Magnets

What are the two ends of a magnet called?

• Front and back

• Left and right

• North pole and south pole

• Top and bottom

Explain the difference between the north and south poles of a magnet.

• The north pole of a magnet points towards the Earth's geographic North Pole, while the south pole points towards the Earth's geographic South Pole.

• The south pole of a magnet points towards the Earth's geographic North Pole

• The north pole of a magnet points towards the Earth's magnetic South Pole

• The north pole of a magnet points towards the Earth's geographic South Pole

How does a magnetic field form around a magnet?

• Atoms in a material align in the same direction

• The magnet emits a type of energy that forms the field

• The magnet attracts invisible particles that create the field

• The magnet releases a special gas that forms the field

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What is the purpose of a magnetic field?

• To cook food faster

• To repel non-magnetic materials

• To attract or repel other magnets or magnetic materials

• To generate electricity

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Dustin is doing an experiment on magnetism. He observes that a piece of paper is not pulled toward a magnet. He wonders why a magnet is able to stick to paper on a magnetic refrigerator. Which statement best explains why this can happen?

• The magnet repels paper.

• The paper contains nickel, iron, or cobalt.

• The paper has been rubbed many times with a magnet.

• The magnet is attracted to the refrigerator metal through the paper.

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Objects made from metals such as iron, nickel and cobalt are ​ (a)   .

• magnetic

• not magnetic

• gold

• silver

A north pole and a south pole will pull toward each other.

(a)  

• True

• False

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When ​ (a)   poles are placed near one another, they will attract.

• opposite

• same

• north

• south

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Name two common uses of magnets in everyday life.

• Microwaves and televisions

• Bicycles and cars

• Pencils and paper

• Refrigerator doors and magnetic compasses

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Explain how an electromagnet works.

• An electromagnet works by using static electricity

• Passing an electric current through a coil of wire creates a magnetic field around the coil.

• Rubbing two magnets together creates an electric current

• An electromagnet is powered by solar energy