NCERT Class 7 Geography Chapter 4: Air (Examrace -Dr.Manishika) | English | CBSE

[@Examrace]

Errata in Diagram: COMPOSITION OF ATMOSPHERE nitrogen-78%,oxygen-21% and remaining 1%.

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Hi

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[@justforyou6847]

Mam 1% are other gases

[@aaganyasingh5011]

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Thank you ma'am it is very clear and precise✔

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you are my favourite teacher

[@NamruthaKodekanti]

Thank you for your explanation mam and explanation of our past and social political life please please mam

[@tusharv9784]

very nice explanation but oxygen is 21% 0:46

[@Nanakclassesenglish]

Thanku ma'am, It was very helpful for me in lock down 😊

[@paaminir9861]

Correct

[@Nanduveena143]

Correct

[@IAKhan-km4ph]

Dear Miss, I am a teacher from Pakistan. I am so much thankful to you and to your team for providing such a valuable place where students and teachers can learn. I personally learn a lot from your lectures especially in Geography, Geo morphology and statistics. I would like to thank you again for your hard working, life is unpredictable so I feel to say thanks. Regards Imran Ahmed Khan

[@Examrace]

If you want special session to be organized for students at your institution, please connect to [e-mail]

[@IAKhan-km4ph]

@@Examrace I will look that. Official requirements etc.

[@a.mgaming7670]

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Mam, your explanation is very good. I understood everything you taught.

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Mam very good explanation. I have understood all the topics ☺

[@PoonamSharma-uj1fz]

Very nyc teaching. It helps me and I hope it will help others bcoz she is explaining very nyc and best . Thank you so much and maam plz come up with more interesting chapters. I will wait for more.Once again thank you so so so much....🤝🤝🤝

[@dr.ruchikajoshi1488]

Ma'am the video is very informative ....... Thank you very much

[@pankajverma1200]

You are a very good teacher thank u

[@praveen5742]

Your video help me so much for my upcoming online exam

[@sunitasahu326]

Thank u ma'am I understood the whole chapter

[@vinitff530]

very good👍 thank ma'am

[@artandcraftwithkitchenidea5619]

Thank you ma'am 👍👍 👍

[@deepesh.tdeepesh3791]

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Which school??

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Mam thanks for teaching.

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[@goldyff2326]

mam really you are so good at teaching thanks mam by jayant

[@rajpratapsingh9755]

Mam, how does pressure decreases with increase in temperature??

[@ramsharan321]

Ma'am ur explanation is very well, that after taking help from ur video i have no doubts of that particular topic....

[@sureshlakkannavar5584]

Your teach is very nice I understand everything mam

[@manjuaggrwal4611]

Thanks ma'am for a good lecture

[@parashbharadwaj5136]

#good mam

[@OPDalmia]

Amazing video helping alot in preparing for exams

[@adityadutte7998]

Please

[@srishtisingh7262]

Nice mam

[@adyashamitra3638]

Mam your teaching is very good

[@jyotichaudhary4182]

Ma'am the only thing I have not understood is why the climate will be clear in high pressure area and cloudy in low pressure area. I am mayra studying in class 7.. Can u pls. tell me the link where I can clear this doubt.. Thanx ma'am. 🙏🙏

[@JayaLakshmi-sv8ul]

Mam which I thought us is helpful in me exams.. thank you mam

[@shloksvlogshavefun5522]

How does humidity affect us?

[@jasminesingha1120]

thank you mam for the lecture.. your question related to pressure changes beneath the ocean is a nice question, so basically I am an open water diver, and discovered a concept that that pressure changes more rapidly the closer a diver is to the surface. As we all know that pressure increases with depth, more deeper we dive more pressure exerts from the body. Air in a diver's body air spaces and dive gear will compress as pressure increases (and expand as pressure decreases). Air compresses according to Boyle's Law. As pressure changes, we can feel inside the body functions, so to balance the overall thingy, we must equalize, make balance in the body. If we are unable to maintain or balance the pressure then our Lungs mainly might get collapse. The tissues of the diver's body causes to absorb more nitrogen gas than they would normally contain at the surface during increase in pressure, If a diver ascends slowly, this nitrogen gas expands bit by bit and the excess nitrogen is safely eliminated from the divers tissues and blood and released from his body when he exhales. If the diver's haphazardly tries to dive or ascend faster then the nitrogen will expand and will not be able to eliminate from the tissue, and ultimately it will start to form bubbles in the tissue and blood stream. the presence of these nitrogen bubbles might cause Decompression Sickness (DCS), by blocking blood flow to various parts of the body, causing strokes, paralysis, and other life threatening problems.

[@crazyqueen6021]

Name:tehzeeb Class:7th Roll no:05 Sec:A

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Hiya Borah 7 b Roll no 27

[@bundelafebricsramgarhshekh2828]

please make video of light for class 7 in science

[@richabhatnagar1462]

Yes mam plz plz

[@amanchandra3932]

Mam your explantion is very good

[@laharib.t8178]

Thank u mam 🙏, but I cant see what is writen in board mam..🙏👍

[@JalilKhan-tj2jk]

This chapter is so intersting so thank you very much mam

[@sankarlingala4380]

Thank you mam B/w means

[@sankarlingala4380]

Mam i don't know it's meaning please clearfy about b/w

[@Examrace]

between

[@sohamacharya3821]

Ma'am your explanation is very nice .

