Earthquakes And Seismic Waves Flashcards
0
Q
Focus
A
The area beneath the earths surface where rock that is under stress breaks, triggering and the earthquake.
1
Q
Earthquake
A
He shaking and trembling that results the movement of rock beneath earth’s surface.
2
Q
Epicenter
A
The point on the surface directly above the focus.
3
Q
P waves
A
Seismic waves that compress and expand the ground like an accordion.
4
Q
S waves
A
Seismic waves that vibrate from side to side as well as up and down.
5
Q
Surface waves
A
Move slower than p and S waves, but can produce sever ground movements.
6
Q
Magnitude
A
A number that geologists assign to an earthquake based on its size.
7
Q
Richter Scale
A
A rating of an earthquakes magnitude based on the size of its seismic waves.
