On the atomic scale, which is the strongest fundamental force?

• gravitational

• electromagnetic

• strong nuclear

• weak nuclear

Describe the difference between nuclear fusion and nuclear fission.

• Fission breaks large atoms apart; fusion brings small atoms together

• Fission brings small atoms together; fusion breaks large atoms apart

• Fission releases energy; fusion absorbs it

• Fission absorbs energy; fusion releases it

If a positively charged object is brought near a negatively charged object, what will happen?

• The two objects would repel

• The two objects would not interact

• The two objects would attract

• The two objects would initially attract and then repel.

If an object has zero charge, it will have an electric force of

The closer the objects, the ________ the electric force.

• larger

• smaller

• more positive

• more negative

The smaller the charge, the ________ the electric force

• larger

• smaller

• more positive

• more negative

If I have two negatively charged particles, what will happen?

• nothing

• they will attract

• they will repel

What does the strong nuclear force do?

• Releases energy

• Hold together the nucleus

• Create radiation

Which options describe a proton?

• negative charge

• found in the nucleus

• positive charge

• does not have a net charge

Where do we get our nuclear energy on Earth?

• nuclear fission

• nuclear fusion