CBSE Class 7 Science Water A Precious Resource Assignment

Read and download the CBSE Class 7 Science Water A Precious Resource Assignment for the 2025-26 academic session. We have provided comprehensive Class 7 Science school assignments that have important solved questions and answers for Chapter 16 Water A Precious Resource. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.

Solved Assignment for Class 7 Science Chapter 16 Water A Precious Resource

Practicing these Class 7 Science problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for Chapter 16 Water A Precious Resource, covering both basic and advanced level questions to help you get more marks in exams.

Chapter 16 Water A Precious Resource Class 7 Solved Questions and Answers

 

Water - A Precious Resource 

ACTIVITY- 16.1 ` 
 
Question 1- Name three activities by which water is being wasted? 
Answer- Cleaning of houses and animals, washing car and opening tap during brushing our teeth. 
 
Question 2- Should we check the wastage of water and why? 
Answer- Yes, because there are very limited sources of fresh water on earth. 
 
Question 1- ________ is the process by which water is converted from its liquid state to a gaseous state. 
Answer- Evaporation.  
 
Question 2- ________ is the process by which water is converted from its gaseous state to a liquid state. 
Answer- Condensation. 
 
ACTIVITY- 16.2 
 
Question 1- Which beaker represents the underground water? 
Answer- Beaker ‘C’. 
 
Question 2- Which beaker represents the surface water? 
Answer- Water remained in beaker ‘A’. 
 
EXERCISE 
 
Question 1- Fill In The Blanks : 
 
(i). The water we drink is in liquid state. 
 
(ii). The process of seeping of water into the soil is called infiltration. 
 
(iii). The upper level of ground water is called water-table. 
 
(iv). Water management means dealing with water in the best possible ways. 
 
(v). A farmer can use water economically in the field, by drip irrigation. 
 
 
Question 2- Write True Or False. 
 
(i). Water cycle helps in maintaining water on the earth. (True) 
 
(ii). About 97% of total water present on the earth is fresh water. (False) 
 
(iii). Repair leaking taps and pipes at the earliest. (True) 
 
(iv). We are quickly moving towards global water crisis. (True)
 
(v). Turn on taps while brushing. (False) 
 
 
Question 3- Match The Column:-
 
 Column I                           Column II
(i) Ice                               (a). Oceans and sea
(ii) Saline water                 (b). Rivers and ponds
(iii) Fresh water                 (c). Gaseous state of water
(iv) Water vapour              (d). Purest form of water
(v) Rain water                   (e). Solid state of water
 
 
Question 4. Choose One Option For The Follwing.
 
(i). Which of the following is responsible for depletion of ground water?
 
a) Increasing population
b) Increasing industries
c) Deforestation
d) All of these (✓)
 
(ii). The Punjab preservation of subsoil water act was passed in the year:
 
a) 2009 (✓)
b) 2010
c) 200l
d) 2015
 
(iii). The world water day is celebrated every year on:
 
a) 22 April
b) 24 March
c) 22 March (✓)
d) 22 May
 
(iv). Oceans and sea cover about ………. of the earth surface.
 
a) 75%
b) 71%
c) 97% (✓)
d) 29%
 
(v). We should not keep taps running while:
 
a) Brushing
b) Shaving
c) Bathing
d) All of these (✓)
 
 
Question 5- Very Short Answer Type Questions.
 
(i) What do you mean by ground water?
Answer- Groundwater is the water present below the earth’s surface in the cracks and spaces in soil, sand and rocks.
 
(ii) Why is sea and ocean water not fit for drinking?
Answer- Because sea and ocean water have large amounts of dissolved salts.
 
(iii) Define aquifers.
Answer- Groundwater present between the layers of hard rocks below the water table is known as aquifer.
 
(iv) Name the three states of water.
Answer- Solid, liquid and gas.
 
(v) How is groundwater recharged?
Answer- Rainwater and water from other sources such as rivers and ponds seeps into the soil due to gravity until the empty spaces and cracks deep below the ground are filled with water. This process is known as infiltration. Hence groundwater gets recharged.
 
 
Question 6- Short Answer Type Questions.
 
(i) Enlist some activities by which water is being wasted by people.
Answer- Water is being wasted by people in cleaning of houses and animals, washing car and opening taps during brushing teeth.
 
(ii) How will you minimize the use of water to maintain a garden?
Answer- We should water the garden early in the morning and late afternoon taking shorter showers. We should reuse the waste water of cleaning purposes in watering the plants.
 
(iii) How is water important to us?
Answer-
(1). About 70% of human body consists of water.
(2). Water helps to control our body temperature.
(3). Water helps to excrete waste products from our body.
(4). Water is important for growth of plants.
(5). Water maintains the temperature of earth.
(6). Water is essential for our many daily life activities.
 
(iv) How increase in human population is leading to depletion of water table?
Answer- As the human population increase, consumption of water by them increases for their daily activities.Often groundwater is used for construction of houses, shops and roads etc. Hence groundwater is used at high rate, but the area for seepage of water decreases. So water table is depleted by growth in human population.
 
(v) Why do plants wilt and finally dry up if they do not get water for some days?
Answer- Plants use water in photosynthesis. Also plants lose some water by transpiration. So if plants do not get water for some days, they wilt and finally dry up.
 
 
Question 7- Long Answer Type Questions.
 
(i) What steps will you take to save water?
Answer-
(1) Make efforts to stop the leakage of water from taps and water pipes.
(2) Turn off taps while brushing or shaving.
(3) Mop the floor instead of washing, reuse the waste water to water the plants.
(4) Water the garden early in the morning and late afternoon taking shorter showers.
(5) Wash vegetables and fruits in big containers and use this water for cleaning or watering the plants.

 

More Question

Q.1 Fill in the blanks

1. 22 March is celebrated as the ‘World ____________ day’.

2. _____% of the Earth’s surface is covered with Water.

3. _____________ was the traditional way of collecting water.

4. Water exists in three forms : (i)_________________, (ii) _____________ and (iii) ___________.

5. Water management is a practice to minimize ____________ of water.

Q.2 State whether True of False :

1. Infiltration is the process of seeping of water into the empty spaces of ground.

Ans. ______________

2. Collection and conservation of rainwater from the rooftop of buildings and industries is known as rainwater harvesting.

Ans. ______________

3. 30 March is celebrated as the World Water Day.

Ans. ______________

4. We can drink sea water because of its salt content.

Ans. ______________

5. The process of infiltration recharges the groundwater.

Ans. ______________

Q.3. Write some methods to conserve water at home :

Answer :

1. Moping floor instead of washing.

2. Washing vehicles using bucket.

3. ______________________________________________________________

4. ______________________________________________________________

5. ______________________________________________________________

6. ______________________________________________________________

7. ______________________________________________________________

 

Please refer to attached file for Water - A Precious Resource

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Important Practice Resources for Class 7 Science

CBSE Class 7 Science Chapter 16 Water A Precious Resource Assignment

Access the latest Chapter 16 Water A Precious Resource assignments designed as per the current CBSE syllabus for Class 7. We have included all question types, including MCQs, short answer questions, and long-form problems relating to Chapter 16 Water A Precious Resource. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.

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  1. Read the Chapter First: Start with the NCERT book for Class 7 Science before attempting the assignment.
  2. Self-Assessment: Try solving the Chapter 16 Water A Precious Resource questions by yourself and then check the solutions provided by us.
  3. Use Supporting Material: Refer to our Revision Notes and Class 7 worksheets if you get stuck on any topic.
  4. Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.

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For the best results, solve one assignment for Chapter 16 Water A Precious Resource on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.

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