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Inside layer of Earth. Made of solid Iron and nickel that is surrounded by melted iron and nickel.
Core
What was the evidence that Wegener used to prove his theory of continental drift?
Fossil Evidence and Shape of the Continents
What type of boundary is formed when plates move toward each other?
Convergent Boundary
Low and broad volcano with wide craters that has thin lava from these volcanoes and spread out in layers.
Shield Volcano
Two sides of fault pull apart. The rocks on one side will drop lower than the rocks on the other side.
Normal Fault
Middle layer of Earth. Made of mostly solid rock. Top part is partly melted.
Mantle
What was the theory that Earth's surface is broken up into moving plates?
Plate Tectonics
What type of boundary is formed when plates slide past each other?
Transform Boundary
These volcanos form when gentle eruptions of lava alternate with explosive eruptions of ash and rock. These volcanoes are very tall.
Composite Volcano
Two sides of fault push together. Rocks on one side get pushed up and over the rocks on the other side.
Reverse Fault
Outside layer of Earth. It is a very thin layer. Composed of continents, ocean floor, and mountain ranges.
Crust
What causes the plates to move?
Convection Currents
How much do the plates move per year?
2-5 centimeters
What landform forms when plates collide and the plate crumples up?
Mountain
Rocks on each side of the fault slide against each other horizontally. The San Andreas fault is a strike-slip fault.
Strike-slip Fault
The theory proposed by scientist Alfred Wegener that states the continents have gradually moved over time.
Continental Drift
The lines where the plates meet are called what?
Plate Boundaries
A mountain that builds up around a vent, or opening, where magma pushes through Earth’s surface.
Volcano
What is it called when the layer of Earth bends?
Folding
The shaking of Earth’s crust that occurs when energy is suddenly released.
Earthquake
The name given to the large supercontinent that was formed over 200 million years ago.
Pangaea
What type of boundary occurs when plates move away from each other?
Divergent Boundary
Small volcano with steep sides that has explosive eruptions with smoke and rock.
Cinder Cone
When Earth's layers break instead of bend, what forms?
Faults
What are the three types of earthquake waves?
P, S, and L waves