Atmosphere : Structure, air pressure and wind system

Chapter-2 


Give Very short answer:

1. What is atmosphere? Write in brief with data about its structure.

āĻĒā§°িā§ąেāĻļ āĻ•ি? āχāϝ়াā§° āĻ—াঁāĻĨāύিā§° āĻŦিāώāϝ়ে āĻĄাāϟাā§° āϏৈāϤে āϚāĻŽুāĻ•ৈ āϞিāĻ–āĻ•।

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2. What are the main layers of the atmosphere based on chemical composition of the gases? Write briefly about the characteristics of these layers.

āĻ—েāϛ⧰ ā§°াāϏাāϝ়āύিāĻ• āĻ—āĻ āύ⧰ āĻ“āĻĒā§°āϤ āφāϧাā§°িāϤ āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞ⧰ āĻŽুāĻ–্āϝ āϏ্āϤ⧰āĻŦোā§° āĻ•ি? āĻāχ āϏ্āϤ⧰āĻŦোā§°ā§° āĻŦিāĻļেāώāϤ্āĻŦāĻŦোā§°ā§° āĻŦিāώāϝ়ে āϚāĻŽুāĻ•ৈ āϞিāĻ–āĻ•।

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3. Write with diagram about the layers of the atmosphere based on the variations in altitude and temperature and write the characteristics of each layer in brief.

āωāϚ্āϚāϤা āφ⧰ু āωāώ্āĻŖāϤাā§° āϤাā§°āϤāĻŽ্āϝ⧰ āĻ“āĻĒā§°āϤ āφāϧাā§°িāϤ āϕ⧰ি āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞ⧰ āϏ্āϤ⧰⧰ āĻŦিāώāϝ়ে āύāĻ•্āϏাā§° āϏৈāϤে āϞিāĻ–āĻ• āφ⧰ু āĻĒ্ā§°āϤিāϟো āϏ্āϤ⧰⧰ āĻŦিāĻļেāώāϤ্āĻŦāĻŦোā§° āϚāĻŽুāĻ•ৈ āϞিāĻ–āĻ•।

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4. Discuss with example the factors responsible for variation in atmospheric pressure.

āωāĻĻাāĻšā§°āĻŖāϏ্āĻŦā§°ূāĻĒে āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞীāϝ় āϚাāĻĒā§° āϤাā§°āϤāĻŽ্āϝ⧰ āĻŦাāĻŦে āĻĻাāϝ়āĻŦāĻĻ্āϧ āĻ•াā§°āĻ•āĻŦোā§° āφāϞোāϚāύা āϕ⧰āĻ•।

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5. With the help of diagram discuss the characteristics of the major pressure belts of the world.

āύāĻ•্āϏাā§° āϏāĻšাāϝ়āϤ āĻĒৃāĻĨিā§ąীā§° āĻŽুāĻ–্āϝ āϚাāĻĒ āĻŦেāϞ্āϟāĻŦোā§°ā§° āĻŦিāĻļেāώāϤ্āĻŦāĻŦোā§° āφāϞোāϚāύা āϕ⧰āĻ•।

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6. Write the importance of atmosphere towards creation of a favourable physical environment on the earth.

āĻĒৃāĻĨিā§ąীāϤ āĻāĻ• āĻ…āύুāĻ•ূāϞ āĻ­ৌāϤিāĻ• āĻĒā§°িā§ąেāĻļ āϏৃāώ্āϟিā§° āĻĻিāĻļāϤ āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞ⧰ āĻ—ুā§°ুāϤ্āĻŦ āϞিāĻ–āĻ•।

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7. What is wind? Discuss the factors of origin of wind.

āĻŦāϤাāĻš āĻ•ি? āĻŦāϤাāĻšā§° āĻ‰ā§ŽāĻĒāϤ্āϤিā§° āĻ•াā§°āĻ•āĻŦোā§° āφāϞোāϚāύা āϕ⧰āĻ•।

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8. What is the most important reason for the origin of wind? Briefly discuss the factors determining velocity and direction of wind.

