Seismic Waves Flashcards
1
Q
seismology
A
study of earthquake and earthquake waves
2
Q
Seismic waves
A
- waves of energy caused by the sudden break-ing of rock within the earth or an explosion.
- energy that travels through the earth and is recorded on seismographs
3
Q
is directly located above the hypocenter or focus.
A
epicenter
4
Q
triangulation method
A
seismologists use this to determine the epicenter of an earthquake
5
Q
PHIVOLCS
A
Philippine Institute of Volcanology and Seismology
6
Q
the government agency responsible for providing us with knowledge about earthquakes.
A
Philippine Institute of Volcanology and Seismology or PHIVOLCS
7
Q
number of seismic network across the philippines
A
104 seismic stations
8
Q
two major kinds of seismic waves
A
body wave and surface wave
9
Q
Body wave
A
- ## Travels through the interior of the earth
10
Q
Body wave
A
- Arrives before the surface waves emitted by an earthquake
- Of a higher frequency than surface waves
11
Q
Surface wave
A
- Travels only through the crust
- Of a lower frequency than body waves.
12
Q
Surface wave
A
- Easily distinguished on a seismogram as a result
13
Q
Surface wave
A
- Almost entirely responsible for the damage and destruction associated with earthquakes
14
Q
types of body wave
A
P-wave (Primary) and
S-wave (Secondary)
15
Q
P-wave
A
- The fastest kind of seismic wave
- The first to βarriveβ at a
seismic station - Can move through solid
rock and fluids - also known as compressional waves
