layers of the earth 6th

-Crust

-Mantle

-Outer Core

-Inner Core

The farther you go to the center of the earth, the greater the temperature becomes.

• It is earth's outer, most coolest, and least dense layer.

• There is two types of crust: Continental Crust and Oceanic Crust

• Oceanic crust: lies beneath the ocean, and is 5 to 10 kilometers (3 to 6 miles) thick.

• Continental crust: contains mostly land, and is 15 to 70 kilometers (9 to 45 miles) thick, the thickest being under a mountain.

• There are areas known as Mid-ocean Ridges where oceanic crust is constantly being created.

• Upper part of the mantle that is made of semisolid rock.

• Flows slowly.

• Convection currents occur her causing tectonic plates to move.

The mantle is about 2,900 kilometers (1800 miles) thick, and the lithosphere and asthenosphere is in the mantle.

The Outer Core: The liquid layer of the Earth’s core that lies beneath the mantle and surrounds the inner core.

The Inner Core: The solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth. (3,964 miles beneath the surface)

• Solid, dense center of Earth made of iron and nickel.

• Although the inner core is very hot, it is kept solid due to the great pressure of the layers above it.

• About 6,380 km below Earth's surface.