Wind
Wind
Wind: Wind is the movement of air (usually in a horizontal direction) in the atmosphere. It is caused by a difference in temperatures between different regions on the Earth.
This temperature difference occurs mainly because of the uneven heating of different parts of the Earth’s surface by the sun.
Thus, the air absorbs different amounts of heat, making it warm in places and cool in others. As air gets warmer, its particles spread out. In other words, air expands on heating. This makes the air lighter, or less dense, so it rises. As air cools, it becomes heavier, or more dense, and sinks.
As warm air rises, air from cooler areas flows in to take the place of the rising air. This sets up a current of air and we call it wind.
a) Uneven heating between the equator and the poles:
The region of Earth receiving the Sun’s direct rays is the equator. Here, air is heated and rises, leaving low pressure areas behind.
Moving to about thirty degrees north and south of the equator, the warm air from the equator begins to cool and sink. Between thirty degrees latitude and the equator, most of the cooling sinking air moves back to the equator.
The rest of the air flows toward the poles. The air movements toward the equator are called trade winds - warm, steady breezes that blow almost continuously.
b) Uneven heating of land and water:
During summer, the land warms up faster near the equator and most of the time the temperature of the land is higher than that of water in the oceans. This results in the heating of air. The heated air rises. This causes the winds to blow from the oceans towards the land. These winds are called monsoon winds.
The word monsoon is derived from the Arabic word ‘mausam’, which means ‘season’. Monsoons blow from the land toward the sea in winter and from the sea toward land in the summer.
India’s winters are cold and dry. The monsoon winds blow from the northeast and carry little moisture.. Most of India lies between the Tropic of Cancer and the equator, so the sun’s rays shine directly on the land.
The summer monsoon comes from the southwest; the winds carry moisture from the Indian Ocean and bring heavy rain from June to September.
On Earth the wind from the North and the South blow towards the equator. From this, we can understand that : | |||
| Right Option : B | |||
| View Explanation | |||
Monsoon winds flow because of uneven heating of land and ___________ | |||
| Right Option : A | |||
| View Explanation | |||
The monsoon winds that carry a lot of water to India come from the __________________ | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [20]
In terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
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Ayan Ghosh
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
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Prisha Gupta
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
