Friday 14 October 2011

Questions based on plate boundaries.

What are the differences between:-

a) Plates made of oceanic and continental crust?
- Oceanic plates are thin, while continental plates are thick.

b) Destructive and constructive margins?
- Destructive margins are when the dense oceanic crust is subducted under the less dense continental crust, while constructive plate margins are when two tectonic plates are moving away from each other. So, divergent and constructive margins move in the opposite direction.

c) How is a conservative margin different from those two?
- It is different because conservative margins aren't moving away or towards each other, instead its sliding past each other which causes earthquakes.

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