Show:
Contiental Drift
Ocean Landforms
Earth's Plates
Plate Boundaries
Effects of Plate Boundaries
100
This is the name of the proposed "supercontinent" where all the earth's continents were once joined together.
What is Pangaea?
100
Seafloor Spreading occurs at what type of plate boundary?
What is a divergent boundary?
100
This is the underlying (plastic-rock) flowing layer which allows the earth's plates to move.
What is the mantle?
100
This type of plate boundary involves two plates moving apart from one another.
What is a divergent boundary?
100
These features are produced on earth when two continents collide.
What are mountains?
200
This is the meteorologist who first proposed the Theory of Continental Drift.
Who is Alfred Wegener?
200
These underwater mountainous features form as new crust rises to the surface during seafloor spreading.
What are mid-ocean ridges?
200
This is the rigid upper layer of the earth which includes the oceans and continents.
What is the crust?
200
This type of plate boundary involves two plates moving toward each other.
What is a convergent boundary?
200
These features are produced on the coasts of continents where oceanic crust moves underneath the continent.
What are volcanoes?
300
This is how many years ago earth's "supercontinent" began to split apart.
What is 200-250 million years ago?
300
This ocean is currently growing in size due to seafloor spreading.
What is the Atlantic Ocean?
300
This is the total number of plates known on earth.
What is 15?
300
This type of plate boundary involves one plate sliding past another plate.
What is a transform boundary?
300
These natural disasters occur when a sudden movement occurs along transform boundaries.
What are earthquakes?
400
These are the two types of evidence that were initially used to support the Theory of Continental Drift.
What are similar shapes of coastlines and fossil evidence?
400
This deep feature forms when an oceanic plate converges with another plate.
What is a trench?
400
This is the average distance the earth's plates move per year.
What is 1-2 inches / year?
400
This is the term for one plate being forced underneath another plate.
What is Subduction?
400
This is the name of the fault found in California where several major earthquakes have occurred.
What is the San Andreas Fault?
500
These two continents have the closest fit of shape and fossil evidence.
What are Africa and South America?
500
Hawaii and Yellowstone are known as these because they have a volcanic center that releases hot mantle material.
What are hot spots?
500
These are the two types of crust found on earth and their thicknesses?
What is continental crust (thicker) and oceanic crust (thinner)?
500
This is the term for the fracture created when one plate suddenly slides past another plate.
What is a fault?
500
These two features form in the ocean when one oceanic plate is forced below another oceanic plate.
What are trenches and volcanic islands?