key definitions Flashcards
1
Q
EPICENTER
A
a point on the Earth’s surface immediately above the focus
2
Q
HYPOCENTER / FOCUS
A
the point of energy of release of an earthquake found on the fault line
3
Q
EARTHQUAKE
A
a slow build up of pressure, due to frictional resistance, within the rocks is released suddenly, causing an intense shaking motion
4
Q
SEISMIC WAVES
A
shock waves released by the rupture of rocks at the focus, measured on a seismograph
5
Q
FOCAL DEPTH
A
the distance between the epicentre and hypocentre