āĻŦāϤাāĻšā§° āĻ‰ā§ŽāĻĒāϤ্āϤিā§° āφāϟাāχāϤāĻ•ৈ āĻ—ুā§°ুāϤ্āĻŦāĻĒূā§°্āĻŖ āĻ•াā§°āĻŖ āĻ•ি? āĻŦāϤাāĻšā§° āĻŦেāĻ— āφ⧰ু āĻĻিāĻļ āύিā§°্āϧাā§°āĻŖ āϕ⧰া āĻ•াā§°āĻ•āĻŦোā§° āϚāĻŽুāĻ•ৈ āφāϞোāϚāύা āϕ⧰āĻ•।

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9. What do you mean by 'Coriolis Force'? With the help of diagram briefly describe its contribution in determining the direction of wind.

'āĻ•োā§°িāĻ“āϞিāĻ› āĻĢā§°্āϚ' āĻŦুāϞিāϞে āφāĻĒুāύি āĻ•ি āĻŦুāϜাāϝ়? āύāĻ•্āϏাā§° āϏāĻšাāϝ়āϤ āĻŦāϤাāĻšā§° āĻĻিāĻļ āύিā§°্āϧাā§°āĻŖāϤ āχāϝ়াā§° āĻ…ā§ąāĻĻাāύ āϚāĻŽুāĻ•ৈ āĻŦā§°্āĻŖāύা āϕ⧰āĻ•।

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10. What is meant by 'Pressure Gradient Force'? What is its contribution in air movement.

'āĻĒ্ā§°েāϚাā§° āĻ—্ā§°েāĻĄিāϝ়েāĻŖ্āϟ āĻĢā§°্āϚ'ā§° āĻ…ā§°্āĻĨ āĻ•ি? āĻŦাāϝ়ু āϚāϞাāϚāϞāϤ āχāϝ়াā§° āĻ…ā§ąāĻĻাāύ āĻ•ি।

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11. Briefly discuss the contribution of the earth's gravitational force in air movement.

āĻŦাāϝ়ু āϚāϞাāϚāϞāϤ āĻĒৃāĻĨিā§ąীā§° āĻŽাāϧ্āϝাāϕ⧰্āώāĻŖ āĻļāĻ•্āϤিā§° āĻ…ā§ąāĻĻাāύ⧰ āĻŦিāώāϝ়ে āϚāĻŽুāĻ•ৈ āφāϞোāϚāύা āϕ⧰āĻ•।

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12.What do you mean by naming of wind? How the wind blowing over a place is named?

āĻŦāϤাāĻšā§° āύাāĻŽ āĻĻিāϝ়াā§° āĻĻ্āĻŦাā§°া āφāĻĒুāύি āĻ•ি āĻŦুāϜাāϝ়? āĻāϟা āĻ াāχ⧰ āĻ“āĻĒā§°েā§°ে āĻŦāϤাāĻšā§° āύাāĻŽ āĻ•েāύেāĻĻā§°ে āĻĻিāϝ়া āĻšāϝ়?

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13. How the velocity of wind is determined? What are the units of wind velocity?

āĻŦāϤাāĻšā§° āĻŦেāĻ— āĻ•েāύেāĻĻā§°ে āύিā§°্āϧাā§°āĻŖ āϕ⧰া āĻšāϝ়? āĻŦāϤাāĻšā§° āĻŦেāĻ—ā§° āĻāĻ•āĻ•āĻŦোā§° āĻ•ি?

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14. How the classification of wind is done? Briefly discuss with examples.

āĻŦāϤাāĻšā§° āĻļ্ā§°েāĻŖীāĻŦিāĻ­াāϜāύ āĻ•েāύেāĻĻā§°ে āϕ⧰া āĻšāϝ়? āωāĻĻাāĻšā§°āĻŖā§° āϏৈāϤে āϚāĻŽুāĻ•ৈ āφāϞোāϚāύা āϕ⧰āĻ•।

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15. What do you mean by primary circulation of wind? Show distribution of primary circulations in a diagram. Mention its important characteristics.

