1. The Earth’s Layers

2. The Earth is divided into FOUR LAYERS.

4. CRUST where we live
CRUST = lightest matter
CORE = heavy metals

7. CRUST
Earth's Crust is like the skin of an APPLE.…very thin

8. CRUST Broken into many pieces called PLATES.
PLATES move along the soft MANTLE which is the layer located located below the crust.

9. WHAT ARE PLATES?
Continent-sized slabs that make up the crust and the mantle
Plates are constantly moving, very slowly

11. PLATES MOVE:
Away from each other
Toward each other
Past each other

12. WHEN PLATES MOVE TOGETHER
Mountains or Volcanoes form

13. When Plates Move Past Each Other
Earthquakes occur

14. Railroad tracks after an
earthquake.

15. CRUST
The PLATES move along smoothly but sometimes they get stuck and pressure builds up.

16. The pressure builds and causes an EARTHQUAKE as rocks break and crack.
CRUST
                                                                                 
San Francisco City Hall after the 1906 Earthquake.
The pressure builds and causes an EARTHQUAKE as rocks break and crack.

17. MANTLE
The MANTLE is the largest layer of the Earth. (upper MANTLE = LITHOSPHERE)
It is made of hot, dense rock.
The rock in the mantle flows like asphalt because of the temperature differences found in the mantle.

19. MANTLE
The movement of the mantle create the movement of the Earth’s plates.

20. CORE
The INNER CORE of the Earth is much like a ball of very hot metals. Mostly IRON AND NICKEL.
The INNER CORE is surrounded by a fluid iron OUTER CORE.

22. EARTH AS A GIANT MAGNET

23. EARTH LAYERS RAP