Magnet

What is a magnet, and from what word is its name derived?

• A substance that repels all metals, derived from "magnetite."

• A substance that attracts certain metals, derived from "magnesia."

• A substance that attracts all materials, derived from "magnetic."

• A substance that generates electricity, derived from "magnum."

Which of the following is an example of a natural magnet?

• Bar magnet

• Cylinder magnet

• Earth magnet

• Horseshoe magnet

How do similar and dissimilar magnetic poles interact when brought close to each other?

• Similar poles attract, dissimilar poles repel.

• Similar poles repel, dissimilar poles attract.

• Both similar and dissimilar poles attract.

• Both similar and dissimilar poles repel.

Which method of making a magnet results in a temporary magnet whose magnetism disappears when the electric current is cut off?

• Induction

• Rubbing

• Electromagnetism

• Heating