2. Sample Papers
  3. 8th Class
  4. Science

8th Class Science Sample Paper Science Sample Paper-8

  • question_answer
    List three sources of noise pollution in your locality.                                                                                    

    Answer:

    Following examples show that the friction
    Produces heat:                                                                                                                             
    (i) Warming of our palms when we rub them.
    (ii) Rubbing sticks together to produce fire.
    (iii) Warming of the parts of a machine when it is operated.


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