Earth’s Layers Pages C6-11.

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Presentation transcript:

Earth’s Layers Pages C6-11

Earth’s Layers Crust-where we walk Mantle-thickest layer, made mostly of solid rock Core (Outer and Inner) – deep inside the earth, made of iron and nickel

How deep are the layers? Crust: 3-43 miles deep Mantle: about 1,790 miles deep Outer Core: about 1,410 miles deep Inner Core: about 750 miles deep

Which layer is the hottest? Inner Core-may be as hot as the sun

What are Plates? Continent-sized slabs that make up the crust and the mantle Plates are constantly moving, very slowly

Plates Move: Away from each other Toward each other Past each other

When Plates Move Together Mountains or Volcanoes are formed

When Plates Move Past Each Other Earthquakes occur

Railroad tracks after an earthquake.

For Discussion What are the three layers of the earth? Crust, Mantle, Core On which layer do we live? Crust

Which is the thickest layer? Mantle Which layer is the hottest? Inner Core

How often do earth’s plates move? They are in constant motion. At what speed do they move? Slowly (only a few centimeters per year)

What is formed when plates move together? Mountains and Volcanoes What happens when plates slide past each other? Earthquakes occur.