Strength

Answer:

the point beyond a critical value called _____ at which rocks fail - that is, they lose cohesion and break into two or more parts. Brittle rock formations commonly fail on faults when they are stressed beyond their ___________

Earth Quake

Answer:

occurs when rocks being stressed suddenly break along a new or preexisting fault. The two blocks of rock on either side of the fault slip suddenly, setting off ground vibrations, seismic waves, that are often destructive.

Slip

Answer:

The distance of the displacement

Elastically

Answer:

the blocks would spring back and return to their undeformed, stress-free shape if the fault were suddenly to unlock

Focus:

Answer:

the point at which slip begins.

Aftershock:

Answer:

an earthquake that occurs as a consequence of a previous earthquake of larger magnitude

fore shock

Answer:

a small earthquake that occurs in the vicinity of, but before, a main shock.

P waves or primary waves

Answer:

are the first waves to arrive
compressional or push pull waves that travel through the solid rock of the Earth's crust at about 6 km/s,
which is about 20 X faster than sound waves travel through air. Compressional waves can travel through solid, liquid, or gaseous materials.

S waves or secondary waves

Answer:

waves that follow.the p waves

circum pacfic belt

Answer:

A zone of seismic and volcanic activity that nearly encircles the pacific basin