle Mantle

11. Facts Facts Earth is about 6400 km in radius
~25,000 miles in circumference
Maximum inferred temperature is about 6000 Degrees Celsius
Core is 13 times more dense than water

12. What is it made of? What are Earth’s materials?
Materials – rocks, ex. Basalt, Granite. Other materials: minerals like Iron and Nickle
Magma- below Earth’s surface
Lava- above the surface