Earthquake Flashcards
(14 cards)
a sudden violent shaking of the ground sometimes causing a great impact on earth
earthquake
most stable area of land in the Philippines
Palawan
when did the strongest recorded earthquakes that hit the Philippines Archipelago occurred?
September 20 and 21, 1897
“Ring of fire” includes about how many percent of the world’s volcanoes found in the Earth?
90%
the longer the fault runs the higher the ____ runs
magnitude
what does PFZ stand for?
Philippine Fault Zone
PFZ is a ____
left-lateral strike slip fault
a mild tremor preceding the violent shaking movement of an earthquake
foreshock
a smaller earthquake that follows a larger earthquake
aftershock
the location where earthquake begins
focus
the point on the Earth’s surface located directly above the focus
epicenter
type of stress that causes the rocks to push or squeeze against one another
compressional stress
type of stress that causes the rocks to pull apart
tensional stress
when the force of the stress pushes some of the crust in different directions
shear stress
