Constructive and Constructive and Destructive Earth Destructive Earth

ProcessesProcesses

Today’s Essential Question

How does our Earth’s crust continue to change?

Today’s Key Vocabulary

landform : feature found on the continental crust

crust: upper layer of the Earth

Vocabulary

Plate Tectonics: The theory that the Earth’s crust is made up of plates that fit together like a puzzle and that these pieces are in motion.

Vocabulary

plate: A piece of the Earth’s

crust.

Vocabulary

fault: The place where two

plates meet.

San Andreas fault in California

Let’s take a closer look at

the crust and why scientists

think it is moving!

Georgia’s Fault Line

The Brevard Fault runs southwest to northeast through Alabama, Georgia, and North Carolina.

Scientists believe that it may have once been where the African continent joined the North American continent.

The Brevard Fault

Georgia’s Fault Line

The Earth’s Crust and Plate Tectonics

• Remember the puzzle…… It’s moving!

An_Introduction_to_Continental_Drift video clip

Pangea__The_History_of_the_Continents.video clip

Plate_Tectonics. video clip

Constructive Plate Movements

• Constructive plate movements build-up the Earth’s crust.

Mountains video clip

Volcanoes video clip

The_Birth_of_Lizard_Island video clip

Types of Constructive Plate Movement

• mountains : formed when two plates collide

• islands and volcanoes: formed when one plate slides under the other or when two plates pull apart and magma

builds up•

Interactive volcano

Ring of Fire

The Pacific Ring of Fire is an area where large numbers of earthquakes and volcanic eruptions occur in the Pacific Ocean.

Georgia’s Stone Mountain

Stone Mountain is located near Atlanta, Georgia. It was formed during the formation of the Blue Ridge Mountains. Scientists believe that magma swelled up from the Earth’s crust and hardened into a granite dome.

Destructive Plate Movement • Destructive

plate movement tears down the Earth’s crust

Earthquakes video clips

The_Eruption_of_Mount_Saint_Helens_in_Washington_State video clip

Types of Destructive Movements

• earthquakes: formed when two plates slide past each other

• volcanoes: volcanoes both build-up the Earth with lava and tear down the Earth with its eruptions.

Destructive Processes

Weathering

Match the plate movement with the picture.

colliding

separating

sliding past

Classify– Constructive/ DestructiveCon

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