Continental Drift and Sea Floor Spreading
Plate Boundaries
Plate Boundaries 2
Plate Boundaries 3
Plate Boundaries 4
Main Feature
100
What is the theory of plate tectonics?
is the theory that Earth's outer crust (lithosphere) is divided into several plates that glide over the plastic-like and less rigid asthenosphere (upper mantle).
100
Diverging
100
Why does ocean crust go below continental crust?
because its more dense
100
When one plate slides below another what type of zone is created?
Subduction Zone
100
Who developed the Theory of Continental Drift?
Alfred Wegener
100
What is Ring of Fire?
A long chain of volcanoes that surround the Pacific Ocean
200
What is the Theory of Continental?
The theory that the continents drift.
200
What type of boundary does this diagram represent:
Convergent
200
Name the three types plate boundaries.
Convergent, divergent, transform
200
Who developed the Theory of Sea Floor Spreading?
Harry Hess
200
What type of boundary does this diagram represent?
Divergent
200
What main feature does this diagram represent?
The Ring of Fire in the Pacific Ocean
300
What boundary does this diagram represent?
Transform
300
What is the theory of Sea-Floor Spreading?
Magma rises on the sea floor causing it to spread. The hot magma rising in the mantle caused the spreading on the sea floor and the large pieces of crust (tectonic plates) to move.
300
What type of boundary does this diagram represent?
Convergent Plate Boundary Subduction (Ocean-Ocean)