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Discuss classification mountains based on their periods and mode of origin

v neeraja 11th Apr, 2021

Mountains are formed due to large scale movements of the earth's crust and the collision of the tectonic plates. Over the history of earth - 9 such movements have taken plates which have resulted in formation of large mountains and mountain ranges.

On the basis of of their mode of origin, mountains are classified into 2 broad categories:

Original or Tectonic Mountains: These mountains are formed due to larege scale movements in the tectonic plates and the resulting collision and folding of plates. These mountains are further classified into Block mountains, Fold Mountains and Volcanic Mountains.

  • Volcanic Mountains:
    • These mountains are formed due to collision of tectonic plates and movement along the plate boundaries which erupt to formed mountains i.e volcanic activity results in formation of these mountains
    • Molten lava, volcanic bombs, cinders, ashes, dust and liquid mudare tha main components of the mountains
    • Most important types of Volcanic Mountains are : Composite cones or Stratovolcanoes and Shield Volcanoes.
    • Mount Fiji and Khilimanjaro are Stratovolcanoes while Mauna Loa on Hawaii is a Shield Volcano.
    • They are common in the Circum-Pacific belt.
  • Fold Mountains:
    • These are formed due to large scale collision of tectonic plates which results in subduction and folding to form mountains
    • Himalaya, Rockies, Andes, Balkan Mountains, Jura, Zagros mountains are some examples
  • Block Mountains:
    • These are formed When a fault block is raised or tilted.
    • Higher blocks are called horsts and troughs are called grabens
    • Examples include Vindhya Range, Satpura Range, Sierra Nevada Range, Rhila Rhodope mountain range etc.

Residual Mountains:

  • Residual mountains are formed as a result of erosion of an existing elevated area. These are the remnants of old fold mountains derived as a result of denudation (strip of covering).
  • Examples include the Aravalli Range, Nilgiri Mountains, Eastern and Western Ghats.

On the basis of of their period of origin, mountains are classified into 3 broad categories:

Since the formation of earth nine very major mountain movements have taken place. However we will mostly discuss only about the most recent 3 movements and the mountain ranges.

  • Precambrian Mountains were formed during the pre-cambrian period which extended for 4 billion years. They were subjected to upheaval, denundation and metamorphosis due to which they now appear like residual mountains. Examples include Laurentian Mountains
  • Caledonian Mountains (430 million years and 380 million years ago ) were formed due to large scaled tectonic movements. Examples include Appalachians, Aravallis, Mahadeo
  • Hercynian Mountains (approximately 340 million years and 225 million years ago ) include ranges like Ural Mountains .
  • Alpine Mountains (65 million years to 7 million years ago) are the most recent formations and are therefore slightly rugged. Examples include rockies, Alpine, Himalayas etc.

Hope this helps

55 Views

What is the difference between vegetative and asexual mode of reproduction? ( important points ).

Ronak Gala Student Expert 3rd Jan, 2021

Hello,

Vegetative mode of reproduction is a type of Asexual mode of reproduction and it occurs only in plants. It can occur in roots, stem or leaves depending upon the plant. In this type of reproduction new plant is formed from the vegetative part. This type can also be induced artifically. Eg bryophylum, mint, begonia etc

Asexual mode of reproduction occurs in lower animals. There are many modes of Asexual reproduction like budding, fragmentation, fission, spore formation etc. In this way many new organisms are formed. In this mode there is no fusion of gametes. Eg Hydra, algae, amoeba etc

Thanks

21 Views

how to get caste validity certificate in offline mode through college

Ayush 16th Dec, 2020

Hi Candidate,

The Caste Certificate is the document that shows the proof that you belong to a specific kind of Category either it's Other Backward Classes (OBC), Schedule Tribes (ST), Economically Weaker Sections (EWS), Schedule Caste (SC) etc.

The caste validity Certificate means to renew and update the caste certificate from the Magistrate's Office to confirm your Category Certification.

Hope that this answer helps you to.

261 Views

what are the differences between aerobic and anaerobic respiration? name some organisms that use the anaerobic mode of respiration

mr.sudhanshu94 15th Nov, 2020

Dear Aspirant,

Aerobic means with oxygen, vs anaerobic which means without oxygen. It’s usually used to describe what type of cellular respiration is occurring. During aerobic respiration, mitochondria use oxygen as the final electron acceptor during the process of breaking down organic carbon, C6H12O6, aka glucose or sugar. In the process of breaking that molecule down and transferring the hydrogens, H, to oxygen, the mitochondria use the energy released in that transfer to renew adenosine triphosphate, ATP. Under idealized situations the final yield is about 16 ATP per oxygen. This is important because ATP is like the dollar currency of the cell, everything that happens uses ATP.


