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science
Chapter 18 test
Question | Answer |
---|---|
What is Aurora | An aurora is formed when charged particles from the sun hit oxygen and nitrogen atoms in the air. |
What are the two Auroras? | Northern lights, bad southern lights. |
What does a step down transformer? | A step-down transformer decreases voltage and increases current. |
What is a ferromagnet? | A temporary magnet that becomes a magnet by rubbing a nail on a magnet. |
What is an electromagnet? | the interaction between electricity and magnetism. |
What is a permanent magnet? | Permanent magnets are difficult to magnetize. But they tend to keep their magnetic properties longer than temporary magnets do. |
Where do you find the strongest magnetic effects on a magnet? | On both the poles. |
What is the geographic north pole. | |
What is the geographic south pole. | Where the magnetic force is strongest in the south. |
What is the magnetic north pole of a magnet | Where the magnetic force strongest in the north. |
What is the magnetic south pole of a magnet |