6. A boy is playing with a toy sledge. In which surface will it travel fastest? A. the carpet C. the wet floor B. the rough floor D. the polished floor 7. A boy sits on a grassy slope. Which force stops him from sliding down. A. friction C. magnetic force B. gravity D. air resistance 8. In which region of a magnet where the magnetic force acts? A. a compass C. the magnetic field B. the north pole D. the magnetic domain 9. Which of this feels the biggest gravitational pull on earth? A. a 1000-kg. elephant B. a 100-kg mouse C. 100-kg boxer D. a 10-kg bicycle 10. If the moon is closer to Earth, what would happen to the force between them? A. get smaller C. get bigger B. disappear D. stay the same



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