CBSE Class 7 Science Water A Precious Resource Assignment

Read and download free pdf of CBSE Class 7 Science Water A Precious Resource Assignment. Get printable school Assignments for Class 7 Science. Class 7 students should practise questions and answers given here for Chapter 16 Water A Precious Resource Science in Class 7 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 7 Science prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

Assignment for Class 7 Science Chapter 16 Water A Precious Resource

Class 7 Science students should refer to the following printable assignment in Pdf for Chapter 16 Water A Precious Resource in Class 7. This test paper with questions and answers for Class 7 Science will be very useful for exams and help you to score good marks

Chapter 16 Water A Precious Resource Class 7 Science Assignment

 

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

Chapter 01 Nutrition in Plants
CBSE Class 7 Science Nutrition in Plants Assignment
Chapter 02 Nutrition in Animals
CBSE Class 7 Science Nutrition in Animals Assignment
CBSE Class 7 Science Nutrition in Plants and Animals Assignment
Chapter 03 Fibre to Fabric
CBSE Class 7 Science Fiber to Fabric Assignment
Chapter 04 Heat
CBSE Class 7 Science Heat Assignment
Chapter 05 Acids, Bases and Salts
CBSE Class 7 Science Acids Bases and Salts Assignment
Chapter 06 Physical and Chemical Changes
CBSE Class 7 Science Changes and Reactions Assignment
CBSE Class 7 Science Physical And Chemical Changes Assignment
Chapter 07 Weather, Climate and Adaptations of Animals to Climate
CBSE Class 7 Science Weather climate and Adaptation of animals to climate Assignment
CBSE Class 7 Science Weather Climate and Adaptations Assignment
Chapter 09 Soil
CBSE Class 7 Science Soil Assignment Set A
CBSE Class 7 Science Soil Assignment Set B
Chapter 10 Respiration in Organisms
CBSE Class 7 Science Respiration in Organisms Assignment
Chapter 11 Transportation in Animals and Plants
CBSE Class 7 Science Transport of Substances Assignment
CBSE Class 7 Science Transportation in Animals and Plants Assignment
Chapter 12 Reproduction in Plants
CBSE Class 7 Science Reproduction in Plants Assignment
CBSE Class 7 Science Reproduction in Plants Assignment Set B
Chapter 13 Motion and Time
CBSE Class 7 Science Time Motion and Speed Assignment
Chapter 14 Electric Current and its Effects
CBSE Class 7 Science Electric Current and its effects Assignment
Chapter 15 Light
CBSE Class 7 Science Light Assignment
Chapter 16 Water: A Precious Resource
CBSE Class 7 Science Water A Precious Resource Assignment
Chapter 17 Forests: Our Lifeline
CBSE Class 7 Science Forests Our Lifeline Assignment
Chapter 18 Wastewater Story
CBSE Class 7 Science Waste Water Story Assignment
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CBSE Class 7 Science Collection of Assignments Set A
CBSE Class 7 Science Collection of Assignments Set B
CBSE Class 7 Science Collection of Assignments Set C
CBSE Class 7 Science Collection of Assignments Set D
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CBSE Class 7 Science Electricity Assignment
CBSE Class 7 Science Fibers from Animals Assignment
CBSE Class 7 Science Forest Assignment
CBSE Class 7 Science Light And Water Assignment
CBSE Class 7 Science Obtaining and Utilizing Food Assignment
CBSE Class 7 Science Respiration in plants and animals Assignment
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CBSE Class 7 Science Chapter 16 Water A Precious Resource Assignment

We hope you liked the above assignment for Chapter 16 Water A Precious Resource which has been designed as per the latest syllabus for Class 7 Science released by CBSE. Students of Class 7 should download and practice the above Assignments for Class 7 Science regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 7 Science practice sheet in Pdf. All questions have been designed for Science by looking into the pattern of problems asked in previous year examinations. You can download all Revision notes for Class 7 Science also absolutely free of cost. Lot of MCQ questions for Class 7 Science have also been given in the worksheets and assignments for regular use. All study material for Class 7 Science students have been given on studiestoday. We have also provided lot of Worksheets for Class 7 Science which you can use to further make your self stronger in Science.

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