Contiental Drift
Seafloor 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 correct layers of the Earth, starting with the surface.

What is Crust, Mantle, Outer Core, Inner core ?

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 scientist who first proposed the Theory of Continental Drift

Who is Alfred Wegener?

200
These 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 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?

300

Discovered by Arthur Holmes, this is the mechanism by which Earth plates move.

What is convection currents?

300
This ocean is currently growing in size due to seafloor spreading.
What is the Atlantic Ocean?
300

This is the underlaying (plastic-rock) flowing layer which allows the earth's plates to move

What is the Asthenosphere?

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 remains of dead plants or animals preserved in rock.

What are fossils?

400

This technology was used during WWII to detect enemy submarines and produce the first map of the seafloor?

What is Sonar?

400

This is why Earth's inner core is solid despite being hotter than the outer core?

What is pressure?

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

These are the two types of evidence that are used to support the Theory of Continental Drift.

What are similar shapes of coastlines and fossil evidence, and climate?


500

These were two kinds of evidence used to prove that the seafloor spread.

What are magnetic strips and the age of rocks?

500

These are the two types of crust found on earth and their densities and thicknesses?

What is continental crust (less dense, but thicker) and oceanic crust (more dense, but thinner)?

500
This is the term for the fracture created when one plate suddenly slides past another plate.
What is a fault?
500

This feature forms in the ocean when one oceanic plate is forced below another oceanic plate.

What are trenches?

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