When soil on a mountain slope breaks off
landslide
a lack of food during a long period of time in a region
famine
a mass of snow, ice and rock that falls down the side of a mountain
avalanche
A period of unusually and excessively hot weather
heat wave
When natural erosion or human mining makes the ground too weak to support the structures built on it, the ground can collapse
sinkhole
an occasion when a volcano suddenly throws out lava, smoke,
etc.
volcanic eruption
Often started by lightning or drought
fire
An outbreak of a contractible disease that spreads through a human population
epidemic or pandemic
a large amount of water covering an area that is usually dry
flood
Massive storms that come from oceans
typhoon, cyclone or hurricane
A period of no or very little rain.
Drought
Strong, rotating wind that destroys everything in its path.
tornado
When a gas, usually CO2, suddenly erupts from deep lake water, posing the threat of suffocating wildlife, livestock and humans
limnic eruptions
The shaking of the earth
earthquake
an extremely large wave in the sea caused, for example, by an earthquake
tsunami