Earthquakes occur when two plates suddenly slip past each other, setting off seismic waves that cause the planet's surface to shake, according to the USGS. An earthquake is what happens when the ...

The seismic waves produced by an earthquake are monitored ... crust - relatively thin and rocky mantle - has the properties of a solid, but can flow very slowly outer core - made from liquid ...

A Chinese spacecraft that burned up high over Los Angeles created a sonic trail detected by ground-based sensors.

Features of waves – WJEC Key terms for the features of waves are introduced, and the properties and uses of ... like medical uses and communication. Seismic waves – WJEC Earthquakes produce ...

Other new and expanded topics include anisotropic seismic signatures, borehole waves, models for fractured media ... and an atlas of reservoir rock properties – extended to include carbonates, clays, ...

Earthquakes are most common along fault lines, which are fractures that allow the plates to move. Earthquakes occur when two ...