Anaerobic respiration doesn’t use oxygen. The first two steps of aerobic respiration, which breaks down the 6 carbon sugar to two 3 carbon molecules, produces 2 ATP by itself. Anaerobic respiration stops there, with a net gain of two ATP instead of the aerobic net gain of 16 ATP. It also produces waste products like ethanol or lactic acid.

Certain prokaryotes, including some species of bacteria and archaea, use anaerobic respiration. For example, the group of archaea called methanogens reduces carbon dioxide to methane to oxidize NADH. These microorganisms are found in soil and in the digestive tracts of ruminants, such as cows and sheep.

Examples of aerobic exercise include swimming laps, running, or cycling. Anaerobic exercises involve quick bursts of energy and are performed at maximum effort for a short time. Examples include jumping, sprinting, or heavy weight lifting.

Hope this information helps you,

Thank you .

74 Views

How can the ap government will verify certificates in online mode?

rajanavikas 28th Oct, 2020

Hello pranay,

  • First you need to complete pay processing fee in https://apeamcet.nic.in/
  • After completion of paying fee you have to check your verification status.
  • The candidate details will be displayed and at the bottom of the screen the candidates whose certificates got verified online will get display message “ Candidate is eligible for exercising options“ all such candidates need not go to Help line centers for certificate verification and they have to proceed to option entry as per the schedule given in the notification.
  • The candidates whose certificates are not verified online will get display “candidate is not eligible” then such candidates have to go to Help line centers and get their certificates verified and they have to proceed to option entry as per the schedule given in the notification.

I hope it helps you.

If you still have issues regarding this you can comment in below.

70 Views

if certificates are verified by online mode.if we are eligible for fee reembersement, then we get the fee reembersement or not.

Shubham Dhane 23rd Oct, 2020

Hello,

If you are eligible to get fee reimbursement then you will get fee reimbursement. It does not effect your fee reimbursement whether or not the documents are verified online or offline. The online verification of documents are done for safety of the students form this COVID-19 or corona virus pandemic. So it does not effect your fee reimbursement.

47 Views

what is the priority order of iiits under ppp mode

Uttara 11th Nov, 2020

Hello,

The Parliament passed the Indian Institutes of Information Technology Laws (Amendment) Bill 2020.The IIIT Laws declares five IIITs in Public Private Partnership (PPP) mode - IIIT Bhopal, IIIT Agartala, IIIT Surat, IIIT Bhagalpur and IIIT Raichur as Institutions of National importance. along with existing 15 Indian Institutes of Information Technology under the IIIT PPP Act, 2017.

The priority should always be based on the year of establishments of these iiits according to me as that is beneficial, secondly priority shoul be given to those iiits thare running in and are being mentored by Centralised Colleges as new colleges may lack modern facilities.

All the best!

547 Views

can anyone clear the difference between B.ED in private mode and B.ED in distance mode

Shreya shrestha 1st Oct, 2020

Hello ,

There are many institute which offers the B.Ed degree programme in distance mode which is gaining more popularity among the graduates.

Regular B.Ed programme

  • duration of programme is 2 years
  • Applicants should be a graduate or postgraduate in either engineering/science/Commerce/arts stream form a recognised board.
  • Graduate students should have minimum aggregate of 50% and postgraduate should have minimum 55% in their qualifying exam.
  • Students have to visit their respective University / institute on regular basis.
  • You have to study as per the schedule provided by the University
  • Campus placement opportunities are available to the students.

Distance B.Ed programme

  • duration 02-05 years
  • Qualifications same as above
  • You don't have to go to college regularly to pursue the intended programme.
  • Study schedule is flexible
  • Students have to find job opportunities on their own and no help is provided by the college or Institute in this matter .

Hope I cleared your doubt . Good Luck!!

126 Views

by which mode we will get secret key of 2020

Rama Devi 22nd Sep, 2020

Hope you are asking the secret key regarding KCET. After the verification of documents, you'll be eligible to receive a secret security key. You can use this key to login at online option entry portal by creating an account there. And remember one thing, For the user  login, options entry, changing of options, save and delete options, and for printing allocation information, your secret key as well as your password is important.

66 Views

i dont know why but Im not abke to turn into study mode?

Neha Bhadauria 19th Aug, 2020

Hii!

I can understand but I think this is not good going for your career atleast.

You should re-think things to know better which things are disturbing you..?

You have to sit and study for your sake and that for your parents too.

This lockdown period is blessings for every student who wants to do something in the future because now we have sufficient time to follow.

Get back soon!

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