Wegener’s Evidence
The name of the supercontinent Wegener said once held all the continents together.
What is Pangaea?
Wegener could not explain how continents did this.
What is move?
Heat transfer by the movement of material is called this.
What is convection?
Earthquakes most often occur at these locations.
What are plate boundaries?
At this type of convergent boundary, two plates collide, often forming large fold mountain ranges but no volcanic activity.
What is continental–continental convergence?
Evidence based on continents fitting together like puzzle pieces.
What is apparent fit?
The layer of Earth scientists later focused on to explain movement.
What is the mantle?
Hot mantle material does this.
What is rises?
The boundary where plates slide past each other.
What is a transform boundary?
This type of convergent boundary creates deep ocean trenches and volcanic mountain ranges.
What is oceanic–continental convergence?
Evidence using identical fossils found on different continents.
What is fossil correlation?
Seafloor spreading occurs at this type of boundary.
What is a divergent boundary?
Tectonic plates sit on this layer of the mantle.
What is the asthenosphere?
The boundary where plates collide, often causing mountains or volcanoes.
What is a convergent boundary?
When two oceanic plates collide, the older, denser plate subducts,and can form these two ocean features.
What are deep sea trenches and volcanic island arcs?
Evidence involving matching mountain ranges and rock layers across continents.
What is rock and mountain evidence?
New ocean crust forms at these underwater mountain chains.
What are mid-ocean ridges?
Cooler mantle material does this.
What is sinks?
The boundary where plates move apart and magma rises.
What is a divergent boundary?
At this divergent boundary, magma rises beneath the ocean and creates new seafloor.
What is an oceanic–oceanic divergent boundary?
Evidence that includes coal deposits in cold regions and glacial scratches in warm regions.
What is climate evidence?
The farther the seafloor is from a mid-ocean ridge, the _____ it is.
What is older?
Convection currents help move these large pieces of Earth’s crust.
What are tectonic plates?
The name of the transform boundary in California that is responsible for most of California's earthquakes.
What is the San Andreas Fault?
This feature occurs at a continetal divergent boundary and is responsible for eventually creating new seas and oceans.
What is a rift valley?