Enjoy with Social Life-5 [106-136] - School Books Publishers India

7. Organised radio service in India was started in:
(a) 1920 (b) 1895
(c) 1926 (d) 1927
8. Samuel Morse invented telegraph in:
(a) 1844 3 (b) 1845
(c) 1846 (d) 1847
9. The important news agency of India is:
(a) Reuter
(b) Tass
(c) UNI
3 (d) Samachar Bharti
10. Release of poisonous gases from factories cause:
(a) water pollution
(b) land pollution
(c) air pollution 3 (d) noise pollution
11. When Nature Turns Against
Exercise
A. Write True or False :
1. Overflowing of rivers is the main cause of floods. True
2. The coastal belts of India are prone to cyclones. True
3. Trees are very useful to check the flow of water. True
4. Excess of rainfall causes of drought. False
5. The word Typhoon is derived from the English word tufan. False
B. Fill in the blanks :
1. Drought generally occurs due to scarcity of rainfall.
2. Flood generally occur due to heavy rainfall.
3. Natural disasters cause a great damage to life and property.
4. Epidemics are the post-calamatic impacts.
5. Cyclones occur near the coastal regions.
C. Match the following :
1. Tsunami (a) Excessive rain
2. Drought (b) Tremor on the earth's surface caused by
underground shifts
3. Flood (c) Cholera, plague, measles
4. Earthquake (d) Heavy rains, high winds and storm at sea
5. Cyclone (e) Lack of rainfall
6. Epidemics (f) a huge and stormy sea wave
D. Tick (3) the correct action, we do under these situation :
1. During an earthquake :
(a) We should stay away from a tree.
3
(b) We should stay under a tree.
2. During a flood :
(a) We should cross the river to reach the bank.
(b) We should move to the upper part of the building.
3
3. During a drought :
(a) We should conserve water.
3
(b) We should use water as usual.
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Bookman India Enjoy with Social Life [1-5]
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