| A | B |
|---|
| What is a magnet? | any material which attracts other materials through invisible forcefields caused by the motion of unpaired electrons |
| What is attraction? | To draw objects to one another such as unlike poles |
| What is repulsion? | push objects away from one another such as like poles |
| What is the charge of an electron? | Negative |
| How do you change the polarit of a magnetic force field? | Changing the direction ofthe electric current |
| What three things did Hans Oersted use to prove that there is a magnetic field around an electromagnet? | magnet, wire and iron filings |
| State a rule that describes which objects are attracted to the magnet. | Materials containing no metal will not attract to magnets. Others, with metal, such as steel and iron attract magnets |
| The force that surronds the electrical circuit which called the reactions that you observed is called an: | electromagnetic force field |
| Magnetic fields are created by the movement of: | electrons |
| Electrons are small particles that circle the _______ of atoms | nucleus |
| What kind of electrons do magnetic materials have. | unpaired |
| What magnet has the strongest magnetic force? | u-shaped |
| What is electromagnetism? | when electricity passes through a wire, a magnetic field is created |
