Question

write some examples of natural calamities and their cause​

Answer 1

Answer:

flood - due to land sliding. excessive rain , high sea level.

drought- due to no rain or lack of water .

volcanic eruption- high pressure on earth crust or mantle. .

earthquake- due to quick slide in earth crust.

Tsunami- caused due to volcanic eruption and earthquake

Answer 2

$\bold { \red{EXPLANATION -}}$

WHAT IS NATURAL DISASTER ?

• A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include firestorms, duststorms, floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, storms, and other geologic processes.
• A natural disaster can cause loss of life or damage property and typically leaves some economic damage

CAUSES OF NATURAL DISASTER -

(I) EARTHQUAKE -

• An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves.
• At the Earth's surface, earthquakes manifest themselves by vibration, shaking, and sometimes displacement of the ground.
• Earthquakes are caused by slippage within geological faults

(ii) SINKHOLE -

• When natural erosion, human mining or underground excavation makes the ground too weak to support the structures built on it, the ground can collapse and produce a sinkhole.

(iii) VOLCANIC ERUPTION -

• Volcanoes can cause widespread destruction and consequent disaster in several ways.
• One hazard is the volcanic eruption itself, with the force of the explosion and falling rocks able to cause harm.
• Lava may also be released during the eruption of a volcano; as it leaves the volcano, it can destroy buildings, plants and animals due to its extreme heat.

(iv) DUSTSTORM -

• Duststorm is a spread of dust in arid areas.

(v) FLOOD -

• Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting in some of that water escaping its usual boundaries,or it may occur due to an accumulation of rainwater on saturated ground in an areal flood.
• Floods can also occur in rivers when the flow rate exceeds the capacity of the river channel, particularly at bends or meanders in the waterway.
• Floods often cause damage to homes and businesses if they are in the natural flood plains of rivers.