Nuclear Energy

Question 1:Diagram 1 shows a nuclear fission process of radioactive substance.(a) Name energy S and ray T in the boxes provided in Diagram 1. [2 marks](b) State one use of:(i) Energy S [1 mark](ii) Ray T in medical field.[1 mark](c) State one method to detect the presence of ray T. [1 mark](d) What is the effect on … Read more

Question 1:Diagram 1 shows three radioactive radiations, P, Q and R.(a) Name radioactive radiations P and R. [2 marks](b) State the charges of radioactive radiation P and Q.[2 marks](c) Name the substance that can stop the penetration of radioactive radiation R. [1 mark](d) Name the radioactive radiation which is used to kill cancer cells. [1 … Read more

6.3 Proper Handling of Radioactive Substances 6.3.1 Effects of Radioactive Radiation on Living Things 1. Radioactive substances are highly hazardous. 2. The energy in radiation can destroy molecules in living tissues and kill cells. 3. The effects of radioactive radiation on living things depend on the total amount of radiation received. 4. Diagram below shows … Read more

6.2.3 Uses of Nuclear Fusion 1. Nuclear energy is used to (a) Generate electrical energy (b) Operate satellites (c) Propel cruises, aircraft carriers and submarines   Nuclear power station 6.2.4 Process of Generating Electricity from Nuclear Energy 1. In a nuclear power station, nuclear energy is produced in a nuclear reactor to generate electricity. 2. Figure … Read more

6.2.2 Nuclear Fusion 1. Nuclear fusion is a process that two light nuclei combine to form a heavier and more stable nucleus together with the release of a huge amount of nuclear energy. Nuclear fusion 2. The energy produced by nuclear fusion is safe to use as no radioactive radiation is produced during the process.   3. A hydrogen bomb … Read more

6.2.1 Production of Nuclear Energy and Its Uses Nuclear energy can be produced in nuclear reactors through the following two methods: (a)  Nuclear fission (b)  Nuclear fusion 6.2.1 Nuclear Fission 1. Nuclear fission is a process involving the splitting of a heavy nucleus into two nuclei of roughly equal mass and shooting out several neutrons at … Read more

(C) Radioisotopes Radioisotopes are isotopes of a radioactive substance. Examples of Radioisotopes Carbon-14 (Carbon dating) Cobalt-60 (Radiotherapy) Uranium-235 (Nuclear fuel) Uranium-238 Plutonium-238 Plutomium-239 (Nuclear fuel) Uses of Radioisotopes 1.   There are two types of isotopes, namely a.   the stable isotopes (non-radioactive) b.   the non-stable isotopes (radioactive). 2.  Unstable isotopes go through radioactive … Read more

(B) Types of Radiation 3 types of radioactive radiation might be released from a nucleus during a radioactive decay, namelya.   Alpha radiation b.   Beta radiation c.   Gamma radiation Penetrating Power Deflection in Electric Field  

(A) The Composition of the Nucleus Stability of Nucleus The nucleus becomes unstable if it has too many protons, too many neutrons or too much energy. Radioactive Decay 1.   The unstable nucleus will decay to release radioactive radiation. 2.  Radioactivity is the spontaneous process of an unstable nucleus emitting radioactive emission in order to become … Read more

6.1 Radioactive Substances 1.   Radioactive substances are substances with unstable nuclei in their atoms. Unstable nuclei will decay and emit radioactive radiation. 2.  Examples of radioactive substances are: (a)  Carbon-14 (b)  Cobalt-60 (c)  Iodine-131 (d)  Uranium