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NCERT Solutions for Class 11 Geography Chapter 13 Water(Oceans)

by aglasem
May 5, 2020
in Extras
Reading Time: 1 min read
0

NCERT Solutions Class 11 Geography Chapter 13 Water(Oceans)– Here are all the NCERT solutions for Class 11 Geography Chapter 13. This solution contains questions, answers, images, explanations of the complete chapter 1 titled  Of Water(Oceans) taught in Class 11. If you are a student of Class 11 who is using NCERT Textbook to study Geography, then you must come across chapter 13 Water(Oceans) After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 11 Geography Chapter 13 Water(Oceans) in one place.

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NCERT Solutions Class 11 Geography Chapter 13 Water(Oceans)

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Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Geography for Class 11 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.

For a better understanding of this chapter, you should also see summary of Chapter 13 Water(Oceans) , Geography, Class 11.

Class 11
Subject Geography
Book Fundamentals Of Physical Geography
Chapter Number 13
Chapter Name

Water(Oceans)

NCERT Solutions Class 11 Geography chapter 13 Water(Oceans)

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Class 11, Geography chapter 13, Water(Oceans) solutions are given below in PDF format. You can view them online or download PDF file for future use.

Water(Oceans) Download

NCERT Solutions for Class 11 Geography (Fundamental of physical geography) Chapter 13 Water _Oceans_ Download

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Question & Answer

Q.1: Multiple  choice  questions.
(i) Identify the element which is not a part of the hydrological cycle
(a)  Evaporation
(b)  Hydration
(c)  Precipitation
(d)  Condensation
 
(ii) The  average  depth  of  continental  slope  varies  between
(a) 2-20m
(b) 200-2,000m
(c) 20-200m
(d) 2,000-20,000


(iii) Which one of the following is not a minor relief feature in the oceans:
(a)  Seamount
(b) Atoll
(c)  Oceanic  Deep
(d) Guyot


(iv) Salinity  is  expressed  as  the  amount  of  salt  in  grams  dissolved  in  seawater  per
(a) 10 gm
(b) 1,000 gm
(c) 100 gm
(d) 10,000 gm


(v) Which one of the following is the smallest ocean:
(a)  Indian  Ocean
(b)  Arctic  Ocean
(c)  Atlantic  Ocean
(d)  Pacific  Ocean

Ans : (i) (b) Hydration (ii) (b) 200-2,000m (iii) (b) Atoll (iv) (b) 1,000 gm (v) (b) Arctic Ocean

Q.2: Answer the following questions in about 30 words.
(i) Why do we call the earth a Blue Planet?
(ii) What  is  a  continental  margin?
(iii) List  out  the  deepest  trenches  of  various  oceans.
(iv) What  is  a  thermocline?
(v) When you move into the ocean what thermal layers would you encounter?  Why  the  temperature  varies  with  depth?
(vi) What is salinity of seawater?

Ans : (i) The earth is called as a Blue Planet because of abundant supply of water on its surface. Water is a rare commodity in our solar system. There is no water on the sun or anywhere else in the solar system. (ii) The continental slope together with the continental shelf is called the continental margin. (iii) There are 57 trenches have been explored so far; of which 32 are in the Pacific Ocean; 19 in the Atlantic Ocean and 6 in the Indian Ocean. (iv) The boundary region, from where there is a rapid decrease of temperature, is called the thermocline. This layer lies below the first layer and is characterised by rapid decrease in temperature with increasing depth. (v) When we move into the ocean we will encounter three thermal layers. The temperature varies with the depth because the temperature structure of oceans over middle and low latitudes can be described as a three layer system. The first layer is about 500 m thick with temperatures ranging beüeen 200 and 250 C. The second layer is 500-1,000 m thick. The third layer is very cold and extends upto the deep ocean floor (vi) Salinity is the term used to define the total content of dissolved salts in seawater . It is calculated as the amount of salt (in gm) dissolved in 1,000 gm (1 kg) of seawater. It depend mainly on evaporation and precipitation.

Q.3: Answer the following questions in about 150 words.
(i) How  are  various  elements  of  the  hydrological  cycle  interrelated?
(ii) Examine  the  factors  that  influence  the  temperature  distribution  of  the oceans.

Ans : Water is a cyclic resource. It can be used and reused. The hydrological cycle, is the circulation of water within the earth's hydrosphere in different forms i.e. the liquid, solid and the gaseous phases. It also refers to the continuous exchange of water beüeen the oceans, atmosphere, land surface and subsurface and the organisms. The distribution of water on earth is quite uneven. Many locations have plenty of water while others have very limited quantity. About 71 percent of the planetary water is found in the oceans. The remaining is held as freshwater in glaciers and icecaps, ground.Water sources, lakes, soil moisture, atmosphere, streams and within life. Nearly 59 per cent of the water that falls on land returns to the atmosphere through evaporation from over the oceans as well as from other places. The remainder runs-off on the surface, infiltrates into the ground or a part of it becomes glacier (ii) The factors which affect the distribution of temperature of ocean water are : (l) Latitude: The temperature of surface water decreases from the equator towards the poles because the amount of insolation decreases poleward. (ii) Unequal distribution of land and water: The oceans in the northern hemisphere receive more heat due to their contact with larger extent of land than the oceans in the southern hemisphere. (iii) Prevailing wind: The winds blowing from the land towards the oceans drive warm surface water away from the coast resulting in the upwelling of cold water from below. It results into the longitudinal variation in the temperature. Contrary to this, the onshore winds pile up warm water near the coast and this raises the temperature. (iv) Ocean currents: Warm ocean currents raise the temperature in cold areas while the cold currents decrease the temperature in warm ocean areas. Gulf stream (warm current) raises the temperature near the eastern coast of North America and the West Coast of Europe while the Labrador current (cold current) lowers the temperature near the north-east coast of North America.

NCERT / CBSE Book for Class 11 Geography

You can download the NCERT Book for Class 11 Geography in PDF format for free. Otherwise you can also buy it easily online.

  • Click here for NCERT Book for Class 11 Geography
  • Click here to buy NCERT Book for Class 11 Geography

All NCERT Solutions Class 11

  • NCERT Solutions for Class 11 Accountancy
  • NCERT Solutions for Class 11 Biology
  • NCERT Solutions for Class 11 Chemistry
  • NCERT Solutions for Class 11 Maths
  • NCERT Solutions for Class 11 Economics
  • NCERT Solutions for Class 11 History
  • NCERT Solutions for Class 11 Geography
  • NCERT Solutions for Class 11 Political Science
  • NCERT Solutions for Class 11 Sociology
  • NCERT Solutions for Class 11 Psychology
  • NCERT Solutions for Class 11 English
  • NCERT Solutions for Class 11 Hindi
  • NCERT Solutions for Class 11 Physics
  • NCERT Solutions for Class 11 Business Studies
  • NCERT Solutions for Class 11 Statistics

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You can also check out NCERT Solutions of other classes here. Click on the class number below to go to relevant NCERT Solutions of Class 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.

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