Earthquakes
Rapid release of energy
earthquakes
Two types of seismic waves
P and S waves
The most obvious earthquake hazard
seismic shaking
Two types of Earth's crust
oceanic and continental
Where are surface waves recorded
Earth's surface
Location on the surface directly above the focus
epicenter
Type of wave that travel more slowly
S waves
Soil suddenly turns to liquid
liquefaction
The older of the two types of Earth's crust
continental
Records the seismic waves
seismograph
Where most earthquakes occur
fault lines/tectonic boundaries
Compression waves; push or pull motion of waves
P waves
Waves formed when the ocean floor shifts suddenly
tsunamis
The outermost layer of Earth based on its physical properties
lithosphere
Point within Earth where an earthquake originates
focus
Smaller earthquake after the major earthquake
aftershock
Measure of the amount of earthquake shaking based on the amount of damage
intensity
Two types of mass movements that can be triggered by earthquakes
landslides and mudflows
State of matter in the inner core
solid due to the amount of pressure
One of the most studied faults
San Andreas
Tendency for the deformed rock to spring back after an earthquake
elastic rebound
Measure of the size of seismic waves
List two ways to that help reduce the damage to buildings
steel frames, cross braces, shock absorbers under the building, flexible pipes, let the building shake, etc.
Three properties used to classify the physical properties of Earth
temperature, pressure, and density
Shows all three types of waves and time
seismogram