Class 5 - SST - Ch-14 Natural Disasters

Class 5_Ch-14 Natural Disasters
Notebook Work
New Words
1. Natural disaster
2. Destruction
3. Crumble
4. Collapse
5. Devastation
6. Seismology
7. Seismograph
8. Richter Scale
9. Intensity
10. Magnitude
11. Tremors
12. Embankment
13. Drought
14. Famine
15. Tidal waves
Words to remember
From book pg no. 102
Fill in the blanks
1. A flood is an example of natural disaster
2. Earthquakes are caused by movements
3. A cyclone is very strong wind with very heavy rain in coastal areas.
4. The intensity of an earthquake is measured on the Richter scale
5. Famines are caused when people suffer from a severe shortage of food because
of droughts.
MCQ
In book pg 103
Answer the following in brief
Q1. A car crashes after breaking traffic signals. Is this an example of a
natural disaster? why?
Ans. A car crash is not a natural disaster rather it is due to human mistake.
A natural disaster is any natural occurrence which causes immense destruction
and loss of life and property
Q2. Why do earthquakes occur?
Ans. An earthquake is a sudden shaking of the Earth surface it is caused by the
moments deep inside the earth.
Q3. Rahi was a farmer whose village was flooded every monsoon. And yet, he
was also thankful for them. Why do you think this was?
Ans. Flood water brings new soil from the mountains and spreads it over the
flooded area making the land more fertile. Rahi being a farmer could seed the
plants on fertile land. That's why, Rahi was thankful for the floods.
Q4. Answer in Words to remember
Q5. Name two non-government organizations that help people during a
natural disaster.
Ans. Two government organizations that help people during the natural disaster
are the Red Cross society and the World health Organization (WHO)
Q6.A newspaper headline reads ' flooding in Delhi due to Tsunami '. Why is
this likely to be fake news? Think and answer.
Ans. The above headline is a piece of fake news because Delhi is located inland,
very far away from the sea hence Delhi can't experience flooding due to a
Tsunami.
Tsunamis are associated with coastal areas and are caused by underwater
earthquakes or other events that display large volumes of water in an Ocean or sea
Q7. A severe drought in the northern plains of India is likely to affect all
people of India even those staying in the Deccan Plateau. Do you agree? Give
reason.
Ans. The drought in the Northern Plains will cause a food shortage in all parts of
the country. The interconnected nature of agriculture and the economy means that
people in the Deccan Plateau and other parts of the country will likely be affected
by such a crisis.
Q8. What are the possible causes of Tsunami?
Ans. Tsunamis are a series of very high waves caused by disturbances under the
sea like earthquakes, volcanoes and landslides.
Answer the following in detail
1. What should you do when an earthquake occurs while you are at home?
Ans. The recommended steps to follow when you are at home during the
earthquake are:
1. Take cover under a table or bed to protect yourself from falling objects and
debris.
2. Try to keep doors open so that they do not get stuck.
3. Move away from window glass and other items that may shatter during the
earthquake.
4. Turn off gas appliances and the main electrical power to prevent the risk of fire.
2. In our country too much and too little rains can both lead to problems: Do
you agree? Give reasons.
Ans. Yes, I agree. Too much and too little rain can cause problems in our country.
Too much rain can cause to flooding and landslides.
Flooding: Too much rain cause rivers to overflow and bring floods in nearby areas
Landslides: Heavy rains lead to landslides in hills and mountains
Too little rain can cause droughts and water shortage
Droughts: It means there is not enough water for crops and plants which can
affect the food supply and can lead to famine
Water shortage: When there is not enough rain, we might not have water for our
essential needs.
3. What steps can be taken to prevent the occurrence of droughts?

Ans. The steps that can be taken to prevent droughts are:
1. Water conservation
2. Afforestation
3. Sustainable agriculture
4. Reservoirs and water storage
5. Groundwater management

Class 5 - SST - Ch-14 Natural Disasters

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Class 5 - SST - Ch-14 Natural Disasters

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Class 5_Ch-14 Natural Disasters

3. What steps can be taken to prevent the occurrence of droughts?

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