Continental Drift
This is the name of the proposed "supercontinent" where all the earth's continents were once joined together.
What is Pangaea?
Seafloor Spreading occurs at what type of plate boundary?
What is a divergent boundary?
This is the underlying (plastic-rock) flowing layer which allows the earth's plates to move.
What is the Asthenosphere?
This type of plate boundary involves two plates moving apart from one another.
What is a divergent boundary?
These features are produced on earth when two continents collide.
What are mountains?
This is the meteorologist who first proposed the Theory of Continental Drift.
Who is Alfred Wegener?
These features form as new crust rises to the surface during seafloor spreading
What are mid-ocean ridges?
This is the rigid upper layer of the earth which includes the earth's crust and uppermost mantle.
What is the lithosphere?
This type of plate boundary involves two plates moving toward each other.
What is a convergent boundary?
These features are produced on the coasts of continents where oceanic crust moves underneath the continent.
What are volcanoes or volcanic arcs?
This is Wegener's flaw (missing piece) of his hypothesis, Continental drift.
What is HOW the continents drifted?
This ocean is currently growing in size due to seafloor spreading.
What is the Atlantic Ocean?
What is the name of the theory that supports Continental drift?
What is plate tectonics?
This type of plate boundary involves one plate sliding past another plate.
What is a transform boundary?
These natural disasters occur when a sudden movement occurs along transform boundaries.
What are earthquakes?
What are two types of evidence that were initially used to support the Theory of Continental Drift.
What are similar shapes of coastlines, fossil evidence (plant and animal), glacial deposits, mountain ranges, and climate change
What is old material?
What are tectonic plates?
What is large, irregularly shaped slabs of Earth's lithosphere (crust and upper mantle) that are constantly moving?
This is the term for one plate being forced underneath another plate.
What is Subduction?
This is the name of fault found in California where several major earthquakes have occured.
What is the San Andreas Fault?
Describe the hypothesis of Continental drift
What is the supercontinent Pangaea moving apart over vast periods of time?
What is circulating in the mantle to move the plates?
What is convection currents?
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)?
This is the term for the fracture created when one plate suddenly slides past another plate.
What is a fault?
These two features form in the ocean when one oceanic plate is forced below another oceanic plate
What are trenches and volcanic islands?