Earthquake Flashcards
Movements of Earth’s crust
TECTONICS
Greek word of tectonics
TEKTONIKOS
meaning of tektonikos
PERTAINING TO CONSTRUCTION
3 main layers of the earth
CRUST, MANTLE, CORE
Consists of semiliquid rocks
MANTLE
Mantle and the liquid rock
LITHOSPHERE
Between the mantle and crust
MOHORIVICIC DISCONTINUITY
Extremely hot/solid
Inner Core
To be liquid or have liquid properties
OUTER CORE
Partly responsible for Earth’s strong magnetic field
INNER CORE
Series of seismic waves
EARTHQUAKE
Body waves radiate outward in all directions
SEISMIC WAVES
Point within the epicenter
FOCUS
Geographic point at the surface directly above the focus
EPICENTER
The closer the focus,
The greater the earthquake
Why is the Philippines prone to earthquakes?
=Due to its geographical location
=Located in the ring of fire where lithospheric plates move and collide
Dec 15,2019
DAVAO DEL SUR STRUCK BY A MAGNITUDE 6.9 EARTHQUAKE
PHIVOLCS
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
Can travel at speeds of up 800kn/h
TSUNAMI
Earthquake generally occur in areas where
FORCE ON ROCK IS WEAK
Long crack in the earth
Fault line
Measure and read vibrations
Seismograph
How many active and inactive volcanoes
100,000
Measure magnitudes
Richter scale
