Alfred Wegener
continents use to be one huge landmass and slowly drifted apart
What is Continental Drift?
Helped proved the continental drift theory.
What is seafloor spreading?
The transfer of heat by the movement of a heated fluid.
What is convection?
Plate boundaries
Where do 2 tectonic plates meet?
Mountains
What convergent (continent-continent) boundaries cause?
one huge landmass of all the continents
What is Pangaea?
Happens on this type of boundary.
What are divergent boundaries?
Particles are spread apart and move fast.
What is low density or hot?
2 types of Earth's crust
What is oceanic and continental crust?
Earthquakes
What transform boundaries cause?
What are convection currents?
Located closest to the divergent boundary (ocean-ocean).
Where is the youngest rock/crust located?
What is high density or cold?
2 tectonic plates collide
What are convergent boundaries?
Valleys
What do divergent (continent-continent) boundaries cause?
The reason scientists could not agree with his theory.
What was the driving force?
Area on the ocean floor where 2 plates move away from one another.
What is the Mid-Ocean Ridge?
Convection currents
What is the exchange of heating and cooling in a cycle?
Location where 2 tectonic plates divide or split up from each other.
What are divergent boundaries?
Mid-Ocean Ridge
What do divergent (ocean-ocean) boundaries cause?
Fossils, climate, and landforms
How to justify Continental Drift Theory?
Formation of new ocean crust by the movement of magma out of the mid-ocean ridge.
What is sea floor spreading?
The location of convection currents that helped explain the continental drift theory.
What is found in the mantle?
Location where 2 tectonic plates slide past each other.
What are transform boundaries?
Volcanic Islands (Hawaii)
What do convergent (oceanic-oceanic) boundaries cause?