Those disasters, which are mainly caused by nature, are called the natural disaster. They are geographical and meteorological. Deforestation, landslides, flood, volcano etc. are some examples of natural disaster.
The overflow of water in rivers, oceans etc. that enters into human settlement and causes great harm is called flood. Rain is not only the cause of the flood. But in the context of Nepal, rain is regarded as the main agent that causes the flood.
Some major preventive measures of flood are as follows:
The sliding down of a piece of land under the force of the gravitational pull of a mountain or hillside is called the landslide. Landslide is a natural process in which rocks debris or parts of land move downwards under the force of gravity.
Some major methods of preventing landslide are as follows:
What is a natural disaster? Give some example.
Those disasters which are mainly caused by nature are called natural disasters. E.g.: flood, landslide, cyclone etc.
What is a flood? List any four causes of a flood.
When the dry land is filled with water overflowing from the rivers or lakes or oceans, it is called flood.
Any four causes of flood are:
i) Heavy rainfall
ii) Increasing Urbanization
iii) Outbrusting of a glacial lake.
iv) Outbrusting of lake formed by landslide
v) Destruction of dam
List any three effects and three ways of controlling flood.
The effects of flood are given below:
a) The flood causes loss of lives of human beings, animals and land as well.
b) It deposits the sediments in its way. It may change the structure of the land.
c) It causes pollution in the sources of water and rivers.
d) It causes epidemic diseases due to rotten dead bodies.
The methods of controlling flood are listed below:
a) Watershed management.
b) Use of engineering technology to control the flow of water in the rivers.
c) Preparation of Flood hazard Map Depending on the geological structure.
List any three safety measures of the flood.
Any three measures of flood are given below:
a) It should not be allowed to make houses and other physical infrastructure near the bank of rivers and streams.
b) The people affected from blood should be displaced towards a safer place in time.
c) The people living on the bank of rivers should be informed about the upcoming disaster in time if possible.
d) The flood affected people should be provided with the necessary things like residence, food, clothes etc.
Public awareness can play an important role in controlling flooding. How?
Public awareness can play the vital role in controlling flood. If public are made aware of the flood, they will try to protect themselves from the flood. For this, they will apply different methods. Such as afforestation, terrace cultivation etc. This will help in preventing from theflood.
What is the single preventive measure for both flood and landslide? How can erosion, flood and landslide cause an earthquake? Why is the earthquake frequent in Nepal?
'Public awareness' is the single preventive measure for both flood and landslide. Erosion, Flood and landslide disturb the position of rocks. Such disturbances create a vibration of the earth and we experience an earthquake.
Himalayan ranges are considered as an active earthquake area. Nepal is situated in this region. So, the earthquake is frequent in Nepal.
What are the preventive measures of landslide?
The preventive measures of landslide are:
© 2019-20 Kullabs. All Rights Reserved.