Continental drift
Who was the scientist to propose the continental drift theory
Alfred Wegener
Name 3 different natural disasters that are caused by plate tectonics
volcanoes, earthquakes, tsunamis
What are the three types of boundaries?
Convergent, Divergent, Transform Boundaries
What type of boundary creates volcanoes?
Convergent
Oceanic crust collides with oceanic crust. The _____ crust goes underneath.
What is the older crust?
What was the super continent named
Pangea
What is occuring when stress builds up between 2 plates and that stress is released in a sudden plate slip.
An earthquake
What type of boundary is it when crust collides?
convergent
Near what type of boundaries do major earthquakes happen?
transform
Granite makes up ____ crust?
What is continental?
What is continental drift
that the continents covering the planet had moved around, were moving around, and would continue moving around
What is the name of the process that creates new oceanic crust?
Sea floor spreading
What type of boundary is it when new crust forms?
Divergent
What is the name of the area that has a very high volcanic activity and lots of volcanoes
Ring of fire
Two continental crusts collide and forms _____.
What is mountains?
Why was the theory of continental drift not accepted by other scientists when it was proposed?
Because the scientist that proposed it could not explain why it was happening
What causes plates to move?
Convection currents
What type of boundary is it when two plates slide past each other?
transform
A famous Transform Boundary where many earthquakes occur is the ___.
What is the San Andres Fault?
Oceanic crust is made up of ___.
What is Basalt?
Name 3 evidence of continental drift
Same type of fossils found in different continents
The fit of the continents shorelines
Matching rocks and mountain ranges in different continents
Location of evidence of past glaciers
Location of evidence of coal deposits
Where do plate tectonics float on
The asthenosphere or MANTLE
What are the three types of convergent boundaries?
continental-continental, oceanic-oceanic, and oceanic-continental
Oceanic crust moves under continental crust because it is _____.
What is more dense?
A famous physical feature occurs at a convergent collisional boundary.
What is the Himalayas?