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Unit 4 - Coggle Diagram
Unit 4
Volcano Hazards
Pyroclastic flow
Gases
Lava flow
Lazars
Ash
Plate Boundary Types
Constructive
Plates ripping apart from each other
Magma from mantle comes out
Cools and solidifies
Volcanoes created
Islands created
Examples
Iceland
Can be underwater or on land
Collision
Continental plates and continental plates that crash into each other
Same density, so no subduction
Fold together
Create mountain ranges
Examples
Himalayan mountain range
Conservative
Plates move along side each other
Different speeds or directions
Rocks are jagged
Hard to slide
Plates get stuck
Pressure builds up
Suddenly jerks
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Convergent
Oceanic and continental plates that crash into each other
Subduction
Deep sea trenches formed
Examples
Mariana trench
Drags continental crust downwards
Pressure builds up
Continental crust suddenly comes back up
Pressure released as earthquakes
Examples
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Oceanic crust pushed down because it is denser
Melts at mantle
Floats up because it is lighter
Creates volcanoes
Examples
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Earthquakes
Volcano types