Earthquake Flashcards
refers to a weak or violent shaking of the
earth surface cause by a sudden movement
of rocks materials beneath it.
Earthquake
According to one of the theories regarding the
formation of the Philippines, our islands and mountains
were the result of the collision of the ________ in
the east and the _______ in the west
Pacific Plate & Eurasian Plate
cracks on the earth’s
surface along which smaller plates move or slip against each other.
Fault Line
The place where the energy is released like an explosion is called the
Focus
is the point that is immediately above the focus.
Epicenter
According to PHILVOCS we can
define an active fault line as a
fault which has moved within
the last _____ years
10,000
Is a measure of the total
energy released at the
earthquake’s point of origin
which is below the earth’s
surface.
Magnitude
is used to measure the strength of an earthquake
The Richter Magnitude Scale
Intensity Scale of Scarcely Perceptible
I (1)
Scale of Slightly felt
II (2)
scale of Weak
III (3)
scale of moderately strong
IV (4)
scale of strong
V (5)
scale of very strong
VI (6)
Caused by the passage of seismic waves beneath structures. As a result, these structures may tilt, split, topple, or collapse
Ground Shaking
