Show:
Plates
How do they move?
What's it create?
Wegeners Theory
100
Which plate is the largest?
What is the Pacific
100
These boundaries slide past each other.
What is transform
100
This type of boundary creates rift valleys and sea floor spreading.
What is divergent boundaries.
100
The idea that tectonic plates used to be one big land form and gradually drifted apart is called
What is continental drift
200
What causes the plates to drift?
convection currents
200
These plates pull away from each other
What is divergent boundary
200
Earthquakes are created by movement of these boundaries.
What is transform boundaries
200
Wegener named his super-continent what?
What is Pangea
300
Which plate is the smallest
What is Juan de Fuca
300
these boundaries collide into each other.
What is convergent.
300
where do you find sea floor spreading?
What is ocean floors
300
In what year did Wegener publish his theory of continental drift?
What is 1915
400
The North American, South American, Eurasion, and African plates are the boundaries to what?
Mid Ocean Ridge
400
The ocean floor is renewed every 200 million years due to
What is subduction and sea floor spreading.
400
When transform boundaries release the pressure of pushing past each other this happens.
What is earthquakes
400
What evidence did Wegener rely on to support his theory of continental drift?
What is fossils found on far apart continents.
500
How many plates are there according to the map I gave you to study from.
What is 12. Antartic and Juan de Fuca are extra credit if you label them on the map.
500
subduction can occur where
What is in ocean floor trenches
500
When continental convergent plates collide what is created
Mountains
500
Why did Wegener's theory not take off in the world of science?
What is he could not prove how the continents moved.