Plate boundaries
What plate boundary collide with each other?
Convergent
What are the 3 types of convergent boundaries?
1. Oceanic crust vs continental crust
2. Oceanic crust vs oceanic crust
3. Continental crust vs continental crust
Where does Sea-Floor spreading begin?
The mid-ocean ridges.
What is causes convection currents?
The Earth's core heating the mantle.
What plate boundary forms mountains?
Divergen
Where is oceanic crust found?
It is found in the oceans above the upper mantle.
Where are the volcanoes found?
Abyssal Plains
How is new crust formed in the Mid-ocean ridges?
Subduction
What plate boundaries cause earthquakes?
Transform
Where is continental crust found?
It is found above the water in the land.
What is the longest chain of under-water mountains?
Mid-Ocean ridges
Who made the idea of the sea-floor spreading?
Harry Hess
What plate boundary is when the plates slip past each other?
Transform
How is deep-sea trenches made?
Older crust being pushed down under the younger rock.
True or False: Plate movements form mountains, volcanoes, earthquakes, and deep ocean trenches.
True
True or false: Collision with the plates causes crust to crumple up and form mountains.
True
What plates smash into each other?
Convergent
Does gravity pull the older and denser oceanic crust from the mid-ocean ridge to the trenches??
Yes
What makes a Rift Valley?
The plates moving apart.
What are ALL of the pieces of evidence of the Sea-floor spreading?
Molten Material, Magnetic stripes, Drilling samples