Chapter 8: Electricity & Magnetism

_____ are the tiny particles that make up all the matter around you.

• Electrons

• Atoms

• Neutrons

• Protons

What does an electric field surround?

• an electron

• a neutron

• both an electron and a neutron

• neither an electron nor a neutron

As two objects that are oppositely charged are brought closer together, which will happen?

• The objects will always gain electrons.

• The objects will repel each other.

• The objects will attract each other.

• The strength of the electric fields on the objects will increase.

What part of an electric circuit is the source of electric energy?

• battery

• lightbulb

• switch

• wire

What small portable energy source transforms chemical potential energy to electrical energy?

• solar cells

• generators

• batteries

• fuel cells

Gemma holds a magnet next to her refrigerator. The magnet sticks. She then holds a steel pin next to the refrigerator. The pin does not stick. Gemma's observations show that the refrigerator is _____.

• a compass

• a magnet

• a non-magnet made of magnetic material

• a non-magnet made of nonmagnetic material

What type of circuit allows current to flow in only one path?

• series

• parallel

The south pole of a magnet will do what to a north pole of another magnet?

• repel

• attract

The lights in the classroom are set up in a series configuration.

• True

• False

Materials that keep their magnetic fields for long periods of time are hard magnetic materials. These are considered _____ magnets.

• temporary

• permanent