Which statement about fission is correct?

• Fission is the combining of nuclei to form new atoms
• Fission is the joining of neutrons by extreme pressure
• Fission is the splitting of a nucleus when it is bombarded by neutrons

Which statement about fusion is correct?

• Fusion is the combining of gamma rays that are bombarded by electrons
• Fusion is the combining of small nuclei under extreme heat and pressure
• Fusion is the splitting of atoms under extreme heat and pressure
• Fusion is the splitting of a nucleus when it is bombarded by neutrons

Einstein's equation can be used directly to find the mass lost in fusion reaction$\frac{E}{c^2}$

Uranium-238 is unstable isotope that is often used in fission reactions

Which term describes the reaction process in a fission reaction?

• chain reaction
• critical mass
• nuetron absorption
• nuetron moderation

Which of the following is NOT produced in fission reactions?

• greenhouse gases
• heat
• isotopes
• neutron

Which of the following is an element that is often used in fusion reactions?

• hydrogen
• lead
• uranium
• plutonium

If there is a loss of 4.36 × $10^{-5}$ g of mass in a nuclear reaction, how much energy would be released? Recall that c = 3 × $10^8$m/s.

• 1.45 × $10^{-13}$ kJ
• 3.92 × $10^6$ kJ
• 3.92 × $10^9$ kJ
• 3.92 × $10^{12}$ kJ

Which of the following statements about fusion and fission is correct?

• Fusion and fusion both split atoms
• Only fusion occurs in the sun
• There are currently working reactors producing electricity of both types on Earth
• Fission and fusion are completely safe and are without danger

If 7.84 × $10^7$ J of energy is released from a fusion reaction, what amount of mass in kilograms would be lost? Recall that c = 3 × $10^8$ m/s.

• 7.06 × $10^{24}$
• 8.71 × $10^{-4}$
• 8.71 × $10^{-7}$
• 8.71 × $10^{-10}$