1. Plate Boundaries and Motion
Plate Tectonics
Plate Boundaries and Motion

2. Plate Boundaries Divergent Boundary – moving _____
Convergent Boundary – moving ________
Transform Fault Boundary – moving ________________________
apart
together
sideways past each other

3. Divergent boundary of two continental plates.
Creates a __________. Example: _____________
East African Rift
rift valley

4. Divergent boundary
Divergent boundary

5. Convergent boundary of two oceanic plates.
Creates an ________ and a _____. Example: _____
island arc
trench
Japan

6. Convergent boundary
Convergent boundary
Subduction

7. Convergent boundary of an oceanic plate and a continental plate
Convergent boundary of an oceanic plate and a continental plate. Forms a _______ mountain range and a ______. Examples: _______ or _______ Mts
volcanic
trench
Andes
Cascades

8. Convergent boundary of two continental plates
Convergent boundary of two continental plates. Forms a ______ mountain range. Examples: ___________, Alps, ______________
folded
Himalayas
Appalachians

9. Transform-fault boundary where the North American and Pacific plates are moving ____ each other.
Example: ________________ in California
past
San Andreas Fault

10. Transform boundary
Transform boundary

11. Plate Boundary Summary
Type of Boundary
Process Involved
Characteristic features
Examples
Divergent
Sea-floor spreading
Mid-ocean ridge
Rift valleys,
Earthquakes,
Volcanic Activity
Mid-Atlantic Ridge
East Pacific Rise
Convergent
Ocean-ocean subduction
Deep sea trenches
Volcano along coast of continent
High continental mountain chains
Islands of Indonesia,
Mariana Islands
West coast of S. America
Himalayas
Ocean-continent subduction
Continent-continent collision
Transform
Plates sliding past each other
Earthquake activity
San Andreas Fault,
North Anatolian Fault,
Fracture zones along mid-ocean ridge

12. Plate Boundaries Review
Places where plates move apart are called _____________ boundaries.
When continental plates diverge a ___________ is formed.
When two oceanic plates converge what is created? _________________
The Appalachians formed mainly from continental plate collisions and therefore are a __________ mountain range.
The force moving the plates is ____________ .
divergent
rift valley
an island arc and a trench
folded
Convection currents