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

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

Welcome to the Chapter 5 - Water, Class 7 Social Science - Our Environment (Geography) NCERT Solutions page. Here, we provide detailed question answers for Chapter 5 - Water. The page is designed to help students gain a thorough understanding of the concepts related to natural resources, their classification, and sustainable development.

Our solutions explain each answer in a simple and comprehensive way, making it easier for students to grasp key topics Water and excel in their exams. By going through these Water question answers, you can strengthen your foundation and improve your performance in Class 7 Social Science - Our Environment (Geography). Whether you’re revising or preparing for tests, this chapter-wise guide will serve as an invaluable resource.

Exercise 1

Q 1:

(i) What is precipitation?
(ii) What is water cycle?
(iii) What are the factors affecting the height of the waves?
(iv) Which factors affect the movement of ocean water?
(v) What are tides and how are they caused?
(vi) What are ocean currents?

(i) Precipitation is defined as the deposition of moisture from the atmosphere onto the earth’s surface. This may be occur in the form of rain, hail, frost fog, sleet or snow etc.

(ii) The process by which water changes continuously change its form and circulates between oceans, atmosphere and land is called as the water cycle.

(iii) Factors affecting the heights of the waves are as follows:
- Speed of wind
- Duration of wind
- Distance the wind blows over water
- Earthquakes
- Volcanic eruption
- Underwater landslides

(iv) Factors affecting the movement of ocean water are as given below:
- Temperature
- Earthquake or volcanic eruption
- Gravitational pulls of the sun and the moon

- Underwater landslides
- Rotation of the earth

(v) The rhythmic rise and fall of ocean water twice a day is known as tide. Tides are caused due to the gravitational pull that is exerted by the sun and the moon on the earth’s surface.

(vi) Ocean currents are defined as streams of water flowing constantly on the oceanic surface in definite directions.

Q 2:

(i) Ocean water is salty.
(ii) The quality of water is deterioting.

(i) Oceanic water is salty because it obtains large amount of dissolved salts. Most of the salt is sodium chloride or contains the common table salt that we eat.

(ii) The quality of water is deteriorating as reasons given below:
- Garbage that we throw in the river.
- Chemicals pollutes water that are released from industries.
- Residues of the harmful insecticides and pest resistant’s flowing in from the fields.
- Unburnt or half burnt corpses of men and animals thrown in water bodies.

Q 3:

(i) The process by which water continually changes its form and circulates between oceans, atmosphere and land
(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 rythmic rise and fall of ocean water twice in a day is called
(a) Tide (b) Ocean current (c) Wave

(i) (a) water cycle
(ii) (b) equator
(iii) (a) tide

Q 4:

(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

(i) Caspian sea (a) Largest lake
(ii) Tide (b) Periodic rise and fall of water

(iii) Tsunami (c) strong seismic water

(iv) Ocean currents (d) Streams of water mov

Q 5:

(i) The name of one river is hidden in each of the sentences below. Spot it. Example:Mandira, Vijayalakshmi and Surinder are my best friends Answer: Ravi
(a) The snake charmer’s bustee, stables where horses are housed, and the piles of wood, all caught fire accidentally. (Hint: Another name for River Brahmputra)

(b) The conference manager put pad, material for reading and a pencil for each participant (Hint: A distributary on the Ganga-Brahmputra delta)

(d) Bhavani germinated the seeds in a pot (Hint: Look for her in West Africa)

(e) “I am a zonal champion now” declared the excited athlete. (Hint: The river that has the biggest basin in the world)

(f) The tiffin box rolled down and all the food fell in dusty potholes. (Hint: Rises in India and journeys through Pakistan)

(g) Malini leaned against the pole when she felt that she was going to faint. (Hint: Her delta in Egypt is famous)

(h) Samantha mesmerised everybody with her magic tricks. (Hint: London is situated on her estuary)

(i) “In this neighbourhood, please don’t yell! Owners of these houses like to have peace”. Warned my father when we moved into our new flat”. (Hint: colour!)

(j) ‘Write the following words, Marc!’ “On”, “go”, “in”........ said the teacher to the little boy in KG Class. (Hint: Rhymes with ‘bongo’) Now make some more on your own and ask your classmates to spot the hidden name. You can do this with any name: that of a lake, mountains, trees, fruits, school items etc.

(i) (a) teesta

(b) padma

(d) niger

(e) amazon

(f) Indus

(g) nile

(h) thames

(i) yeallow

(j) congo

Frequently Asked Questions about Water - Class 7 Social Science - Our Environment (Geography)

- 1. How many questions are covered in Water solutions?
- All questions from Water are covered with detailed step-by-step solutions including exercise questions, additional questions, and examples.
- 2. Are the solutions for Water helpful for exam preparation?
- Yes, the solutions provide comprehensive explanations that help students understand concepts clearly and prepare effectively for both board and competitive exams.
- 3. Can I find solutions to all exercises in Water?
- Yes, we provide solutions to all exercises, examples, and additional questions from Water with detailed explanations.
- 4. How do these solutions help in understanding Water concepts?
- Our solutions break down complex problems into simple steps, provide clear explanations, and include relevant examples to help students grasp the concepts easily.
- 5. Are there any tips for studying Water effectively?
- Yes, practice regularly, understand the concepts before memorizing, solve additional problems, and refer to our step-by-step solutions for better understanding.

Exam Preparation Tips for Water

The Water is an important chapter of 7 Social Science - Our Environment (Geography). This chapter’s important topics like Water are often featured in board exams. Practicing the question answers from this chapter will help you rank high in your board exams.

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