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  3. 8th Class
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  5. Friction

8th Class Science Friction Question Bank Friction Formative Objective Problems

  • question_answer
    Anthony pushes a metal box such that it slides over a surface. After sometime, the bottom of the box gets heated.                                 The bottom of the box gets heated because of the   

    A)  Potential energy of the box                   

    B)  Conversion of mass into energy               

    C)  Absorption of heat from the atmosphere      

    D)  Friction between the box and the surface

    Correct Answer: D

    Solution :

      Friction is a kind of force that always acts against the direction of movement of a body. As a result of the friction between the box and the surface, mechanical energy gets converted into heat energy. This heat energy raises the temperature of the bottom of the box. The correct answer is D.


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