Floods is a temporary rise of water level, as in a river or along a seacoast. Floods are usually cause by excessive runoff from precipitation or coastal storm surges. Floods can also occur commonly from heavy rainfall when natural watercourses do not have the capacity to bring excess water.
An earthquake is wen two blocks of the earth suddenly slip past one another. The largest, main earthquake is called the mainshock. It always have aftershocks that follow. These are smaller earthquakes that occur after. The plate boundaries are made up of many faults and most earthquake aound the world occur on these faults. Earthquakes occur when the plate has moved far enough, the edges unstick on one of the faults.
Bushfires is a fire that burns in grass, bush or woodland and can threaten life, property and the environment. Factors that affect a bush fire is the weather becuase the otter and dryer the weather is, the more likely it is for a bushfire to occur and spread quickly. Most bushfires start when it is the driest and the hottest which is mostly during the afternoons.
A drought is a period of dry weather and there has been a lot of rain for a period of time. As streams and rivers dry up plants and animals start to die. Droughts are caused by too little precipitation over a period of tie, but droughts can also be cause by increased demand for the available supply of usuable water.
Storms are a violent disturbance of the atmosphere with strong winds and usually with rain, thunder and lightning. Storms occur usually on summer days where the surface of the Earth is heated by the sun. The action of warm air rising and cold air sinking is the formation of severe thunderstorms.
Tropical cyclones are low pressure systems that form over warm tropical waters and have strong winds. Tropcial cyclones produce destructive winds, heavy rainfall with flooding and damaging storm surges that can cause inundation of low-lying coastal areas.