Divergent Boundary A plate boundary

where the plates

pull away from each other

As the plates pull away, magma rises to fill the gap. The molten

material cools and forms a type of mountain called a mid-ocean ridge.

EXAMPLE: MID-ATLANTIC RIDGE

Mid-Atlantic Ridge – world’s longest mountain chain

WHEN THE SEA FLOOR GETS LARGER,

THIS ISCALLED SEA-FLOOR

SPREADING

Transform Boundary

This boundary is where two plates slide past each other.

The two plates grinding past each other, creating seismic waves,

resulting in earthquakes!

EXAMPLE: SAN ANDREAS FAULTLINE

San Andreas Fault

Convergent Boundaries

This boundary occurs whentwo plates push against one another.

WHAT FORMS DEPENDS ON THE TYPE OF CRUST.

Continental/Continental CollisionWhen two pieces of continental

Crust collide, this causes the rock layers to buckle upward, creating FOLDED MOUNTAINS.

EXAMPLE: HIMALAYAN MOUNTAINS

Continental/Oceanic Collision - Subduction Zones

If a piece of continental crust collides with a piece of oceanic crust,

the denser oceanic crust subducts or dives under the continental crust. The oceanic plate melts and creates

a volcano! Subduction Zone Animation

Make page ____ look like this:Movement of

PlatesType of

BoundaryCrust + or

Crust-Feature Formed

Feature Example

Convergent

Convergent

Convergent

Transform

Divergent

Create a bubble map about Plate Tectonics and the Three Boundaries.

Plate Tectonics

What the Theory Says

What the original

Theory was

Three Plate Boundaries

and the landforms

they create