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Natural Calamities | Class 5 | EVS | CBSE | ICSE | FREE Tutorial

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NATURAL DISASTERS

Natural disasters are catastrophic events with atmospheric, geological, and hydrological origins that can cause fatalities, property damage and social environmental disruptions. processes of the Earth. Different types of natural disasters include floods, earthquakes, hurricanes, volcanic eruptions and many more. There are varying estimates that peg the number of natural disasters per year across the world in the range of 500-1000.

NATURAL DISASTERS IN INDIA

1.Hurricane
2.Landslide
3.Drought
4.Flood
5.Earthquake

HURRICANE

A hurricane is a large rotating storm with high speed winds that forms over warm waters in tropical areas. Hurricanes have sustained winds of at least 74 miles per hour and an area of low air pressure in the center called the eye.

LANDSLIDE

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity.

DROUGHT

A drought is a period of time when an area or region experiences below-normal precipitation. The lack of adequate precipitation, either rain or snow, can cause reduced soil moisture or groundwater, diminished stream flow, crop damage, and a general water shortage.

FLOOD

A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide.

EARTHQUAKE

A series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating.

HOW HUMAN ACTIVITY CAUSES NATURAL DISASTERS

1.Deforestation
2.Urban development
3.Natural wetland destruction
4.Agricultural activities
5.Hydroelectric power

HOW TO REDUCE THE IMPACT OF NATURAL DISASTERS

1.Introduce better flood warning systems.
2.Modify homes and businesses to help them withstand floods.
3.Construct buildings above flood levels.
4.Tackle climate change.
5.Increase spending on flood defences.
6.Protect wetlands and introduce plant trees strategically.
7.Restore rivers to their natural courses.
8.Introduce water storage areas.