EARTHQUAKE HAZARDS Flashcards
The study of earthquakes and seismic
waves
Seismology
They provide explanations on how seismic wave travels
Seismologists
Use to record and measure
the seismic waves
Seismograph
Used to detect the waves
Seismometer
first signal from an earthquake
to arrive, at highest speed
P-Waves
Interior of the Earth
Body Waves
next wave after the first
shaking of the ground,
moves slower
S-Waves
Exterior of the Earth
Surface Waves
rolling up the ground
like waves in oceans
Rayleigh Waves
shakes the ground only in
a horizontal manner
Love Waves
Feeble shaking and violent trembling of
the ground
Earthquake
The large-scale motion of seven large plates
and the movements of smaller plates of the
earth’s lithosphere
Tectonic plates
above the focus of an
earthquake
epicenter
below the earth’s surface where the earthquake
starts
hypocenter
Haven of the most volcanic and earthquake-prone places on earth
Pacific Ring of Fire
The earth’s surface creates fractures or discontinuity due to a continuous movement of earth’s rock
FAULTS
Combination dip-slip and
strike-slip motion
Oblique Fault
Sideways motion
Strike-Slip Fault
The downward movement on a sloping
fault
Dip-Slip Fault
abrupt movement of earth along faults
Tectonic
Earthquake
has deep focus that affects the amount
of energy that will be released in the
surface
Plutonic
Earthquake
induced by the movement of magma
Volcanic Earthquake
comes before a major earthquake
Foreshock
comes after a major earthquake
Aftershock
