Contiental Drift
Spreading
Earth's Plates
Plate Boundaries
Effects of Plate Tectonics
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 underlaying (plastic-rock) flowing layer which allows the earth's plates to move.
What is the Asthenosphere?
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
Waves that move up and down
What is the S wave?
200
A mountain under the ocean, which forms where oceanic plates continue to seperate.
What are mid-ocean ridges?
200
This is the rigid upper layer of the earth which inlcudes the earth's crust and upper most mantle.
What is the lithosphere?
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 or volcanic arcs?
300
When continental plates pull apart they form a
What is a rift valley?
300
What kind of movement created the Himalaya mountains.
What is convergent boundaries?
300
Wave that is the fastest and moves back and forth.
What is a P wave?
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
Evidence that were initially used to support the Theory of Continental Drift.
What is fossil evidence?
400
This instrument is used to measure earthquake waves.
What is seismography?
400

Earth's layer that is solid and made of iron and nickel.

What is inner core?

400
This is the term for one plate being forced underneath another plate.
What is Subduction?
400
This is the name of fault found in California where several major earthquakes have occured.
What is the San Andreas Fault?
500
Crust that is made up of land
What is Continental crust?
500
The wave that is the most dangerous.
What is the L wave?
500
These are the two types of crust found on earth.
What is continental crust and oceanic crust?
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?
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