A fission reactor produces energy to drive a generator. Describe briefly how this energy is produced.

What factors make fusion difficult to achieve?

What is the charge of a baryon containing one up quark (u) and two down quarks (d)? F. −1, G. 0, H. +1, J. +2.

Which of the following choices does not correctly match a fundamental interaction with its mediating particles? A. strong: gluons, B. electromagnetic: electrons, C. weak: W and Z bosons, D. gravitational: gravitons.

Explain the main differences between alpha, beta, and gamma emissions.

Which is the weakest of the four fundamental interactions? F. electromagnetic, G. gravitational, H. strong, J. weak.

How many protons are there in the nucleus ${ }_{79}^{197} \mathrm{A u}$? How many neutrons? How many electrons are there in the neutral atom?

Explain the main differences between alpha, beta, and gamma decays.

Does the nuclear mass or the charge of the nucleus determine what element an atom is?

Name the four fundamental interactions and the particles that mediate each interaction.

What are the similarities and differences between fission and fusion?

Which of the following statements correctly describes a nucleus with the symbol ${ }_{6}^{14} \mathrm{C}$? A. It is the nucleus of a cobalt atom with eight protons and six neutrons. B. It is the nucleus of a carbon atom with eight protons and six neutrons. C. It is the nucleus of a carbon atom with six protons and eight neutrons. D. It is the nucleus of a carbon atom with six protons and fourteen neutrons.

How is energy use today different from energy use 200 years ago?

Infer whether a system can have kinetic energy and potential energy at the same time.