[@yaminimeshram8194]

Mam as everyone know that during lockdown online classes are started an it's difficult to understand in classes but when you explain its very understanding for us thank you ☺️😊

[@prajjwalupadhyayiit]

Ma'am Excellent explanation.... Really awesome..... Appreciable teaching... Ma'am...m

[@ophunteryt6972]

Madam what is b/w that you use frequently?

[@Examrace]

b/w means between

[@shivanijangir4324]

@@Examrace mam plz write big letters and screen view is small plz zoom them ...

[@ashpikachu804]

Very nice video super useful easy to understand thank you ma'am

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Awesome 🌹🌹

[@manimegalai6609]

Akka what board this?

[@aju6392]

Hi,ma'am the question put forward by you regarding the human body in deep ocean is answered . Deep beneath the ocean pressure is high and water fills any air gap left out, as nitrogen dissolves easily in water and air is mostly made of nitrogen. the pressure n filling of air gap forces water into mouth and fills the lungs and so lungs collapse or that our body suffocates when nitrogen dissolves.

[@Kirti._Singh]

mam is nitrogen very harmful for our body????

[@rashmipriya5782]

Actually when we breathe we take nitrogen in small amout

[@deepakkumarkaim8861]

how do leaves of co2 increse in the atmosphere

[@deepakkumarkaim8861]

can you plz tell maam

[@Nirmal_singh02]

It is stomata in leaves that is important for exchanging tthe gases

[@manjarikhare629]

I like ur way of teaching

[@kabangkabang5124]

Thanks for new explanation

[@ArunKumar-io5zy]

OMG you are best thanks mam

[@Saitama_rmx]

Who else are here 1 day before exam 😂😂 👇

[@asharaki7079]

Mam in the video you have mentioned some of the video link but the link is not available...

[@92_divyamishra74]

😂😋

[@ramkaran6243]

Maam you sometime do not puts that link in description box,I suggest for better reference it should be in that.

[@nishithprasad4769]

6:07 its 2 trillion

[@AmitKumar-yx4wu]

Maam what is the meaning of meteoroids

[@ankushdhamija5040]

Meteroid are stone like structure which orbit around the sun similar to Earth

[@venkadasubbuvijayakumar7740]

Mam I can understand your video clearly. Thank you mam.

[@neha_sneha7825]

Thank you mam for made geography video 👍👍👍👍

[@adhyasha_2487]

Amazing session 😄

[@divyadivi5163]

is it enough for upsc ncerts ...

[@Examrace]

Yes NCERTs + one reference per subject is required

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Mam what does ions do

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[@Examrace]

Solved @ www.flexiprep.com/

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[@ashutoshkumarashu8493]

what is sea level from where it is taken?

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Hello mam please upload geography lectures for class 11.

[@kajalbinzade3244]

thanks mam this video are amazing ...

[@mdshamshadansari3731]

Superb

[@krishnamohanv2297]

Mam can u write the letter big in size Pls..

[@ajaysinghrathore3549]

Every maam should be like you You are amazing maam🙂🙂🙂 Maam what is ionosphere?

[@rdpretty]

It's a layer in Thermosphere through which helps in radio transmission. The radio waves sent from the Earth are sent back by this layer

[@vermasclassesofenglish2814]

Mam keep it up

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Very nice mam

[@jovinjimmy5943]

Won't we have an exosphere also, after the thermosphere?

[@rashmipriya5782]

Thermosphere is last layer . Thermosphere comes in space were oxygen finishes

[@homecraftin5minutes718]

Thank you mam super 👌👌👌👌👌👌👌👌👌 explanation 😊

[@kiranarya3124]

Ma'am can we get notes of this chapter

[@pratikpratik4581]

Madam, Plz help Plz make a playlist for geography (but in sequential manner) The existing playlist is mixed.. Dey r not in sequence (ex. If 1,2,3,4, vedio r on ncert.... Next vedio is on anti cyclone, n next is on geomorphology...) Plz madam, I humbly request Plz provide those in sequential manner UPSC 2017 prelim.. R near by Plz help God bless you Reply soon

[@Examrace]

For videos arranged topicwise refer - www.doorsteptutor.com/Exams/IAS/Mains/Optional/Geography/Videos/

[@pradipsarkar7819]

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[@Dronakon]

As I'm started to watch videos I've noticed that she's become more prettier than ever. Thank you ma'am for all your lectures

[@manishaaggarwal449]

Mam mesosphere extends up to

[@kankshiagrawal1804]

80 km from sea level

[@pallajagadhishwari6097]

Thanks for teaching mam

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[@pritimaheshwari9807]

Thanks a lot mam ! I was able to understand everything you explained . I like the way of explanation .😉😉😉

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This video will helpfully for upsc exam or not,,,,?? Please tell me,,,,,,

[@Examrace]

NCERTs are must for UPSC.

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[@venkadasubbuvijayakumar7740]

Name :Dharshana Class :7 Sec :Vll Roll no :19