scienceee Flashcards
any sudden shaking of the ground that often occurs along geological faults
earthquake
where the earthquake begins
focus/hypocenter
the point directly above the focus
epicenter
occurs when the earth’s crust breaks or moves due to geological faults
tectonic earthquake
results from tectonic forces related to volcanic activity
volcanic earthquake
usually occurs in underground mines, usually causeed by seismic waves from rock explosions
collapse earthquake
occurs from the detonation of any nuclear or chemical device
explosion earthquake
fracture found between two blocks of rock on earth’s crust. A weak point in the tectonic plate
fault
the eforces are pulling apart or extensional forces. Hanging wall moves down
normal fault
the forces are compressional or pushing forward each other. hanging wall moves up
reverse fault
motion of the blocks are horizontal or sideways. Also known as transcurrent fault
strike slip fault
estimate of the relative size or strength of an earthquake
magnitude
developed by charles richter and used to measure the magnitude of an earthquake
richter scale
the severity of an earthquake in terms of its effects on earth’s surface, on humans, and structures
intensity
results from earthquakes and pass through the layers of earth
seismic waves
travels through the surface of earth
surface waves
penetrates through the layers of earth
body waves
device used to measure and record earthquakes
seismograph
sea waves greater than five meters that are caused by earthquakes
tsunami
PAGASA MEANING
philippine atmospheric, geophysical and astronomical services administration
the very center of the typhoon. it is where the air sinks
eye
composed of tall rings of thunderstorm that produce heavy rains and strong winds
eyewall
clouds that move away from the eye wall spirally
rainbands
formed in the northwest pacific ocean
typhoon
formed in the south pacific ocean and indian ocean
cyclone
formed in the north atlantic ocean and northeast/south pacific ocean
hurricanes
61 km/h
tropical depression
62-88 km/h
tropical storm
89-117 km/h
severe tropical storm
118-220 km/h
typhoon
more than 200km/h
super typhoon
PAR meaning
philippine area of responsibility
PHIVOLCS
philippine institute of volcanomic and seismology
