Answer (Detailed Solution Below)

Option 4 : The US
Free
RRB NTPC CBT-I Official Paper (Held On: 4 Jan 2021 Shift 1)
5.4 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

The correct answer is The US.

  • The Grand Canyon is an example of a valley that is an erosional landform.
    • Erosion - It is the geological process in which earthen materials such as soil or rock are removed and transported by natural forces such as wind or water.
      • Valleys start as small and narrow rills.
      • The rills will gradually develop into long and wide Gullies.
        • A rill means a small stream.

Rill network from Tyrone, Ireland

  • The gullies will further deepen, widen, and lengthen to give rise to valleys.
    • Gully - A small passage formed due to stream.

Gully-erosion-USDA-Natural-Resource-Conservation

  • Depending upon dimensions and shape, many types of valleys like V-shaped valleys, gorge, canyon, etc. can be recognised.
    • V-shaped valley 

v-shaped-valley

  • A canyon is characterised by steep steplike side slopes.
  • A canyon is wider at its top than at its bottom. In fact, a canyon is a variant of a gorge.
  • Valley types depend upon the type and structure of rocks in which they form.
    • Example canyons commonly form in horizontal bedded sedimentary rocks and gorges form in hard rocks.
  • The Grand Canyon :

GettyImages-1285406132-9887ca894fc448d6ac8defff5bac2478

  • Gorge - A narrow valley with steep sides and a river running through it.

Kawarau river

Latest RRB NTPC Updates

Last updated on Jun 11, 2025

-> RRB NTPC 2025 Exam Postponed. Railway Recruitment Board has rescheduled the RRB NTPC Exam for June 5, 2025 (Shift 3). 

-> RRB NTPC Exam Analysis 2025 is LIVE now. All the candidates appearing for the RRB NTPC Exam 2025 can check the complete exam analysis to strategize their preparation accordingly. 

-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in

-> The RRB NTPC Admit Card 2025 has been released on its official website.

-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.

-> The RRB NTPC CBT 1 Exam is scheduled from 5th June to 24th June 2025 as per the revised tentative exam schedule. 

-> The RRB NTPC 2025 Notification has been released for a total of 11558 vacancies.

-> A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.

-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.

-> Prepare for the exam using RRB NTPC Previous Year Papers.

-> Check out the Rajasthan PTET Admit Card 2025 and UPSC Prelims Result Date 2025 here.

More Oceanography Questions

More Geography (World Geography) Questions

Get Free Access Now
Hot Links: teen patti jodi teen patti earning app teen patti stars teen patti gold apk teen patti - 3patti cards game