NCERT Solutions Class 7 Social Science Our Environment Chapter 5

NCERT Solutions for Class 7 Social Science (Geography) - Our Environment Chapter 5

Geography-  Chapter 5 - Water, is one of the most significant chapters and gives a brief idea about our surroundings and constituents. With the help of the NCERT class 7 Geography chapter 5 solutions, you can easily understand and learn the NCERT textbook questions of the chapter. The solutions are not only authentic and to the point but also follow the latest CBSE guidelines. 

NCERT Solutions for Class 7 Social Science (Geography) Chapter 5 - Water

This chapter is based on an important topic: ‘water’ without which living organisms cannot thrive on this planet. The domain of water is the hydrosphere, which exists in different water bodies like lakes, oceans, rivers, ponds, etc. To understand this more precision and clarity, you can take help from the Class 7 Geography chapter 5 NCERT solutions.

At the official site of Extramarks, you will get all the NCERT solutions and other related study materials, which can be  accessed anytime as per your convenience.

NCERT Solutions for Class 7 Social Science (Geography) Chapter 5

Water which is a basic necessity of life can be complex and straightforward, depending on your understanding level. In middle school, it is necessary and should be well-read by the students of Class 7 as everything learned at this stage plays a significant role in higher classes. With the help of the NCERT solutions of Class 7 Geography chapter 5, you can get in-depth knowledge about the chapter. The solutions are essential for the examinations and assist you in achieving your goals. 

NCERT Solutions for Class 7 Social Science (Geography) Chapter 5

Geography is the branch of social science that deals with people, places, the environment, the relationship between humans and their surroundings, and many more. Extramarks, one of the best reliable e-learning platforms, provides the NCERT Solutions for Class 7 Geography Chapter 5 that have accurate and comprehensive answers to all the questions given at the end of the chapter in NCERT textbook. 

NCERT Solutions for Class 7 Social Science Chapter 5 – Our Environment - Water

71 percent of the surface of the Earth is covered with water. The water continuously changes forms and circulates between rivers, atmosphere, oceans, and land through the process of the water cycle. The NCERT Solutions for Class 7 Geography Chapter 5 has step-by-step descriptions of all the exercises given in the NCERT textbook of Geography.  All the answers are concise and give a quick insight into the whole chapter. They are written in simple language that allows the students to understand them without any difficulties. 

Chapter 5 comprises of the following topics:

  • Water cycle
  • Distribution of water bodies
  • Ocean circulation
  • Ocean currents

5.1 Environment

Our environment is composed of all living species, such as nature, place, people, things, etc. It has two classifications, environment and human environment. The environment is a mixture of both natural as well as man-made phenomena. The environment provides us with all the resources for production with the help of which life sustains on earth. Anything affecting the environment has a direct effect, especially on the living organisms constituting it.

The natural environment has biotic (living), and abiotic (non-living) conditions and the man-made environment includes the activities of human beings and things made by them. 

Natural Environment

  • Land, water, air, plants, and animals are what the natural environment is made up of
  • Lithosphere, atmosphere, hydrosphere, and biosphere are the four realms of the natural environment. 
  • The lithosphere is the outermost solid crust or layer of the earth where we thrive, including mountains, plateaus, plains, valleys, etc.
  • The sphere of water is the hydrosphere, and it includes water bodies such as lakes, rivers, seas, oceans, etc.
  • The atmosphere is the thin layer that protects us from harmful ultraviolet rays.
  • The biosphere is the zone that supports life where land, water, and air interact.

Ecosystem

The interactions among living organisms and the interactions between the organisms and their surroundings form an ecosystem. For example, an ecosystem exists of a large rainforest, grassland, desert, mountains, lake, river, ocean, and even a pond.

Human Environment

  • There is a continuous ongoing interaction of human beings with the environment, altering it according to their needs.
  • The early humans used to worship nature and adapt themselves to it.
  • Humans eventually learned to grow new things with time.
  • They started with hunting animals and then domesticating them to have a settled life.
  • The industrial revolution, the information revolution, and the improvement of transportation and communication made life easier for humans.
  • Alternatively, men started to overpower the environment through deforestation and industrialization to satisfy their needs.
  • The environment is an essential aspect of our lives. It is our all-around provider. It gives us the air to breathe, water to drink, food to eat, and a place to live.
  • The natural environment is made up of land, water, plants, air, and animals, and it has both the biotic and abiotic constituents of the earth.
  • The world of living organisms like animals, plants, etc., are the biotic components, and the abiotic components include land, water, etc.
  • The human environment comprises humans, their needs, their various activities, and their interaction with other organisms.
  • There are four domains of the environment, lithosphere, hydrosphere, atmosphere, and biosphere.

