Front

Numerical rating system measuring the energy of the largest seismic waves from an earthquake.

Back

Richter scale

Front

Rating scale measuring energy released by an earthquake and faults.

Back

modified magnitude scale

Front

Measures earthquake intensity based on effects on people and structures.

Back

Modified Mercalli Intensity Scale

Front

Conversion of soil into a fluid mass during seismic events

Back

Liquification

Front

Rapid downhill movement of soil and rocks

Back

landslide

Front

Large ocean wave from seafloor movement during an earthquake.

Back

tsunami

Front

Intense tropical storm with winds > 119 km/h

Back

hurricane

Front

A violent, whirling column of air in contact with the ground.

Back

tornado

Front

Large volume of water overflows its boundaries

Back

flood

Front

Extended period of below-average rainfall

Back

Drought