An earthquake's energy is suddenly released when

stored elastic strain is released as rocks slip on a fault (elastic rebound)

Magnitude differs from intensity because magnitude

measures the energy released at the source and is a single value

saturated, loose sediment loses strength and behaves as a liquid

effusively, as runny lava flows

magma is rising and inflating the chamber

provide planar surfaces along which rock can slide

the collapse of old mine workings or dissolution of limestone

earthquake-resistant design, building codes, planning and early warning

14questions. Pick an answer and you'll see why right away.

An earthquake's energy is suddenly released when
The point on the surface directly above the earthquake rupture is the
Which seismic waves travel through solids only, so their absence shows the outer core is liquid?
Magnitude differs from intensity because magnitude
Liquefaction during an earthquake occurs when
A low-silica basaltic magma tends to erupt
The deadliest volcanic hazard is usually
A volcanic mudflow formed when ash mixes with water or melted snow is a
Swelling of a volcano detected by tiltmeters, GPS or satellite radar indicates
Which is the most common trigger of slope failure?
Beds or joints that dip out of a slope are significant because they
A rotational slip along a curved surface, common in clays, is a
Ground subsidence can be caused by
Because earthquakes cannot yet be reliably predicted, the main way to reduce loss of life is