The point beneath Earth's surface where rock breaks under stress and causes an earthquake
The point on Earth's surface directly above an earthquake's force
A vibration that travels through Earth carrying the energy released during and earthquake
A type of seismic wave that compresses and expands the ground
A type of seismic wave that moves the ground up and down or side to side
A type of seismic wave that forms when P-waves and
S-waves reach Earth's surface
A device that records ground movements caused by seismic waves as they move through Earth
The measurement of an earthquake's strength based on seismic waves and movement along faults
A scale that rates earthquakes according to theri intensity and howmuch damage they cause
A scale that rates seismic waves as measured by a particular type of mechanical seismicgraph
A scale that rates earthquakes by estimating the total energy released by an earthquake
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.