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Plate Tectonics
Volcanoes
Earthquakes
Vocab
More Vocab
100
The thin layer of earth that makes up the tectonic plates
What is the crust
100
This type of volcano is described as a mountain with broad gently sloping sides and a nearly circular base
What is a shield volcano
100
These waves arrive first after an earthquake
What is p waves (primary waves)
100
Places where two tectonic plates are moving towards each other
What is convergent boundaries
100
type of boundary where plates slide past one another
What is a transform boundary
200
This geologist is credited with coming up with the main theory of plate tectonics
Who is Alfred Wegener
200
this can form when the summit or the side of a volcano collapses into the magma chamber
What is a caldera
200
The exact point where an earthquake originates from
What is the focus
200
Area where one tectonic plate is descending beneath the other
What is subduction
200
fracture or system of fractures in the earth's crust in which movement can occur (san andreas)
What is a fault
300
The hypothesis put forth by Alfred Wegener that posed that earth's surfaces had once been joined as a single land mass
What is continental drift
300
This is the area where lava erupts through
What is a vent
300
This scale is used to quantify the amount of damage done by an earthquake 1-12 scale in roman numerals
What is the mercalli scale
300
the internal resistance to flow
What is viscosity
300
point on earth's surface directly above the focus
What is the epicenter
400
This theory states that Earth's crust and rigid upper mantle are broken into enormous slabs
What is the theory of plate tectonics
400
This type of magma has the highest viscosity
What is rhyolitic magma
400
These seismic waves cause most damage
What are surface waves
400
Magma formed from granite rock
What is rhyolitic magma
400
Name used when magma reaches the surface
What is lava
500
The driving force of plate tectonics
What is convection currents in the earth's mantle
500
What is the range of temperatures where rocks begin to melt to form magma
What is 800 degrees celsius to 1200 degrees celsius
500
this scale for measuring earthquakes is based on the size of the largest seismic waves generated by the quake
What is the richter scale
500
Areas where magma has intruded into the crust and cooled to form igneous rock bodies
What are plutons
500
Supercontinent proposed by Wegener
What is Pangea