āĻŦāϤাāĻšā§° āĻĒ্ā§°াāĻĨāĻŽিāĻ• āĻĒ্ā§°āĻŦাāĻšā§° āĻ…ā§°্āĻĨ āĻ•ি? āύāĻ•্āϏা āĻāĻ–āύāϤ āĻĒ্ā§°াāĻĨāĻŽিāĻ• āϏāĻž্āϚাāϞāύ⧰ āĻŦিāϤ⧰āĻŖ āĻĻেāĻ–ুā§ąাāĻ“āĻ•। āχāϝ়াā§° āĻ—ুā§°ুāϤ্āĻŦāĻĒূā§°্āĻŖ āĻŦৈāĻļিāώ্āϟāĻŦোā§° āωāϞ্āϞেāĻ– āϕ⧰āĻ•।

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16. What is secondary circulation of wind? Discuss its contribution in determining the climate of a place with examples.

āĻŦāϤাāĻšā§° āĻ—ৌāĻŖ āĻĒ্ā§°āĻŦাāĻš āĻ•ি? āωāĻĻাāĻšā§°āĻŖā§° āϏৈāϤে āĻāĻ–āύ āĻ াāχ⧰ āϜāϞāĻŦাāϝ়ু āύিā§°্āϧাā§°āĻŖāϤ āχāϝ়াā§° āĻ…ā§ąāĻĻাāύ⧰ āĻŦিāώāϝ়ে āφāϞোāϚāύা āϕ⧰āĻ•।

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17. What is local wind? Briefly discuss with examples how local wind determining the weather condition of a place.

āϏ্āĻĨাāύীāϝ় āĻŦāϤাāĻš āĻ•ি? āĻāϟা āĻ াāχ⧰ āĻŦāϤ⧰⧰ āϏ্āĻĨিāϤি āύিā§°্āϧাā§°āĻŖ āϕ⧰া āϏ্āĻĨাāύীāϝ় āĻŦāϤাāĻš āĻ•েāύেāĻĻā§°ে āωāĻĻাāĻšā§°āĻŖā§° āϏৈāϤে āϚāĻŽুāĻ•ৈ āφāϞোāϚāύা āϕ⧰āĻ•।

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18. What is a cyclone? What are its types? Mention briefly how it influences the climate of a place?

 āϘূā§°্āĻŖীāĻŦāϤাāĻš āĻ•ি? āχāϝ়াā§° āĻĒ্ā§°āĻ•াā§°āĻŦোā§° āĻ•ি? āϚāĻŽুāĻ•ৈ āωāϞ্āϞেāĻ– āϕ⧰āĻ• āϝে āχ āĻ•েāύেāĻ•ৈ āĻ াāχāĻāĻ–āύ⧰ āϜāϞāĻŦাāϝ়ুāĻ• āĻĒ্ā§°āĻ­াā§ąিāϤ āϕ⧰ে?

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19. what is an air mass? How it is classified? What is its contribution in determining the climate of a place?

āĻŦাāϝ়ুā§° āĻ­ā§° āĻ•িāĻŽাāύ? āχāϝ়াāĻ• āĻ•েāύেāĻĻā§°ে āĻļ্ā§°েāĻŖীāĻŦāĻĻ্āϧ āϕ⧰া āĻšāϝ়? āĻāĻ–āύ āĻ াāχ⧰ āϜāϞāĻŦাāϝ়ু āύিā§°্āϧাā§°āĻŖ āϕ⧰াāϤ āχāϝ়াā§° āĻ…ā§ąāĻĻাāύ āĻ•ি?

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20. What do you mean by 'Front'? How it is formed? Briefly discuss the relationship between climate and front.

āφāĻĒুāύি 'āĻĢ্ā§°āĻŖ্āϟ' āĻŦুāϞি āĻ•ি āĻŦুāϜাāϝ়? āχāϝ়াāĻ• āĻ•েāύেāĻĻā§°ে āĻ—āĻ āύ āϕ⧰া āĻšāϝ়? āϜāϞāĻŦাāϝ়ু āφ⧰ু āϏāύ্āĻŽুāĻ–ā§° āĻŽাāϜ⧰ āϏāĻŽ্āĻĒā§°্āĻ• āϚāĻŽুāĻ•ৈ āφāϞোāϚāύা āϕ⧰āĻ•।

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21. What do you mean by 'Monsoon Wind'? How it is formed? In which areas of the earth its impact is quite distinct?