5.2 Human Environment

The interaction between human beings and the environment is termed as human environment. It involves the relationship of human beings with each other and with the environment. A few examples of the human environment include buildings, roads, cities, and other creations of humans. With the help of the environment, it thrives. To know more about the human environment, you can refer to the Class 7 Geography Chapter 5 question answer. All the answers are ncert supported and have been curated by expert teachers. All the textbook exercises for this chapter are also solved in the NCERT solutions. You can get easy access to it at the Extramarks website or app

Key Features of NCERT Solutions for Class 7 Social Science Chapter 5

The NCERT Class 7 Geography chapter 5 solutions are designed by expert teachers with ample experience that will assist the students in preparing effectively for their Geography examinations. The key features of these solutions have been mentioned below:

  • The solutions are authentic and follow the latest CBSE guidelines.
  • The solutions are well written and include to-the-point answers.
  • All the topics contained have been explained in a detailed manner with authentic solutions. 
  • The solutions are written in plain and easy-to-understand language.

You can find the solutions on the official site of Extramarks and access them at your convenience. You can also use them offline.

NCERT Class 7 Social Science Our Environment Chapter-wise Solutions

All the schools following the CBSE curriculum suggest and teach the NCERT books to the students. The Class 7 Geography chapter 5 solutions are an excellent guide in comprehending each topic given in the chapter. The answers have been written after detailed research by experienced faculty that will assist the students in preparing for their tests and also boost their confidence level. The chapter-wise solutions for each chapter of every subject can be easily accessed from the official website of Extramarks.

NCERT Solutions for Class 7 Social Science

Social science is a vital category of literary disciplines that deals with the study of humans, their surroundings, different societies, and many more. It has three main branches: History, Geography, and Civics or Political Science. Aspirants who excel in these branches of Social Science reach an epic point of understanding. Class 7 Social Science under the CBSE curriculum is well defined. To outshine all Social Science subjects, NCERT solutions class 7 has been formulated to help guide the students. All the solutions are straightforward and will help students score well in their examinations.

Q.1 (a) What is precipitation?

(b) What is water cycle?

(c) What are the factors affecting the height of the waves?

(d) Which factors affect the movement of ocean water?

(e) What are tides and how are they caused?

(f) What are ocean currents?

Ans-

(a) The process of water falling back to the surface of the earth from the atmosphere in any form is known as precipitation.

(b) The process by which water continually changes its form and circulates between oceans, atmosphere, and land is known as water cycle.

(c) The factors affecting the height of the waves are:

  1. Speed of wind
  2. Gravitational pull of the moon
  3. Underwater volcanic eruption, etc.

(d) The factors affecting the movement of ocean water are:

  1. Temperature, and
  2. Rotation of the earth

(e) The rhythmic rise and fall of ocean water twice in a day are known as tides. They are caused by the strong gravitational pull of the sun and the moon.

(f) The streams of water flowing constantly on the surface of the ocean in definite directions are known as ocean currents.

Q.2 Give Reason

(a) Ocean water is salty.

(b) The quality of water is deteriorating.

Ans-

(a) The rivers flowing into the oceans carry many dissolved minerals and salts along with it. When water evaporates, all the dissolved minerals and salt are left behind in the water making it salty. The salt present in ocean water is mainly sodium chloride.

(b) Almost three-fourth of our earth is covered with water, yet only 3% of this is fresh water, which can be used by us. The amount of fresh water remains constant but the population is rapidly increasing. To meet the requirements of this increasing population, we are overusing and polluting the existing sources of water. Factors like deforestation, industrial and agricultural pollution of rivers and lakes, wastage of water, pollution of ground water, etc., are responsible for the deteriorating quality of water today.

Q.3 Tick the correct answer.

(i) The process by which water continually changes its form and circulates between oceans, atmosphere, and land is called:

(a) Water cycle (b) Tides (c) Ocean currents

(ii) Generally the warm ocean currents originate near:

(a) Poles (b) Equator (c) None of these

(iii) The rhythmic rise and fall of ocean water twice in a day is called:

(a) Tide (b) Ocean current (c) Wave

Ans-

(i) (a) Water cycle ✓

(ii) (b) Equator ✓

(iii) (a) Tide ✓

Q.4 Match the following:

(i) Caspian Sea (a) Largest lake

(ii) Tide (b) Periodic rise and fall of
water

(iii) Tsunami (c) Strong seismic waves

(iv) Ocean currents (d) Streams of water moving
along definite paths

(e) Water cycle

Ans-

(i) Caspian Sea (a) Largest lake

(ii) Tide (b) Periodic rise and fall of water

(iii) Tsunami (c) Strong seismic waves

(iv) Ocean currents (d) Streams of water moving along
definite paths

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FAQs (Frequently Asked Questions)
1. What is precipitation?

The heat of the sun converts the water into vapour. When the vapour cools down, it condenses and becomes cloud. These clouds might fall on the surface of the earth in the form of sleet, snow or rain. The process of water falling back on the surface of the earth is called precipitation.

2. What is the water cycle?

The process of water continuously changing its form and circulating between atmosphere, oceans and land is called the water cycle.

3. What are the factors that affect the height of the waves?

Following factors can affect the height of the waves:

  • Speed of the wind
  • Volcanic eruptions, earthquake, or underwater landslides

 

4. List the factors that affect the movement of ocean water.

Here are the factors that affect the movement of ocean water:

  • Wind
  • Temperature
  • Warm and cold currents
  • Gravitational pull of moon and sun