What's the Spread
Show me the Evidence
Catch my Drift?
Out of Boundries
Potpourri
100
Along mid-ocean ridges where new sea floor is created
What is sea-floor spreading?
100
It is caused by rising plumes of mantle material
What is a Hot Spot?
100
He created the Continental Drift Theory
Who is Alfred Wegener?
100
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
100
Descending oceanic crust pulls the plate driving plate motion
What is Slab-Pull?
200
Mountain chains located in the middle of the oceans
What are mid-ocean ridges?
200
Volcanic islands can form over them
What are Mantle Plumes?
200
Two separate continents where Wegener found matching animal fossils
What are Africa and South America?
200
The boundary where plates are spreading apart.
What is a divergent boundary?
200
They are destructive places on the planet
What are convergent boundaries?
300
The supercontinent break-up studied to support the theory of sea-floor spreading.
What is Pangaea?
300
It is recorded in rocks as they form at oceanic ridges
What is the direction of the Earth's magnetic field?
300
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
300
When one plate goes under another.
What is subduction?
300
This is the mechanism that causes the plates to move
What is convection cycles in the mantle?
400
These lie in the middle of the mid-ocean ridges.
What is a Rift Valley?
400
It gets thicker as the distance from the mid-ocean ridge increases
What is the ocean sediment layer?
400
The convergent plate boundary that causes volcanoes at the edges of continents
What are converging Oceanic-Continental plate boundaries?
400
They are the three types of plate boundaries?
What is convergent, divergent, and transform?
400
The San Andreas Fault in California is an example of this type of boundary.
What is a transform boundary?
500
This is created when polar reversals occur at a spreading center.
What is magnetic striping?
500
It can be used to measure plate movement and to find your way to Town Center Mall?
What is GPS?
500
The published research of Alfred Wegener
What is "The Origin of Continents and Oceans"
500
It's where an ocean trench forms and lithosphere is subducted into the mantle
What is a Convergent Plate Boundary?
500
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
Who is Harry Hess?
M
e
n
u