2.10 Vocab - Earthquakes


Terms in this set (...)

a scientist who studies seismic waves and the information they provide about the structure of the interior of Earth
a fracture or fracture zone in rock, along which rock masses have moved relative to one another parallel to the fracture
shear strength
the force needed to break a solid material
elastic deformation
a nonpermanent deformation (bending), which recovers when the deforming force if removed
elastic rebound
the return of a bent elastic solid to its original shape after the deforming force is removed
the force that resists the motion of one surface against another surface
fault plane
the surface of a fault along which rock masses move
primary wave (P wave)
a seismic wave that involves particle motion (compression and expansion) in the direction in which the wave is traveling
secondary wave (S wave)
a seismic wave produced by shearing motion that involves vibration perpendicular to the direction in which the wave is traveling; it doesn't travel through liquids, such as those forming the outer core of Earth
surface wave
a seismic wave that travels along the surface of Earth