Vocabulary
Which layer is made up of two parts?
Created the Continental Drift Theory
Who is Alfred Wegener
Earthquakes usually occur in this type of plate tectonics.
Transform boundries
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
Which layer is solid and made of iron and nickel?
inner core
What was the name of the supercontinent?
Pangaea
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
What is the definition of density?
D = mass/volume
Plates float on top of the _______________________.
What is the asthenosphere
Evidence of tropical plants were found on this continent
What is Antarctica
What boundary slides past each other?
transform
Which layer is the densest?
Inner core
Pangaea existed this many millions of years ago
What is around 250 million years ago
This is the mechanism (what causes) the plates to move
What is convection currents in the mantle
Which layer is the least dense?
Crust
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
What is a result of convergent plates - continental to continental colliding?
Mountains
What happens to the older layer as plates subduct?
The older plate will subducts because it is more dense.