seismic waves and faults
What type of seismic wave causes the most damage?
L waves or surface waves
What type of plate collision has only earthquakes but not volcanoes?
continent-continent convergence
What type of magma has low levels of silica?
basaltic or mafic
Where is the youngest seafloor located?
adjacent to the rift or mid Atlantic ridge
What is a hotspot?
when plates move and a heat source stays stationary and forms new volcanoes
What type of seismic waves arrives at the seismic station first?
P waves or primary waves
What type of volcano is the least explosive?
Shield
Which type of magma has the most silica and explosive eruptions?
felsic or rhyolitic
At a Convergent boundary where there is a continental/continental collision, what forms?
Mountain Ranges
What is used to find the distance to the epicenter?
difference in arrival times of p and s waves
What type of fault that moves vertically and is caused by tensional stress and forms fault block mountains?
normal fault
What type of volcano is the most explosive
Composite Volcanoes
What happens to viscosity as the amount of silica in magma increases?
viscosity increases
At a convergent boundary where there is a continental/oceanic Collison what forms?
explosive composite volcanoes
Where are 3 places that earthquakes are most likely to occur?
Ring of Fire, Hmalayan collision zone, and mid-Atlantic ridge
Which type of fault is caused by compressional stress and moves a block upward
What type of volcano is the smallest and is made of pyroclastic rock?
Cinder Cones
What is the definition of viscosity?
resistance to flow
At a convergent boundary where there is an oceanic/oceanic Collison, what forms?
Ocean volcanic island chain
What depth of earthquakes is most common in subduction zones?
deep earthquakes
Which type of fault is caused by shear stress and only has horizontal movement?
strike slip fault
What type of volcano would carry ashes a great distance, across state?
composite volcanoes
What type of magma would produce shield volcanoes?
low silica and gases
What type of boundary forms the volcanoes in the pacific northwest?
convergent
The place on land directly above where the rocks moved during an earthquake, that has the most violent shaking?
epicenter