'āĻŽৌāϚুāĻŽী āĻŦāϤাāĻš' āĻŦুāϞি āϞে āφāĻĒুāύি āĻ•ি āĻŦুāϜাāχāĻ›ে? āχāϝ়াāĻ• āĻ•েāύেāĻĻā§°ে āĻ—āĻ āύ āϕ⧰া āĻšāϝ়? āĻĒৃāĻĨিā§ąীā§° āĻ•োāύāĻŦোā§° āĻāϞেāĻ•াāϤ āχāϝ়াā§° āĻĒ্ā§°āĻ­াā§ą āĻāĻ•েāĻŦাā§°ে āĻĒৃāĻĨāĻ•?

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22. Write with reasons :

āĻ•াā§°āĻŖā§° āϏৈāϤে āϞিāĻ–āĻ•:

(a) Why do all weather phenomena occur mainly in troposphere?

āϏāĻ•āϞো āĻŦāϤ⧰⧰ āĻĒā§°িāϘāϟāύা āĻŽুāĻ–্āϝāϤঃ āϟ্ā§°োāĻĒোāϏ্āĻĢিāϝ়াā§°āϤ āĻ•িāϝ় āϘāϟে?

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(b) What would be the consequence of the increase in the amount of carbon dioxide?

āĻ•াā§°্āĻŦāύ āĻĄাāχ āĻ…āĻ•্āϏাāχāĻĄā§° āĻĒā§°িāĻŽাāĻŖ āĻŦৃāĻĻ্āϧিāĻšোā§ąাā§° āĻĒā§°িāĻŖাāĻŽ āĻ•ি āĻš'āĻŦ?

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(c) What is the behind the prevalence of high pressure of dry air than moist air?

āφ⧰্āĻĻ্ā§° āĻŦাāϝ়ুāϤāĻ•ৈ āĻļুāĻ•াāύ āĻŦাāϝ়ুā§° āωāϚ্āϚ āϚাāĻĒā§° āĻĒ্ā§°āϚāϞāύ⧰ āφঁā§°āϤ āĻ•ি āφāĻ›ে?

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(d) How does the ozone layer help the living-beings?

āĻ“āϜোāύ āϏ্āϤ⧰ে āϜীā§ą-āϜāύ্āϤুāĻ• āĻ•েāύেāĻĻā§°ে āϏāĻšাāϝ় āϕ⧰ে?

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(e) Why is the air pressure highest at the sea level?

āϏাāĻ—ā§° āĻĒৃāώ্āĻ āϤ āĻŦাāϝ়ুā§° āϚাāĻĒ āĻ•িāϝ় āϏ⧰্āĻŦাāϧিāĻ•?

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(f) What is the reason behind variation in vertical extent of the troposphere in the polar region and equatorial region?

āĻŽেā§°ু āĻ…āĻž্āϚāϞ āφ⧰ু āĻŦিāώুā§ąীāϝ় āĻ…āĻž্āϚāϞāϤ āϟ্ā§°োāĻĒোāϏ্āĻĢিāϝ়াā§°ā§° āωāϞāĻŽ্āĻŦ āĻĒā§°িāϏ⧰⧰ āϤাā§°āϤāĻŽ্āϝ⧰ āĻ•াā§°āĻŖ āĻ•ি?

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(g) Why is the horizontal movement of wind parallel to the r=earth's surface not felt in the equatorial low pressure belt?

āĻŦিāώুā§ąীāϝ় āύিāĻŽ্āύ āϚাāĻĒ āĻŦেāϞ্āϟāϤ āφ⧰=āĻĒৃāĻĨিā§ąীā§° āĻĒৃāώ্āĻ ā§° āϏāĻŽাāύ্āϤ⧰াāϞāĻ­াā§ąে āĻŦāϤাāĻšā§° āĻĒāĻĨাāϞি āϚāϞাāϚāϞ āĻ•িāϝ় āĻ…āύুāĻ­ā§ą āϕ⧰া āύāĻšāϝ়?

