Types of Stress
Stress that pushes a mass of rock in two opposite directions
What is shearing
Has the same structure as a normal fault, but the blocks move in the opposite direction.
What is reverse fault
when normal faults uplift a block of rock
what is fault block mountain
Vibrations that travel through earth carrying the energy released during an earthquake
What are seismic waves
If the earthquake is strong enough, the water displaced by the quake forms large waves
What is tsunami
What is the 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-or-down motion
What is strike slip fault
bends in rock that form when compression shortens and thickens part of earths crust
what is folds
Earthquake waves that compress and expand the ground like an accordion
What are p waves
An earthquake that occurs after a larger earthquake in the same area
What is aftershock
The stress force that pulls on the crust, stretching the rock so that it becomes thinner in the middle
What is tension
The fault is it an angle, so one block of rock lies above the fault while the other lies below the fault
What is a normal fault
a large area of flat land elevated high above sea level
what is plateau
Earthquake waves that vibrate from side to side as well as up and down, they shake the ground back and forth
What are s waves
Occurs when an earthquake's violent shaking suddenly turns loose, soft soil into liquid mud
What is liquefaction
The stress force that squeezes rock until it folds or breaks
What is compression
The half of the normal fault that lies above
What is a hanging wall
a fold in rock that bends upward into an arch
what is anticline
They produce the most severe ground movements
What are surface waves
A building designed to reduce the amount of energy that reaches the building during an earthquake
What is base-isolated buillding
Any change in the volume or shape of earths crust is called
What is deformation
the half of the normal fault that lies below
what is a footwall
A fold in rock that bends downward in the middle to form a bowl
What is syncline
Records the ground movements caused by seismic waves as they move through the earth
What is a seismograph
The shaking an trembling that results from the movement of rock beneath earth's surface
What is a earthquake