Geography Flashcards
What is oceanic crust
The crust that is under the ocean
What is the continental crust
The crust that is not under water (the land)
The layers of the earth
Crust
Mantle
Outer core
Inner core
How are convection currents created
Through the heat of the earths core
Where are earthquakes created
At all plate boundaries
Types of plate boundary’s
Convergent
Divergent
Transform
Meaning of convergent
Where two plates are colliding
E.g. where oceanic meets continental crust
What does Divergent boundary’s mean
Where two plates are moving apart
The space created can also fill with new crustal material source from molten Magma that forms below.
Transform boundary’s meaning
Where plates slide passed each other
What is another name for conservative plate boundary
A transform plate margin
Where are subduction zones found
Normally subduction zones are found at destructive plate boundary’s
What are conservative plate boundary’s
Plates that move in the same direction but at different speeds
What does the word tsunami mean
Harbour wave
What happens as a tsunami approaches the shore
The wave height increases and the wave length shortens
What does social impact mean
The Comunity in that area
E.g 12,000 homeless
