a mass of snow, ice and rock that falls down the side of a mountain
Avalanche
a long period of time when there is little or no rain
Drought
a sudden shaking of the earth’s surface
Earthquake
a large amount of water covering an area that is usually dry
Flood
a violent storm with very strong winds
Hurricane
a violent storm with very strong winds that move in a circle
Tornado
an extremely large wave in the sea
Tsunami
