Download Convergent Boundary - Plain Local Schools

15-3 Notes:
Teacher
Plate Boundary – Place where 2 plates meet
There are 3 types of boundaries
- Convergent boundary
- Divergent boundary
- Transform fault boundary
Convergent Boundary – 2 Plate meet head on 
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Mountains
Subduction zones
Trenches
Volcanoes
Earthquakes
Island arcs
When an oceanic plate collides with a continental plate,
trenches form. **** Oceanic crust is more dense so it
sinks under the continental crust.***
Example – Himalayas Mountains & Mariana’s Trench
Divergent Boundary – 2 Plates pull apart from each other 

 mid-ocean ridge / rift valleys
 volcanoes
Example – Iceland & Mid-Atlantic Ridge
Transform Fault Boundary - 2 Plates slide past each other
 earthquakes
Example – San Andreas Fault in CA


What causes plates to move?
The driving force is HEAT
- The transfer of energy in Earth’s interior creates large
convection cells in the mantle. These convection cells
push and pull the plates in different directions causing
plates to move.
What can happen when plates meet?
- Mountains form 
- Volcanoes erupt  or 
- Earthquakes occur 

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

- Trenches form on ocean floor ↵
Earthquakes
1. movement along faults
2. seismic waves formed by vibrating rocks
3. focus – point underground where earthquakes start
4. epicenter - located above the focus at the surface
5. surface waves – do most of the damage
Volcanoes
1. can form at both divergent and convergent boundaries
2. melted rock – magma below Earth’s surface
lava above Earth’s surface
3. more dense materials surrounding magma forces it to rise
If enough pressure builds up, it will erupt
Hot Spots
- Volcanoes that do not form at a plate boundary
Example – Hawaiian Islands
15-3 Notes:
Student _______________
Plate Boundary – Place where 2 _________ ________
There are 3 types of boundaries
- _______________ boundary
- _______________ boundary
- __________ ________ boundary
Convergent Boundary – 2 Plate meet head on _____
 Mountains
 ____________ __________
 Trenches
 ____________
 Earthquakes
 ___________ __________
When an oceanic plate collides with a continental plate,
___________ form. **** Oceanic crust is ______ _____ so it
sinks under the continental crust***
Example – _____________ Mountains & ___________ Trench
Divergent Boundary – 2 Plates ____ ____ from each other ____

 Mid-ocean ridge / _____ _______
 Volcanoes
Example – Iceland & _____________ Ridge
Transform Fault Boundary - 2 Plates slide past each other ___

 _______________
Example – _____ ________ Fault in CA
What causes plates to move?
The driving force is _______
- The transfer of _______ in Earth’s interior creates large
________ ______ in the mantle. These convection cells
_____ and _____ the plates in different directions causing
plates to _____.
What can happen when plates meet?
- Mountains form ____
- Volcanoes erupt ____ or _____
- Earthquakes occur
_____



- Trenches form on ocean floor ______
Earthquakes
6. movement along ________
7. _________ waves formed by vibrating rocks
8. focus – point ____________ where earthquakes ______
9. __________ - located above the focus at the surface
10.
surface waves – do most of the ________
Volcanoes
4. can form at both _________ and __________ boundaries
5. melted rock – _____ below Earth’s surface
_____ above Earth’s surface
6. more _____ materials surrounding magma forces it to rise
If enough pressure builds up, it will ______
Hot Spots
- Volcanoes that ___ _____ form at a plate __________
Example – _________ Islands