Plate Tectonics

Layer of solid rock that forms earth's outer "skin"

Outermost layer of earth's surface

• Mantle

• The Crust

• Lithosphere

• Stratosphere

Describe the mantle's layers and what is in the mantle.

Outer Core

• Solid iron and nickel
• Liquid iron and nickel
• Gasoline and water
• Molten metals

Direct evidence from_____________

Tags

NGSS.MS-ESS1-4

Inner core

Alfred Wegener & Continental drift

• Proposed the theory of continental drift, suggesting that the continents were once joined together in a single landmass called Pangaea.

• Alfred Wegener discovered the theory of plate tectonics
• Continental drift is caused by the Earth's rotation
• Pangaea is the name of the largest ocean on Earth

Tags

NGSS.MS-ESS2-3

Harry Hess

• Harry Hess discovered the theory of seafloor spreading.
• Seafloor spreading was proposed by Alfred Wegener.
• Harry Hess is known for the theory of plate tectonics.
• Harry Hess proposed the theory of seafloor spreading.

Tags

NGSS.MS-ESS2-3

Transform Boundary

Tags

NGSS.MS-ESS2-3

Transform boundary

• Causes frequent earthquakes.

• Rift valley occurs when both tectonic plates are continental.

• Can form structures such as trenches and mountains.

• Forms mountains and shapes other land-forms.