Continental Drift
Suggested the theory of Continental Drift
Who is Alfred Wegener?
Theory that when the plates move apart, magma comes up in the ocean to make new crust.
What is seafloor spreading?
Boundary where the plates slide past each other.
What is transform?
Can form at continental-continental convergent boundaries. Ex: Hymilayas
What are Mountains?
Wegener couldn't explain.
How, why, or when?
Suggested the theory of Seafloor Spreading.
Who is Harry Hess?
When one plate slides under the other.
What is Subduction?
Found at transform boundaries & cause earthquakes. Ex: San Andreas
What is a fault line?
Name of all the continents together, means All the Earth.
What is Pangea?
Closer to the mid-ocean ridge.
Where was the newer rock found?
Boundary where the plates collide.
What is convergent?
Found at divergent boundaries, magma comes up and BECOMES LAVA.
What are volcanoes?
Found in many different continents, suggested that they had been together at one point.
What are plant/animal fossils?
Boat that was used to find evidence, found rock samples at bottom of ocean.
What is the Glomar Challenger?
Boundary where plates move away from each other.
What is divergent?
Found at subduction zones, deep in the ocean.
What are deep trenches?
The main evidence for how Wegener knew that Pangea happened (Hint: South America & Africa)
What are puzzle pieces?
Seafloor Spreading and Continental drift helped create the theory of.
What is Plate Tectonics?
The zone where one plate is under another.
What is Subduction Zone?
At the boundary between two diverging tectonic plates where new crust forms from upwelling magma. Ex:MAR
What is a Mid-Ocean Ridge?