Plate Tectonics

The outermost, thinnest, coldest, least dense layer of the Earth.  It is the "Peel of the Apple" that we live on.

• Core
• Crust
• Mantle

2 elements that make up much of the rocks in the crust.

• Fe and Ni
• Ra and Rn
• Si and O

Type of crust that is thicker and less dense.

• Continental crust
• Oceanic crust

Type of crust that is thinner and more dense.

• Continental crust
• Oceanic crust

Igneous rock that is dark colored and makes up most oceanic crust.  It has no crystals in it because it cooled quickly on the surface.

• Basalt
• Granite

Igneous rock that is lighter in color and makes up most continental crust.  It has crystals in it because it was magma that cooled slowly underground.

• Basalt
• Granite

The thick, middle layer of the Earth that takes up more volume than any other layer.  It is hot enough in places to melt rock, forming magma.

• Core
• Crust
• Mantle

Makes up the center of the Earth and is rich in the elements iron and nickel.  This is the hottest and most dense layer.

• Core 
• Crust
• Mantle

This layer is a liquid form of iron and nickel that flows slowly, producing Earth's magnetic field.

• Inner core
• Outer core
• Lithosphere
• Asthenosphere

The solid, inner part of the Earth that is made of iron and nickel.  The intense pressure keeps it a solid despite the high temperatures.

• Inner core
• Outer core
• Lithosphere
• Asthenosphere