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23. Give short answer to the following questions :

āύিāĻŽ্āύāϞিāĻ–িāϤ āĻĒ্ā§°āĻļ্āύāĻŦোā§°ā§° āϚāĻŽু āωāϤ্āϤ⧰ āĻĻিāϝ়āĻ•:

(a) What is the vertical extent of the atmosphere?

āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞ⧰ āωāϞāĻŽ্āĻŦ āĻĒā§°িāϏ⧰ āĻ•িāĻŽাāύ?

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(b) Up to what altitude from the earth's surface does chemical composition of gases remain almost same?

āĻĒৃāĻĨিā§ąীā§° āĻĒৃāώ্āĻ ā§° āĻĒā§°া āĻ•িāĻŽাāύ āωāϚ্āϚāϤাāϞৈāĻ•ে āĻ—েāϛ⧰ ā§°াāϏাāϝ়āύিāĻ• āĻ—āĻ āύ āĻĒ্ā§°াāϝ় āĻāĻ•ে āĻĨাāĻ•ে?

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(c) What is the name of the boundary between homosphere and heterosphere?

āĻšোāĻŽোāϏ্āĻĢেāϝ়াā§° āφ⧰ু āĻšেāϟেā§°োāϏ্āĻĢেāϝ়াā§°ā§° āĻŽাāϜ⧰ āϏীāĻŽাā§° āύাāĻŽ āĻ•ি?

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(d) What is Ferrell's Law?
 
āĻĢেā§°েāϞ⧰ āύিāϝ়āĻŽ āĻ•ি?

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(e) What is Beaufort Scale? Write briefly about the utility of this scale with example.

āĻŦিāωāĻĢā§°্āϟ āϏ্āĻ•েāϞ āĻ•ি? āωāĻĻাāĻšā§°āĻŖā§° āϏৈāϤে āĻāχ āϏ্āĻ•েāϞ⧰ āωāĻĒāϝোāĻ—িāϤাā§° āĻŦিāώāϝ়ে āϚāĻŽুāĻ•ৈ āϞিāĻ–āĻ•।

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(f) Write in brief about Lapse Rate.

āϞেāĻĒāϚ ā§°েāϟ⧰ āĻŦিāώāϝ়ে āϚāĻŽুāĻ•ৈ āϞিāĻ–āĻ•।

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24. Write short note :

āϚāĻŽু āϟোāĻ•া āϞিāĻ–āĻ• :

(a) Homosphere 

āĻšোāĻŽোāϏ্āĻĢেāϝ়াā§° 

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(b) Heterosphere

āĻšেāϟেā§°োāϏ্āĻĢেāϝ়াā§°

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(c) Air temperature, earth's surface height and air pressure relationship 

āĻŦাāϝ়ুā§° āωāώ্āĻŖāϤা, āĻĒৃāĻĨিā§ąীā§° āĻĒৃāώ্āĻ ā§° āωāϚ্āϚāϤা āφ⧰ু āĻŦাāϝ়ুāϚাāĻĒā§° āϏāĻŽ্āĻĒā§°্āĻ• 

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(d) Polar High Pressure Belt

āĻĒোāϞাā§° āĻšাāχ āĻĒ্ā§°েāϚাā§° āĻŦেāϞ্āϟ

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(e) Wind system

āĻŦাāϝ়ু āĻĒ্ā§°āĻŖাāϞী

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(f) Pressure Gradient

āĻĒ্ā§°েāϚাā§° āĻ—্ā§°েāĻĄিāϝ়েāύ্āϟ

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(g) Trade wind

 āĻŦাāĻŖিāϜ্āϝ āĻŦāϤাāĻš

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(h) Horse Latitude

āϘোঁā§°াāĻ…āĻ•্āώাংāĻļ

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(i) Rearing Forties

āϚāϞ্āϞিāĻļā§° āĻĻāĻļāĻ• āĻĒ্ā§°āϤিāĻĒাāϞāύ āϕ⧰া

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(j) Anticyclone 

āĻāĻŖ্āϟিāϚাāχāĻ•্āϞোāύ 

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(k) Jet Stream 

āϜেāϟ āϏ্āϟ্ā§°িāĻŽ 

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(l) Isobar

āφāχāϚোāĻŦাā§°

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(m) Tropical Cyclone

 āĻ•্ā§°াāύ্āϤীāϝ় āϘূā§°্āĻŖীāĻŦāϤাāĻš

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25. Write the differences : 

