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SAI INTERNATIONAL SCHOOL
                                                        Class-6

                                                Home Assignment
                                                  Subject-Physics
                                      Ch.- Water: The Life-giving Liquid

                             Subtopic- Droughts, Floods and Water Pollution


        INSTRUCTIONS:
        Please solve or paste the worksheet in the Physics Copy.
        For Assertion& Reason question follow the following directions.
               DIRECTION: Each of these questions contains an Assertion followed by Reason. Read them carefully and
               answer the question on the basis of following options. You have to select the one that best describes the two
               statements.
               (a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
               (b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
               (c) If Assertion is correct but Reason is incorrect.
               (d) If Assertion is incorrect but Reason is correct
               (e) If Assertion & Reason both are incorrect.
               Sl.No      QUESTIONS                                                                   MARKS

                          Famine is caused due to .............                                       1
                             a) Droughts
                      1      b) Floods
                             c) Water pollution
                             d) Water cycle
                          Contamination of water bodies with unwanted materials is known              1
                          as...........
                             a) Water pollution
                      2
                             b) Water cycle
                             c) Floods
                             d) Droughts
                          Which of the following is not a waterborne disease?                         1
                             a) Cholera
                      3      b) Typhoid
                             c) Hepatitis
                             d) Malaria
                          Which of following is not a cause of water pollution?                       1


                      4 a) Use of large amounts of Herbicide, pesticides and fertilizers
                          b) Waste and sewage generated by factories
                          c) Littering on the land or on the water
                          d) Percolation of rain water
                          Assertion: In famine, people die of starvation and dehydration.             1
                      5
                          Reason: flood contaminate water bodies with unwanted material.

                      6   What are the causes of water pollution?                                     1

                      7   Define epidemic?                                                            1
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