Compositional Layers
Plate Boundaries
Physical Layers
Tectonic Plates
Misc.
100
These two elements make up most of Earth's core
What are iron and nickel?
100
This type of boundary occurs where two plates collide
What is a convergent boundary?
100
Earth is divided into this many physical layers
What is five
100
Movement of material due to differences in density
What is convection?
100
This is the name given to the single large landmass where the continents were joined about 225 million years ago.
What is Pangaea?
200
This is the densest layer
What is the core?
200
At these kind of boundaries, plates separate
What are divergent boundaries?
200
Tectonic plates move on top of this layer
What is the asthenosphere?
200
These two plates are sliding past each other at the San Andreas Fault
What is North American Plate and the Pacific Plate?
200
This is when molten rock from inside Earth rises through the cracks in the ridges, cools, and forms new oceanic crust.
What is sea-floor spreading?
300
These are the two types of crust
What are continental and oceanic?
300
These are the three types of convergent boundaries
What are ocean-ocean, continent-continent, and continent-ocean?
300
This layer extends from the outer core to the center of the Earth
What is the inner core?
300
Florida is on this tectonic plate
What is the North American Plate?
300
This is the evidence that suggest the continents move
What is mountain formation, fossils, and continents that look like they fit together like puzzle pieces?
400
The lithosphere corresponds to these two compositional layers
What are the crust and upper mantle?
400
Earthquakes happen at these types of boundaries
What are transform boundaries?
400
This layer is divided into pieces called tectonic plates
What is the lithosphere?
400
These three mechanisms drive tectonic plate motion
What are slab pull, ridge push, and mantle convection?
400
Two ways that oceanic and continental crust differ
What is density and thickness?
500
Earth's crust is made up of these three elements
What are silicon, oxygen, and aluminum?
500
Sea-floor spreading happens at these types of boundaries?
What are divergent boundaries?
500
This liquid layer surrounds the inner core
What is the outer core?
500
The theory that describes large-scale movements of Earth's lithosphere
What is the theory of Plate Tectonics?
500
This is the scientist that came up with the theory of continental drift
Who is Wegener?
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