Final Review #2 (Conductivity, Lightning)

Front

Electrons flow from the negative terminal to the positive terminal in a battery because electrons are ____________ charged and are __________ by the negative terminal.

Back

negatively charged; repelled

Front

What is a lightning bolt composed of?

Back

moving electrons

Front

Which part of the cloud typically becomes negatively charged?

Back

The bottom

Front

Ionic bonds could be best described as:

Back

An electrostatic attraction between oppositely charged ions.

Front

A positively or negatively charged atom is called a __________.

Back

ion

Front

What is conductivity?

Back

The ability of a material to allow the flow of electric current.

Front

What is the role of electrons in electrical conductivity?

Back

Electrons are the charge carriers that move through a conductor to create an electric current.

Front

What happens to air particles during a lightning strike?

Back

They become heated and expand rapidly, creating a shock wave that we hear as thunder.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electric current to flow easily, while an insulator resists the flow of electric current.

Front

What is static electricity?

Back

A buildup of electric charge on the surface of objects.