Unit 1 Part 2 Study Guide

 On magnets, like poles _________________________ (north - north , south-south)

On magnets opposite poles _____________ (north - south).

A magnet is surrounded by an invisible ____________________________________________.

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Spinning coils and magnets form a(n) ______________________________________________.

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What are aligned inside a magnet that give it a north and a south end? ___________________.

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Which of the following metals can be magnetized?

• lead

• iron

• gold

• silver

Why are the magnetic domains of this paperclip lined up?

• Because the paperclip has acquired a static charge.

• Because a paperclip is a type of electromagnet.

• Because paperclips are permanent magnets.

• Because the paperclip has been exposed to a magnetic field

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How can you create a magnetic field?

• A. By stringing many magnets together.

• B. By rubbing a piece of glass against a piece of wool.

• C. By plugging a refrigerator magnet into an electric socket.

• D. By running a current through a wire.

8. Which of the following statements is true?

• A. A compass is affected by the earth’s magnetic field.

• B. An object’s magnetic field gets weaker as your move closer to it.

• C. Once a piece of metal becomes magnetized, it stays magnetized.

• D. The earth’s magnetic north pole is located at the geographical north pole

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9. If you have an electromagnet, how can you make its magnetic field stronger?

• A. Increase the size of the magnetic domains.

• B. Increase the strength of the electrical current.

• C. Increase the length of the wire.

• D. Increase the distance between the north and south poles.

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