Distribution of Oceans and Continents - Chapter 4 Geography NCERT Class 11

Lecture video, notes, summary on Distribution of Oceans and Continents - Chapter 4 Geography NCERT books Class 11 | Part 2 - Fundamentals of Physical Geography. It will help you for revision, note making for upsc csat ias, school and competitive exams.
continental drift theory
plate tectonics
abraham ortelius theory
earth plates
wegener's evidence
ncert solutions
cbse
Video on different layers of the earth @ 5:15
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Video on continental drift theory by Alfred Wegener @ 1:44 & 3:51
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Evidences of continental drift theory @ 1:48
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You can also view playlists of other NCERT Geography videos:-
Class 6 - goo.gl/DDFtIF
Class 7 - goo.gl/ppPK05
Class 8 - goo.gl/OD3Gwh
Class 9 - goo.gl/AIEXxQ
Class 10 - goo.gl/inWIAR
Class 11 - goo.gl/Pn5EIE
Class 11 (Part 2) - goo.gl/X4zY9K
Class 12 - goo.gl/Kszpz5

[@anuragupadhyay3112]

At 20:49.. It is the heavier plate that subsides not the lighter plate.. (Note: Oceanic plate is made of basalt and is heavier than the Continental plate which is made of Granite) In convergent plate tectonics, we have 3 cases : Case 1. Ocean Plate- Continent plate convergence : Here the Oceanic plate being heavier subsides beneath the continental plate. The subducted part of the oceanic plate goes into the asthenosphere and due to high heat in the asthenosphere, the oceanic plate melts and its volume increases( density decreases), thereby due to high volume and low density, the magma comes out of the earth's crust from fissures forming island arcs. Trenches are also formed at the point(all along the oceanic and continential plate convergence) where oceanic plate subsides beneath the continental plate. Eg: The Nazca (and, to a lesser extent, Antarctic) plate subducting under the South American Plate, meanwhile, uplifted the Andes and peppered that towering range with volcanoes. Case 2. Oceanic plate- Oceanic plate convergence : Both plates being heavier ( made of basalt) will push each other, but the heaviest plate will subside forming island arcs and trenches as explained above. An example of an oceanic/oceanic convergent boundary is that between the Pacific and Mariana plates, which includes the Mariana Islands arc and a subduction zone encompassing the Mariana Trench, the deepest part of the World Ocean. Case 3: Continental plate- Continental plate convergence: As both plates being lighter( made of granite), none will subside. Both will push against each other, and as none subsides, they will result into fold mountains. ( Jab koi plate niche ni ja skti ek dusre ke against push karke, to common sense kehta hai wo upar ko fold hojayengi) eg: The classic example of a continental/continental convergent boundary is the rumpled overlap where the Indian Plate drives into the Eurasian Plate, a tectonic collision that has thrown up the greatest mountains in the world - the Himalayas - as well as the vast, high Tibetan Plateau. To the west, the Alps grew in similar fashion via the collision of the African and Eurasian plates. Mujhe clear ni hua tha amit bhai ka video dekh k ye topic so I had researched a lot and wrote all this so that i can help someone.. Do thank me 😛

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[@haanumman]

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[@ashishpoonia7736]

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[@aayushibawaria4695]

Sir is saying that trenches occur at divergent boundary @9:04 but I've read they occur at convergent boundaries what do you think is it correct?

[@anuragupadhyay3112]

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[@juhisharma4798]

While explaining earthquake and volcano you did not mention even once that it's called Ring of Fire....which is a very important point you missed

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😢yeah recently kpsc asked about ring of fire "how many countries surrounding

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In which exam Raashmi?

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[@Rajatkumar-ls3jj]

Great video Sir. But @6:43 I would like to mention that the trenches are formed when plates move towards each other and not apart! When they move apart, they make mid oceanic ridge. And thank you for the beautiful lecture, sir!

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[@nabinbhagat3665]

Thank You very much sir for uploading the video today was my exam and a question came about describing the continental drift theory proposed by Alfred Wegner.In the morning today at around 2 o clock I saw your video and it helped me a lot.Once again Thank You very much.I will keep attending your classes from the next session.

[@bharatishukla1358]

Beautifully explained....cleared my concepts....thank a ton :)

[@voyager5721]

20:49 In all types of convergence, the denser plate subducts, and the less dense plate is either up thrust or folded or both (upthrust and folded). 6:47 Trenches are formed in Convergent Boundaries/subduction zone.

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[@John-do9to]

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Geography is not dull it all depends on you that how you take it

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clear and specific to the point explanation. Thanks!

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Is this helped?

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I was studying the chapter just a day before the examination, but still, after I started to watch the video all my queries were solved in no time. And also ended up scoring the highest in geography in all of the eleventh standards. Thank you😊

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sir i am very greatful to u for such a interactive lecture .This video is not less than a lifeline for my soon upcoming exams.once again thank u very much . please keep it up such nice initiative.

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Lesson was great help. Thank you.

