L AYERS OF E ARTH Criteria for Success I will label the layers of the earth on a diagram.

C ORNELL N OTES

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) 3 Compositional Layers of Earth Crust, Mantle, Core (inner core and outer core)

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) Crust 5-25 miles Continental Crust (makes up continents) Oceanic Crust (makes up ocean floor) The thin and solid outermost layer of the Earth-mostly rock Like the skin of an apple At 1600 degrees Fahrenheit, rocks begin to melt Broken into many pieces called plates The plates “float” on the soft plastic mantle which is located below the crust

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) Mantle 1800 miles the layer of rock between the Earth’s crust and core (iron and magnesium) Largest layer of the earth The movement of the mantle is the reason that plates of the Earth move Top-1600 degrees F Bottom degrees F

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) Outer Core 1400 miles Liquid state Composed of the melted metals nickel and iron

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) Inner Core 800 miles Solid, inner layer of the core The inner core has temperatures and pressure so great that the metals are squeezed together and are forced to vibrate in place as a solid. The temperatures may reach 9000 degrees Fahrenheit.

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) 5 Physical Layers of Earth Lithosphere Asthenosphere Mesosphere Outer Core Inner Core

Key Words (Left Side is smaller than the right side) Information (Right side is bigger than the left side) Lithosphere The crust and upper mantle Asthenosphere Soft layer of the mantle (plastic) Mesosphere Solid Layer of the mantle Outer Core Liquid Inner Core Solid

L ITHOSPHERE

A STHENOSPHERE

Draw a line under the last part of your notes Write the word Summary Write a 5-7 sentence summary about what you have learned about the layers of the earth