Type of plate
boundary
|
Description of
changes
|
Earthquake /
volcanic activity
|
Examples
|
Constructive zone
|
Two crusts / plates
move away from each other.
|
Moderate volcanic
and earthquake activity.
|
Mid-Atlantic ridge.
Iceland.
|
Destructive zone
|
Oceanic crust /
plate moves towards continental crust / plate. The oceanic crust is heavier
and sinks.
|
Violent volcanic and
earthquake activity.
|
Nazca and South American
plates.
|
Collision zone
|
Two continental
crusts / plates collide and are forced up into fold mountains.
|
Earthquake activity,
(no volcanic activity).
|
Indo-Australian and
Eurasian plates.
|
Conservative zone
|
Two plates move
sideways past each other.
|
Violent earthquake activity
(no volcanic activity).
|
Pacific and North
American plates.
San Andreas,
California.
|
Type of plate
boundary
|
Drawing
|
Constructive zone
|
 |
Destructive zone
|
 |
Collision zone
|
 |
Conservative zone
|
 |
