Ex. 5. Do the quiz. Complete the following statements. 1. Nuclear power plants work on the chemical process of ... a) fusion; b) fission. 2. A nuclear weapon is an explosive device that derives its destructive force from ... a) fusion; b) only fission; c) both fission and fusion. 3. A fission bomb is an explosive weapon that uses ... as fuel. a) uranium; b) plutonium; c) both uranium and plutonium; d) hydrogen isotopes. 4. The symptoms of acute radiation sickness are ... a) skin burns, nausea, or vomiting; b) high temperature, high pressure, blindness. 5. In Japan only ... a) one nuclear weapon has been detonated. b) two nuclear weapons have been detonated. 6. There are ... official nuclear powers in the world. a) five; b) eight; c) ten.