[@ir.shorts4]

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Awesome class sir. Being a science student I found it so so boring and difficult to understand this chapter. You made it so simple. And also you speak like a foreigner 🙂. Thank you sir

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Althaf shameel As a student of science background i want to say , geography is a science. For a better understanding of Geography you have to clear your concept in science that made easy learn Geography quickly lipstick and example of rain for Rane you have to know what is evaporation conviction condensation so try to relate science and geography together you don't feel it bore anymore ☺️

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[@shekhardarandale7038]

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I love these kind of lectures...koi faltu bakwas nhi😉..they really respect our time

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sir , you give a best explation to us with the help of diagram also

[@swathivalappil9109]

Crystal clear presentation 👏

[@shrutisahay4738]

Thanks for an amazing explanation.😍 Its really going to help everyone

[@thevegeta7702]

Amit sir you have done a remarkable job...one of the best ever explainations with illustrations...with due respect...but one mistake is there in Oceanic Trenches...deep Ocean trenches are are formed due to convergent boundaries..not by divergent plates.....basically..when two plates converge out of which heavier plate subduct into the lighter one...and when this happens Trenches forms. Thank you. UPSC 2019 mains qualified. Personality Test awaiting..

[@prajwalsharma248]

i was looking for this explanation, thanks to you :) Hope you succeeded in the personality test ? Thanks from bottom of my heart to Amit Sir :-)

[@thevegeta7702]

@@prajwalsharma248 hard luck this time for me...got final merit out ! ...but I made it to UP Sub Inspector but..Again going to appear in Mains from 8th January.......I think police...I live police..I dream police...i eat police...i drink police... purpose of my life is an IPS..!

[@prajwalsharma248]

@@thevegeta7702 Oh great bro...many many congratulations for clearing the prelims and UP SI..all the very best for mains.. i also gave the prelims but failed again..was scoring 93-96 marks...will you mind sharing your strategy(esp. current affairs) ?, i ll be really thankful..whenever u find little time in your day

[@thevegeta7702]

@@prajwalsharma248Thank you so much dear..!....I hv noted you mail id ...(so you can delete your I'd now) I'll mail you soon may be by today or tomorrow.. actually I am going back to my home to meet my mom on Diwali.!! ..93-96 is a good score...it means you gonna crack it soon...Hope you achieve your dream.! ...Work Hard okay...and never worry...👍👍👍👍 I'll mssg/mail you soon !

[@prajwalsharma248]

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[@halimurrashid6114]

I am a student of geology this video help me to clear my doubts thank for this video

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Dear Sir Your video has everything which a student can ask for. The vast amount of knowledge you have is supreme. The only thing is which i want you to consider is that in some topics give a detailed explanation even if the video goes long because as a non geography student it is very difficult to understand these topics

[@AnuragSrivastavaIITR]

Simply amazing. Thank you very much sir

[@shikhadubey8111]

thanks sir waiting for your video on Landforms and their evoultion

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thank you sir for making such a wonderful video its worth watching

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Sir i don't Know how to express my gratitude for u for this geography lessons. Was facing problem in this book. Ppl suggested to watch Mrunal vedios but i found the language of mixing Hindi n English quite problematic as im from NE India who is preparing from hometown n nvr been to Delhi. But trust me i found this vedio today itself n since afternoon I'm listening to u n it feels like geography has nvr been so easy. I'm so thankful. Will be revising Ur vedios till 2020 UPSC exam ends. I wish u all blessings of the world. You have no idea what a great contribution u r doing.

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N yeah! If i clear the exam n get the opportunity to share my strategy then definitely your channel will be my top strategy. Thanks a lot.

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Your videos are very helpful.Thank you.

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sir yesterday was my exam and this video helped me alot thank you for uploading this video

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great effort done thank u so much sir

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great explanation ,very helpfull

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Wow super even south indian stdnts also easily can understand.tnk so much sir

[@imrahul9653]

One doubt During the rate of plate movement u said there is a arrangement of wires with some tension and when the plate moves it increases But my doubt is that set up is on one plate itself and when plate is moving there won't be any movement between the two points of the same plate isn't ??? Plz clarify

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Heard a lot about you but didn't listen to you till now I was so confused after reading ncert this video made me to understand better thanks

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Thank you sir very very thank. You made this chapter very easy.

[@shahnazkhatoon435]

23:04 it is the soft mantle and the circular flow of heated material inside the earth which is the ............ force behind the plate movement. Can anyone fill the gap by watching the video at the time mentioned here.

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thank u sir ...provide full series of 11 class fundamental geography

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Sir , your explanation is very unique as well as amazing👍

[@shaludayma1940]

good lecture ..🙂

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I understood each and every word. Thankyou

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Good evening sir .... you made my preperation more effective thank you so much sir 🙏

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Thanks sir you are my best teacher in geography

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it is fab😊😊.... thanks a lot, it's easy to understand and now all my doubts are finished😇😇

[@046_mohitranjansingh7]

Simply perfect nd to the point.

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sir you are doing a very great job..please keep up your work you are helping a large number of students with your videos. god bless you sir! RISE AND SHINE

[@dopaminedetox929]

Sea floor spreading missing ,You ate intrusive volcanic landforms in previous chapter

[@shivaprasad-vd7qf]

very good presentation sir, thank u very much