āĻĒাā§°্āĻĨāĻ•্āϝāĻŦোā§° āϞিāĻ–āĻ•: 

(a) Horizontal wind and vertical cyclone 

āĻĒāĻĨাāϞি āĻŦāϤাāĻš āφ⧰ু āωāϞāĻŽ্āĻŦ āϘূā§°্āĻŖীāĻŦāϤাāĻš

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(b) Wind and Air mass

āĻŦāϤাāĻš āφ⧰ু āĻŦাāϝ়ুā§° āĻ­ā§°

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(c) Tropical cyclone and Extra-tropical cyclone

āĻ•্ā§°াāύ্āϤীāϝ় āϘূā§°্āĻŖীāĻŦāϤাāĻš āφ⧰ু āĻ…āϤিā§°িāĻ•্āϤ āĻ•্ā§°াāύ্āϤীāϝ় āϘূā§°্āĻŖীāĻŦāϤাāĻš

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(d) Sea breeze and Land breeze

 āϏাāĻ—ā§°ীāϝ় āĻŦāϤাāĻš āφ⧰ু āĻ­ূāĻŽি āĻŦāϤাāĻš

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(e) Mountain wind and valley wind 

āĻĒā§°্āĻŦāϤāĻŦāϤাāĻš āφ⧰ু āωāĻĒāϤ্āϝāĻ•াā§° āĻŦāϤাāĻš 

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(f) Cyclone and Anticyclone 

āϘূā§°্āĻŖীāĻŦāϤাāĻš āφ⧰ু āϘূā§°্āĻŖীāĻŦāϤাāĻš āĻŦিā§°োāϧী 

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(g) Cold Front and Warm Front

āĻ•োāϞ্āĻĄ āĻĢ্ā§°āĻŖ্āϟ āφ⧰ু ā§ąাā§°্āĻŽ āĻĢ্ā§°āĻŖ্āϟ

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(h) Cold wave and Hot Wave

āĻ াāĻŖ্āĻĄা āĻĸৌ āφ⧰ু āĻ—ā§°āĻŽ āĻĸৌ

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(i) Troposphere and Stratosphere 

āϟ্ā§°োāĻĒোāϏ্āĻĢেāϝ়াā§° āφ⧰ু āώ্āϟ্ā§°েāϟোāϏ্āĻĢেāϝ়াā§° 

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26. Find out the correct answer :

āϏāĻ িāĻ• āωāϤ্āϤ⧰āϟো āĻŦিāϚাā§°ি āωāϞিāϝ়াāĻ“āĻ•:

(a) Where is Ozone layer located?

āĻ“āϜোāύ āϏ্āϤ⧰ āĻ•'āϤ āĻ…ā§ąāϏ্āĻĨিāϤ?

(1) Troposphere                        (2) Stratosphere
āϟ্ā§°োāĻĒোāϏ্āĻĢেāϝ়াā§°                           āώ্āϟ্ā§°েāϟোāϏ্āĻĢেāϝ়াā§° 

(3) Mesosphere                         (4) Thermosphere
āĻŽেāϚোāϏ্āĻĢেāϝ়াā§°                             āϤাāĻĒāĻŽāĻŖ্āĻĄāϞ

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(b) What is amount of oxygen in the atmosphere in terms of volume?

āφāϝ়āϤāύ⧰ āĻšিāϚাāĻĒāϤ āĻŦাāϝ়ুāĻŽāĻŖ্āĻĄāϞāϤ āĻ…āĻ•্āϏিāϜেāύ⧰ āĻĒā§°িāĻŽাāĻŖ āĻ•িāĻŽাāύ?

