Earthquakes Flashcards
0
Q
seismic wave
A
a wave of energy that travels through the earth and away from an earthquake in all directions
1
Q
Seismology
A
the study of earthquakes
2
Q
P wave
A
a seismic wave that causes particles of rock to move in a back-and-forth direction
3
Q
S wave
A
a seismic wave that causes particles of rock to move in a side-to-side direction
4
Q
seismograph
A
an instrument the records vibrations in the ground and determines the location and strength of an earthquake
5
Q
seismogram
A
a tracing of earthquake motion that is created by a seismograph
6
Q
epicenter
A
the point on Earth’s surface directly above an earthquake’s starting point, or focus
7
Q
focus
A
the point along a fault at which the first motion of an earthquake occurs
