plate tectonics
Earth Quakes
layers of the Earth
volcanoes
faulting, folding, and boundaries
100
a piece of the lithosphere that moves around on top of the asthenosphere
What is tectonic plates
100
commonly used to measure earthquakes. named by Charles Richter, who developed the scale in the 1930s
What is Richter scale
100
the outermost rigid layer of the Earth
What is lithosphere
100
a volcano that is built out of layers of lava from repeated nonexplosive eruptions
What is shield volcanoes
100
when rocks are pushed together by compression
What is reverse fault
200
the theory that the Earths lithosphere is divided into tectonic plates that move on top of the asthenosphere
What is plate tectonics
200
these move the ground up and down in circles as the waves travel along the surface
What is surface waves
200
the liquid layer of the Earth's core that lies beneath the mantle
What is outer core
200
they form by explosive eruptions of pyroclastic material followed by quieter outpouring of lava
What is composite volcanoes
200
the boundary between two colliding tectonic plates > <
What is convergent boundary
300
the theory that continents can drift apart from another and have done so in the past
What is continental drift
300
can travel through solids, liquids and gases known as pressure or primary waves
What is p waves
300
the strong, lower part of the asthenoshpere
What is mesoshpere
300
small volcanic cones made entirely of pyroclastic material from moderately explosive eruptions
What is cinder cone volcanoes
300
rock layers are folded
What is monocline
400
the process by which new oceanic lithosphere is created at mid-ocean ridges as older materials are pulled away from the ridge
What is sea-floor spreading
400
the second fastest type of seismic waves cant travel through complete liquid
What is s waves
400
the solid dense center of the earth
What is inner core
400
clouds of hot debris and gases shoot out from the volcano, often at supersonic speeds
What is explosive eruptions
400
when rocks grow over each other the form layers in the earth
What is syncline
500
super continent that existed during the late Paleozoic and early Mesozoic eras
What is pangea
500
a place within the earth where the speed of seismic waves increases sharply. it marks the boundary between the earths crust and mantle
What is moho
500
the soft layer of the mantle on which the pieces of the lithosphere move
What is asthenoshpere
500
rivers of red hot lava called lava flows
What is nonexplosive volcanoes
500
a fault in which the two fault blocks move past each other horizontally
What is strike-skip fault
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