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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                  Home Assignment
                                                   Subject-Physics
                                                       CH-Sound
                                            Subtopic- Music and Noise






               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.
                   1.    Assertion: music is pleasant to hear                                                  1
                         Reason: they have irregular waveforms
                   2.    Assertion: Noise pollution may lead to health problems                                1
                         Reason: Noise pollution creates hyper tension, anxiety, hearing problems.
               Fill in the blanks
                   3.    Noise has ____________ waveforms.                                                     1
                   4.    Music is ______ to hear.                                                              1
                   5.    Presence of unwanted ___________ in atmosphere creates noise pollution.               1
               True/false
                   6.    Loud Music can sometimes become noise.                                                1
                   7.    It is comfortable to stay near areas with noise pollution.                            1
               Short Answer Questions
                   8.    Write two difference between music and noise                                          2
                   9.    What are harmful effects of noise pollution?                                          2
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