(xx) Which river flowing through the Nalgonda district suffers from water scarcity?    (xxi) Name the calamity that strikes when there is severe water scarcity.    (xxii) How much amount of land is present on the earth’s surface?    Short Answer Type Questions    5. Answer the following questions in 3-4 sentences.  (i) [(Session 11.1)] How is water measured?    CHAPTER 11. WATER IN OUR LIFE                                                       249
Long Answer Type Questions    6. Answer the following questions in 6-8 sentences.    (i) [(Session 11.1)] Where do we get water from? When there is too little rainfall, how          does it affect the lives of people?    AS2-Asking questions and making hypothesis  Long Answer Type Questions    7. Answer the following questions in 6-8 sentences.  (i) [(Session 11.2)] Sita and Gita went to an excursion. After coming from excursion,             Sita was suffering from cold and cough; and Gita was suffering from diarrhoea. What           questions would their mother have asked to clarify her doubts?    CHAPTER 11. WATER IN OUR LIFE  250
AS3-Experimentation and field investigation  Short Answer Type Questions    8. Answer the following questions in 3-4 sentences.  (i) [(Session 11.1)] We use water in our day–to–day lives for drinking, washing, bathing             and cooking. Estimate the amount of water you use for each of those activities and           tabulate it. How did you arrive at that estimation?    Long Answer Type Questions    9. Answer the following questions in 6-8 sentences.  (i) [(Session 11.1)] Estimate how much water we waste every day during washing, drink-            ing, bathing etc. Make a table of your estimates.    CHAPTER 11. WATER IN OUR LIFE  251
AS4-Information skills and projects  Long Answer Type Questions    10. Answer the following questions in 6-8 sentences.  (i) [(Session 11.2)] Collect information about diseases spread through water and their             prevention.    CHAPTER 11. WATER IN OUR LIFE  252
AS5-Communication through drawing and model making  Long Answer Type Questions    11. Answer the following questions in 6-8 sentences.  (i) [(Session 11.2)] Observe the two images shown below. Write what each picture is             showing. What can we learn from this?    CHAPTER 11. WATER IN OUR LIFE  253
AS7-Application to daily life, concern to bio diversity  Short Answer Type Questions    12. Answer the following questions in 3-4 sentences.  (i) [(Session 11.2)] What problems were faced by Ramanna?    Objective Questions  AS1-Conceptual Understanding    13. Choose the correct answer.         .  (i) We measure the volume of water in    (A) Kilometres                         (B) Grams  (C) Litres                             (D) Micrometres    (ii) Which festival is described in the starting of the lesson?    (A) Diwali                             (B) Holi  (C) Christmas                          (D) Sankranti    CHAPTER 11. WATER IN OUR LIFE                                    254
(iii) Gallon is used to measure      of liquids.    (A) Pressure                              (B) Volume  (C) Area                                  (D) Weight    (iv) is available freely in nature.    (A) Water                                 (B) Food  (C) Clothes                               (D) Shelter    (v) Diarrhoea is caused due to       .    (A) Air pollution                         (B) Sound pollution  (C)Water pollution                        (D)Soil pollution    (vi) contains more water.    (A) Spinach                               (B) Mango  (C) Carrot                                (D) Watermelon    (vii) Long periods of less rainfall usually causes        .    (A) floods                                (B) drought    (C) earthquake                            (D) volcano    (viii) Long periods of excessive rainfall usually causes    (A) earthquake                            (B) drought  (C) floods                                 (D) volcano    (ix) Which of these consumes most water?    (A) Agriculture                           (B) Industries    (C) Hotels                                (D) Schools    CHAPTER 11. WATER IN OUR LIFE                                  255
(x) Which river flows through Nalgonda district?    (A) Godavari                                       (B) Krishna  (C) Yamuna                                         (D) Satluj  (xi) Our body contains     of water by weight.    (A) 20%                        (B) 40%  (C) 60%                        (D) 70%  (xii) Sea water is                          .    (A) salty                      (B) sweet  (C) bitter                     (D) sour    CHAPTER 11. WATER IN OUR LIFE                                   256
PROJECT BASED QUESTIONS       —— Project Based Questions ——    (i) Discuss with your teachers and parents and make a list of different methods used for            separation of components of mixtures. Also give atleast two examples each where            these methods of separation find application in our daily life.    (ii) So far, we have studied that materials can exist in three important states; as solid,            liquid and gases. But recently a new state of matter called PLASMA is discovered            by scientists. Taking help from Science Magazines/Newspapers or Internet make a            project report on the characteristics of Plasma state.    (iii) Spiders are capable of living and surviving anywhere. The spider species is among            the world’s most diversified living creature and is ranked 7. They can survive in the            harshest conditions such as dry climates. Collecting pictures from internet, make a            scrap book on spiders available in different habitats.    (iv) Prepare a food web for a Desert region on poster board or construction paper showing            the connections of at least 12 organisms in that region. You can use pictures, print            outs or drawings to show the connections between the organisms you selected.    (v) What happens when the water cycle doesn’t work for people. Discover how simple            interventions can restore balance in the system and how you can help and make a            project report on it.    (vi) Take a bar magnet and go around your house to see what will stick to it or feel like it            is attracted to it. Keep a list of the items you tried. Check whether the attraction was            strong, weak, or none. Then try to figure out why.    (vii) Formulate inexpensive balanced diet from locally available food material. Collect pic-            tures of the food materials from internet or magazines and make a scrap book.    (viii) Make a list of the different kinds of birds available in your locality and mention the kind            of food eaten by them. Make a scrap book by collecting pictures of those birds from            internet or magazines. Try to mention the scientific names of those birds.    (ix) Using the internet, collect pictures and information on various handloom fabrics and            products. Also, write a note on the importance of handloom industry in the economy of            our country.    Project Based Questions  257
PROJECT BASED QUESTIONS    (X) Collect various parts of atleast five different plants and prepare a herbarium. For each            plant, mention the type of root, shape and margins of leaf, leaf venation, and colour            and position of flower on the stem.    (Xi) Discuss with your friends and parents, and also observe various changes            occurring in your surroundings. Based on your discussion and observations, give            examples offive slow and permanent changes; and five fast and temporary changes            around you.Also give reasons for these changes.    Project Based Questions  258
                                
                                
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