1 What does the term “c^2” in Einstein’s equation mean for conversion between mass and energy?
A. A large amount of mass can be converted into a large amount of energy.
B. A small amount of mass can be converted into a small amount of energy.
C. A small amount of mass can be converted into a large amount of energy.
D. A large amount of mass can be converted into a small amount of energy.
2 In what form of energy do nuclear power plants harness nuclear energy?
A. heat
B. explosions
C. radiation
D. light
3 Where does nuclear fusion occur naturally?(1 point)
A. in nuclear power plants
B. in experimental facilities
C. underground
D. in the Sun and other stars
4 The scientific unit of measurement for energy is the joule (J: kg×m2/s2). If three grams of matter are converted to their equivalent amount of energy, about how much energy is released (use c=3×108 m/s )?
A. 9×10^5 J
B. 9×10^8 J
C. 2.7×10^14 J
D. 2.7×10^17 J
5 The scientific unit of measurement for energy is the joule (J: kg×m2/s2). If 1012 J of energy is produced by the conversion of matter to energy, about how much mass was converted into energy (use c=3×108 m/s)?
1.1×10−5 kg
3.3×10^4 kg
3×10^20 kg
9×10^28 kg