A section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust.
Plate
100
A break in Earth's crust where masses of rock slip past each other.
Fault
100
Who came up with the theory of continental drift?
Alfred Wegener
100
The newest rock formations can be found closer to or farther from the fault line during sea-floor spreading.
Closer to the fault line
100
What causes the plates to move according to the Theory of Plate Tectonics?
Convection currents in the mantle
200
A well-tested concept that expalins a wide range of observations.
Scientific Theory
200
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
subduction
200
What does "all lands" mean?
Pangaea
200
Mid-ocean ridges get formed at what type of boundary?
Divergent boundaries
200
Is new crust created or destroyed at a divergent boundary?
created
300
The hypothesis that the continents slowly move across Earth's surface.
Continental Drift
300
The process by which molten material add new oceanic crust to the ocean floor.
Sea-Floor Spreading
300
Give an example of land feature evidence.
Land fits like puzzle pieces
Mountain ranges line up on different continents
300
The Pacific Ocean is shrinking or expanding because of the combined forces of subduction and sea-floor spreading?
The Pacific Ocean is shrinking because of subduction.
300
Is new crust created or destroyed at a convergent boundary?
destroyed
400
An undersea mountain chain where new ocean floor is produced; a divergent plate boundary
Mid-Ocean ridge
400
A deep vally along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.
Deep-ocean trench
400
Give an example of fossil evidence.
Dinosaur fossils in Antarctica
Whale fossils in the desert
Same fossils of animal and plants found on different continents, when the animals couldn't have swam across
400
When oceanic crust collides with continental crust which one gets subducted?
The oceanic crust gets subducted
400
Is new crust created or destroyed at a transform boundary?
Neither, new crust is neither created or destroyed.
500
The theory that pieces of Earth's lithosphere are in constant motion, driven by convection current in the mantle.
Plate Tectonics
500
A plate boundary where two plates move past each other in opposite directions.
Transform boundary
500
Why didn't other scienctists believe Wegener's theory of Continental Drift?
He couldn't explain HOW the plates moved.
500
The Atlantic Ocean is shrinking or expanding because of the combined forces of subduction and sea-floor spreading.
The Atlantic Ocean is expanding becuase of sea-floor spreading.
500
What two theories combined to make the Theory of Plate Tectonics?