Unit 6: Electricity & Magnetism

Why might a glove stick to a sweater when you take them out of the clothes dryer?

• Both items are dry

• The glove and the sweater have opposite charges

• An electric current flows between the glove and the sweater

• An electric current reduced the number of electrons in both items.

What happens when you flip on the switch for alight?

• The electrical source turns on.

• The circuit closes, and the electric current flows to the light.

• The circuit opens, and electric current flows to the light.

• Electrical current is transferred from a different load to the light.

In which part of a circuit is electrical energy changed into other forms of energy?

• Load

• Wire

• Switch

• Battery

Which of these materials is a conductor?

• Rubber

• Plastic

• Glass

• Copper

Which of these materials is an insulator?

• Glass

• Steel

• Copper

• Aluminum

Look at the diagram above, which object could replace the switch and still allow the bulb to light up?

• Rubber band

• Strip of Cloth

• Steel Paper Clip

• Wooden Toothpick

A scientist wants to design a new hair dryer. Which would be the BEST material to use for the handle of the hair dryer?

• Iron

• Silver

• Rubber

• Aluminum

Which of these materials will a magnet attract?

• Copper

• Rubber

• Nickel

• Plastic

Look at the drawing above. If you tried to move these magnets closer together, what would you feel?

• A push

• A pull

• No force

• An Electric Discharge

Which statement about magnets is true?

• All magnets have the same size and shape

• All magnets have a north and a south pole.

• Magnets can attract all objects made of metal

• Magnets cannot attract objects through solid substance