Definitions [5]
Define: Tsunami
It is a long, high sea wave caused by an undersea earthquake or other disturbance.
Define: Avalanche
It is a fall or slide of a large mass as of snow or rock, down a mountain side.
Define: Epidemic
It is an outbreak of a contagious disease that spreads rapidly and widely.
Define: Storm surge
It is an abnormal rise in the level of the sea along a coast caused by the onshore winds of a severe cyclone.
Define: Water table
It is the level below which the ground is saturated with water.