(1) 20.94%                            (2) 29.01%
⧍ā§Ļ. ⧝ā§Ē āĻļāϤাংāĻļ                     ⧍⧝.ā§Ļā§§ āĻļāϤাংāĻļ

(3) 32.47%                             (4) 78.08%
ā§Šā§¨.ā§Ēā§­ āĻļāϤাংāĻļ                       ā§­ā§Ž.ā§Ļā§Ž āĻļāϤাংāĻļ

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(c) The most important reason for air movement is

āĻŦাāϝ়ু āϚāϞাāϚāϞ⧰ āφāϟাāχāϤāĻ•ৈ āĻ—ুā§°ুāϤ্āĻŦāĻĒূā§°্āĻŖ āĻ•াā§°āĻŖ āĻšৈāĻ›ে

(1) Humidity difference                (2) Pressure difference
  āφ⧰্āĻĻ্ā§°āϤাā§° āĻĒাā§°্āĻĨāĻ•্āϝ                           āϚাāĻĒā§° āĻĒাā§°্āĻĨāĻ•্āϝ

(3) Gravitational Force                 (4) Centrifugal Force
āĻŽāĻšাāϕ⧰্āώāĻŖীāϝ় āĻļāĻ•্āϤি                            āϚেāĻŖ্āϟ্ā§°িāĻĢুāĻ—াāϞ āĻĢā§°্āϚ

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(d) The instrument used for determination of wind velocity is 

āĻŦāϤাāĻšā§° āĻŦেāĻ— āύিā§°্āϧাā§°āĻŖā§° āĻŦাāĻŦে āĻŦ্āĻ¯ā§ąāĻšৃāϤ āϏঁāϜুāϞিāϟো āĻšৈāĻ›ে 

(1) Wind vane                    (2) Anemometer
ā§ąিāĻŖ্āĻĄ āĻ­েāύ                            āĻāύিāĻŽোāĻŽিāϟাā§°

(3) Beaufort scale               (4) Hydrometer
āĻŦিāωāĻĢোā§°্āϟ āϏ্āĻ•েāϞ                     āĻšাāχāĻĄ্ā§°āĻŽিāϟাā§°

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(e) The unit of wind velocity is 

āĻŦāϤাāĻšā§° āĻŦেāĻ—ā§° āĻāĻ•āĻ• āĻšৈāĻ›ে 

(1) Knot                        (2) Milibar
 āĻ—াঁāĻ ি                               āĻŽিāϞিāĻŦাā§°

(3) Percentage               (4) Degree
āĻļāϤাংāĻļ                           āĻĄিāĻ—্ā§°ী

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(f) Monsoon wind belongs to which of the following class?

āĻŽৌāϚুāĻŽী āĻŦāϤাāĻš āύিāĻŽ্āύāϞিāĻ–িāϤ āĻ•োāύāϟো āĻļ্ā§°েāĻŖীā§°?

(1) Local winds                    (2) Primary circulation
āϏ্āĻĨাāύীāϝ় āĻŦāϤাāĻš                          āĻĒ্ā§°াāĻĨāĻŽিāĻ• āĻĒ্ā§°āϚāϞāύ

(3) Secondary circulation      (4) Permanent wind
āĻ—ৌāĻŖ āĻĒ্ā§°āϚāϞāύ                             āϏ্āĻĨাāϝ়ী āĻŦāϤাāĻš

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(g) The name of the cyclone formed in the coastal region of the Pacific Ocean in the east is

āĻĒূāĻŦে āĻĒ্ā§°āĻļাāύ্āϤ āĻŽāĻšাāϏাāĻ—ā§°ā§° āωāĻĒāĻ•ূāϞীāϝ় āĻ…āĻž্āϚāϞāϤ āϏৃāώ্āϟি āĻšোā§ąা āϘূā§°্āĻŖীāĻŦāϤাāĻšā§° āύাāĻŽ āĻšৈāĻ›ে

(1) Cyclone                       (2) Hurricane
 āϘূā§°্āĻŖীāĻŦāϤাāĻš                             āĻšাā§°িāĻ•েāύ

(3) Willy-Willy                 (4) Typhoon
āωāχāϞি-ā§ąিāϞি                        āϟাāχāĻĢুāύ

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Questions Type- Janmoni Hazarika




Post Id:DABP002366