Convection Currents
This causes the plates to move
Convection Currents
2 plates moving towards each other is called this
Convergent Boundary
2 plates moving away from each other are called
Divergent boundaries
2 plates sliding past each other are called
Transform boundaries
Oceanic ridges/trenches are
mountains/valleys under the ocean
Convection currents are found here
Asthenosphere
Convergent boundaries are located here.
On fault lines
This rises to fill the gap between plates
Asthenosphere/magma
Earthquakes mostly happen here
under the ocean at fault lines
When the Earth's magnetic pole switches
Magnetic Striping
Warm magma rises because it is this
Less Dense
These are formed because of convergent boundaries
Mountains/volcanoes
What is Mr. French's favorite fast food?
Popeyes
These happen at transform boundaries
Earthquakes
How do volcanoes prove plate tectonics? 2 Sentences
Magma flows as the plates slide around creating space
convection currents are driven by this in the Earth
Heat from the core
Land mass is _______________ in convergent boundaries
destroyed
Land mass is _______________ in divergent boundaries
created
Land mass is _________________ on transform boundaries
neither created or destroyed
How does the fossil record prove plate tectonics? 2 Sentences
fossils found on seperate continents showing the plates were once connected
The lithosphere moved around because of this
Convection Currents
What direction does each plate move in a convergent boundary?
One rises up and the other sinks down
Divergent boundaries move at a rate of
1-2 inches per year
More pressure built up = ?
Stronger earthquakes
How does Magnetic Striping prove plate tectonics? 2 Sentences
as magma rises to the surface the magnetic elements are all alligned North/South showing that new magma comes up.