Stress
any change in shape or volume of earths crust is called.
what is deformation
A break in earths crust where slabs of crust slip past each other.
What is a fault
A wave of energy that travels through the Earth in the form of vibrations
What is seismic wave?
records the ground movement caused by seismic waves as they move through earth
what is seismogram
occurs when an earthquake's violent shaking suddenly turns loose, soft soil into liquid mud.
What is liquefaction
a force that acts on rock to change its shape or volume.
what is stress
The rocks on either side of the fault slip past each other sideways with little up and down motion.
What is strike slip fault
The name of the seismic wave that comes first in an earthquake
What is p wave/primary wave?
is a measurement of earthquakes strength based on seismic waves and movement along faults
what is magnitude
a smaller earthquake following the main shock of a large earthquake.
What is a aftershock
Stress that pushes a mass of rock in two opposite directions is called
What is shearing.
The fault is at an angle, so one block of rock lies above the fault while the other block lies below the fault.
what is a normal fault
The type of seismic wave that causes the most severe damage
What is surface wave?
was developed to rate earthquakes according to their intensity
what is mercalli scale
the water displaced by the quake forms large waves
what is a tsunami
Pulls on the crust, stretching rock so that it becomes thinner then the middle.
what is tension
Has the same structure as a normal fault, but the blocks move in the opposite direction.
what is a reverse fault
When s waves arrive
What is after p waves?
is a rating of the size of seismic waves that was once measured by a type of mechanical seismograph
what is richter scale
A building designed to reduce the energy a earthquakes is called
What is a base isolated building.
Squeezes rock until it folds or breaks.
What is compression
The half of the fault that lies below is called.
what is the footwall
The device that measures seismic waves
What is seismograph?
a rating system that estimates the total energy released by a earthquake
what is moment magnitude scale
the loose soil shakes more violently then the surrounding rock
what is soil conditions.