Plate Tectonics

Plate Tectonics

Types of Crust

• Continental-thinner, more dense (fruit roll up)

• Oceanic-thicker, less dense (graham cracker)

As pieces of crust, or plates meet, different boundaries occur.

Convergent Plate Boundary

• Uplift of continental plate

• Mountain ranges

• Volcanoes

• Ring of Fire

• Island Arc

• Trenches (subduction zones under water)

Divergent Plate Boundary

• Sea-floor spreading

• Rift zones on land

• Mid-ocean ridges under water

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• 
  

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Transform Plate Boundary

• Earthquakes!

• Rock slides

• Faults

Convergent-oceanic and continental

Convergent-continental and continental

Convergent volcanoes

Ring of fire map

Island arc drawing

Actual island arc

Deep sea trench

Divergent oceanic and oceanic

Divergent continental and continental

Mid-ocean ridge drawing

Realistic mid-ocean ridge

Rift zone drawing

Rift zone image

Transform boundary

San Andreas Fault

Multiple Choice

What is the name of a plate boundary where two plates are moving away from each other?

• Convergent

• Divergent

• Transform

Multiple Choice

A scuba diver sees a deep sea trench. What caused the trench?

• Divergent boundary

• Subduction zone

• A shark exploded

• Transform boundary

Multiple Select

Which of these are associated with a transform boundary?

• ring of fire

• sea flood spreading

• rift zone

• rock slides

• faults

Multiple Choice

A tourist is flying in an airplane and sees a line of islands. Which answer choice best explains why the islands formed this way?

• A transform boundary caused them due to a fault

• It is left over from Pangaea

• A divergent boundary caused them due to sea-floor spreading

• A subduction zone at a convergent boundary caused them