Science 8 – Helgeson
Notes – Plate Boundaries
The 3 Types of Plate Boundaries:
1. ______________ (Constructive) created by ______________.
2. ______________ (Destructive) created by ______________.
3. ______________ created by ______________.
Divergent Plate Boundaries:
Boundary between two plates that are moving ______________ from each other.
Sea floor spreading occurs forming ______________ or ______________.
As ______________ ______________ to the surface to fill the gap a ______________ is created.
Convergent Plate Boundaries:
Two plates moving ______________ each other ______________.
______________ ______________ – Place where one plate is ______________ under another plate.
The subducted plate ______________ and eventually ______________ causing ______________.
The ______________ rises to the surface causing ______________.
Oceanic-Oceanic:
One plate (the ______________ one/______________ ______________ one) bends and slides under the
other forming a ______________ zone.
A ______________ ______________ ______________ is formed and new magma rises to form volcanoes,
or ______________ ______________.
Oceanic-Continental:
Here the dense ______________ plate sinks under the less dense ______________ plate.
______________ ranges that contain ______________ occur here.
Continental-Continental:
Plates ______________ and crumble up.
No subduction zone (both have the ______________ ______________).
Formation of mountain ranges by ______________.
______________ are common at these ______________ plates.
Transform Plate Boundaries:
Two plates ______________ past each other.
Can be moving in ______________ or ______________ direction but at different ______________.
Many ______________ occur at these boundaries.
Transform plate boundaries occur between ______________ of the ______________ ridge.
Can also occur on ______________.