Earth's Layers
plate tectonics
mountains
volcanoes
earthquakes
100
crust
What is the outermost layer or Earth
100
Pangea
what was it called when all the continents were all together
100
folding
What occurs when rock layers bend under stress?
100
lava
What is magma when it reaches Earth's surface
100
elastic rebound
what is the return of rock to its original shape after elastic deformation?
200
 lithosphere
What is the first physical layer of Earth
200
plate tectonics
What are large movements of pieces of crust in the lithosphere?
200
fault
What forms when the crack that forms when large blocks of rock break and move past each other?
200
vent
What is the opening of a volcano called
200
elastic deformation
What is when the rock returns to early the same shape after stress is removed?
300
asthenosphere
What is the second physical layer of Earth that is soft mantle that flows slowly
300
Alfred Wegener
Who first thought of the continental drift theory
300
anticline
What is the oldest layer of rock found in the core of the fold called?
300
pyroclastic materials
What is hot ash and bits of rock called?


300
epicenter
What is the focus of an Earthquake directly above the Earth?
400
core
what is the most inner compositional layer of Earth
400
convergent boundaries
what boundaries form when two plates collide
400
deformation 
What is the process by which rocks change shape when under stress?
400
Fissure
What is when lava flows from giant cracks?
400
focus
What is the place within Earth along a fault stress?
500
liquid
is the outer core a liquid or a solid
500
divergent boundaries
What boundary forms when two plates move away from each other
500
Folded, volcanic, fault-block
What are the three types of mountain?
500
caldera
What is when the magma chamber empties and it leaves and large basin shaped depression called?
500
tsunami
What can happen due to an Earthquake?
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