Nuclear Energy

Question 3:Reaction X always occurs in the Sun.(a) What is the reaction?(b) Explain why the reaction can occur on the surface of the Sun.(c) What would happen on Earth if the reaction you mentioned in question 3(a) suddenly stops? Answer:(a) Nuclear fusion (b) The Sun has very high temperature/ Rich in hydrogen (c) Earth would … Read more

Question 1:Photograph 1 shows a nuclear power station in a certain country. (a) Name two countries that are major users of nuclear energy.(b) Based on your answer in question 1(a), what is the use of nuclear energy in those countries?(c) State two advantages of nuclear energy sources. Answer:(a) France, Slovakia (b) • France uses nuclear … Read more

Question 1:State two main energy sources which are currently used in Malaysia. Answer:Natural gas, hydro Question 2:State three factors that must be considered in operating nuclear power stations. Answer:• Fossil fuels will deplete • Nuclear energy releases very little greenhouse gases  • The rate of production of energy by nuclear energy sources is greater compared … Read more

Question 1:State three adverse effects that may occur if nuclear weapons continue to be used. Answer:• World will be destroyed• Number of cancer cases increases• War will break out among countries with nuclear weapons. Question 2:What is the purpose of conducting nuclear tests? Answer:To ensure whether nuclear weapons can function.

Question 1:Fill in the blanks with the correct answers.(a) The process of ____________ occurs when a ___________ bombards a nucleus of large mass which then ______________ into two new nuclei of smaller mass that are nearly the same and more stable together with the release of energy. (b) The process of nuclear fusion only occurs … Read more

Question 1:State three major countries in the world that use nuclear energy sources. Answer:United States of America, Russia, France, Japan(any three) Question 2:What are the benefits of using nuclear energy sources compared to other energy sources? Answer:• Produce a lot of energy compared to fossil fuels • Release very little greenhouse gases compared to other … Read more

Question 1:(a) Diagram 1.1 and 1.2 shows activities which involved the radioactive substances.(i) State the radioactive radiation used in medical field in Diagram 1.1. [1 mark](ii) State the uses of Carbon-14 in Diagram 1.2. [1 mark](iii) State one effect of nuclear explosion to human being. [1 mark](iv) What substance is used to make a container … Read more