a long period of time when there is little or no rain
drought
a sudden, violent shaking of the earth’s surface
earthquake
a mass of snow, ice and rock that falls down the side of a mountain
avalanche
a violent storm with very strong winds, especially in the western Atlantic Ocean
hurricane
large amount of water covering an area that is usually dry
flood
a lack of food during a long period of time in a region
famine
an extremely large wave in the sea caused, for example, by an earthquake
tsunami
often started by lightning or drought
forest fire
a large amount of mud sliding down a mountain, often destroying buildings and injuring or killing people below
mudslide
a mass of earth, rock, etc. that falls down the slope of a mountain or a cliff
landslide
a violent storm with very strong winds that move in a circle. There is often also a long cloud that is narrower at the bottom than the top.
tornado
a large number of cases of a particular disease or medical condition happening at the same time in a particular community
epidemic
