Continental Drift
Faults
Earthquakes
Volcanoes
Plate Tectonics
100
the man responsible for the theory of Continental Drift
Who is Alfred Wegener
100
name for the block of rock below the fault line
What is footwall
100
the point in the Earth where slippage first occurs along the fault
What is the focus
100
the type of magma/lava that is dark colored and is thin and flows easily
What is mafic (basaltic)
100
the driving force of plate tectonics
What is convection currents
200
name of one large landmass
What is Pangaea
200
type of fault in which the hanging wall goes down relative to the footwall
What is normal fault
200
the type of sesmic wave that travels the fastest and can travel through solids, liquids and gases
What is a primary wave
200
the type of eruption expected from mafic lava
What is quiet
200
the type of pyroclastic material that is the smallest and would therefore travel the farthest fromthe volcano
What is volcanic dust
300
name of one large ocean that surrounded the one large landmass
What is Panthalassa
300
the type of force that causes a normal fault
What is tension
300
the type of seismic wave that travels through solids only and causes rock particles move at a right angle to the direction of the wave
What is a secondary wave
300
the type of volcano that has gently sloped sides and a broad base
What is shield
300
the area at which seafloor spreading occurs
What is a mid-ocean ridge
400
mechanism that lent proof to the theory of Continental Drift
What is seafloor spreading
400
type of fault in which the hanging wall goes up relative to the footwall
What is a reverse fault
400
the minimal number of seismographs that are needed to find the location of an earthquake
What is 3
400
the type of volcano that has a broad base and steep sides made of both lava and tephra
What is composite (stratovolocano)
400
the part of the fold that is up-warped to form moutain ridges
What is teh anticline
500
name of man who came up with the theory of seafloor spreading
Who is Harry Hess
500
the type of force that generates a strike-slip fault
What is shearing
500
the point on the surface that is directly above where the earthquake originated
What is the epicenter
500
the type of volcano made from violent eruptions that has steep sides made of tephra and a narrow base
What is cinder cone
500
the boundary at which seafloor spreading occurs
What is divergent
M
e
n
u