PLATE TECTONICS

THEORY OF PLETE TECTONICS

• Pieces of earth's lithosphere are in slow
• Constant motion, driven by convection currents
• In the mantle

PLATE MOVEMENT 1

• The cause of the plate movement
• Is slab pull

PLATE MOVEMENT 2

• The cause of plate movement
• Is ridge push

PLATE MOVEMENT 3

• Thr cause of plate movement
• Is convection currents in the mantle

DIVERGENT PLATE BOUNDARY

• A boundary where plates are
• Moving apart

DIVERGENT PLATE BOUNDARY

• Victoria Waterfalls in South Africa
• Land form resulting from
• Divergent plate boundary

DIVERGENT PLATE BOUNDARY

• The Romanche Trench
• In the Atlantic Ocean has
• Resolved because of the divergent boundary

Convergent plate boundary

• The place where two plates
• Converge. (Collide)

CONVERGENT PLATE BOUNDARY

• Ocean vs. Continent
• Puerto Rico Trench
• Land form resolting from
• A convergent plate boundary

CONVERGENT PLATE BOUNDARY

• The Aleutian Islands
• Land form resulting from
• Convergent plate boundary in
• Pacific Ocean, Bering Sea
• Ocean vs. Ocean

CONVERGENT PLATE BOUNDARY

• Continent vs. Continent
• Apennine Mountains (Big Horn)
• Land forming from the convergent
• Plate boundary

SUNDUCTION ZONE

• Is the biggest smash-up on Earth, marking the
• collision between two of the planet's tectonic
• Plates

DEEP OCEAN TRENCH

• A deep crack under water

DEEP OCEAN TRENCH

• Mariana Trench
• The deepest trench in the
• Pacific Ocean

TRANSFORM PLATE BOUNDARY

• A place where the two
• Plates slip.

TRANSFORM PLATE BOUNDARY

• San Andreas Fault is formed
• In California by the transform
• plate boundary.

SAN ANDREAS FAULT