In a bar magnet the magnetic force seems to come from each end. The ends of a bar magnet are called the __________. What one word completes the sentence?

Which of the following will prove that a metal bar is a permanent magnet?*1 pointit attracts another magnetit attracts both ends of a compass needleit conducts electricityit repels another magnet

20When two objects rub together, the force that opposes the motion of the objects is called _______. A. gravity B. magnetism C. electricity D. friction

The force made by a magnet is special because it can make other magnets and some metal objects  _______ without ever touching them. A. explode B. melt C. disappear D. move

In your own words, describe what magnetism is. Try to include the terms force, magnet and non-contact in your definition.

n a bar magnet we say that like poles do what?