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

8th Class Science Sample Paper Science Sample Paper-5

  • question_answer
                                                                                        (vi) Astronauts in outer space have to use radios to communicate with one another. Why?     

    Answer:

           (vi) In outer space, there are no gases to help transmit sound. To communicate with one another astronauts make use of electromagnetic waves such as radio waves, which can travel through vacuum.          


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