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The most commonly used 'nuclear fuel' for nuclear fission is Uranium-235. ‒‒‒‒‒‒ 8 Completed forms to be made available for external moderation. a) Describe what happens to a Uranium-235 nucleus when it undergoes nuclear fission. b) In a nuclear fission reactor for electrical power generation, what is the purpose of i) the fuel rods ii) the moderator iii) the control rods iv) the coolant? IF [Suggested word count

The most commonly used 'nuclear fuel' for nuclear fission is Uranium-235. ‒‒‒‒‒‒ 8 Completed forms to be made available for external moderation. a) Describe what happens to a Uranium-235 nucleus when it undergoes nuclear fission. b) In a nuclear fission reactor for electrical power generation, what is the purpose of i) the fuel rods ii) the moderator iii) the control rods iv) the coolant? IF [Suggested word count

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Question 12 The most commonly used 'nuclear fuel' for nuclear fission is Uranium-235. 8 Completed forms to be made available for external moderation. a) Describe what happens to a Uranium-235 nucleus when it undergoes nuclear fission. I= b) In a nuclear fission reactor for electrical power generation, what is the purpose of i) the fuel rods ii) the moderator iii) the control rods [Suggested word count iv) the coolant? 150] The following paragraph contains a number of errors (somewhere between 1 and 5). Rewrite this passage, correcting any errors that are contained there. It should be possible to do this by replacing just one word within a sentence with another. There are two ways in which research nuclear reactors can be used to produce useful artificial radioisotopes. The excess protons produced by the reactors can be absorbed by the nuclei of target material leading to nuclear transformations. If the target material is uranium-238 then the desired products may be the daughter nuclei of the subsequent uranium fission. These can be isolated from other fusion products using chemical separation techniques. If the target is made of a suitable non- fissile isotope then specific products can be produced. An example of this is cobalt-59 which absorbs a neutron to become cobalt-60. [4.2] Question 13
Transcribed Image Text:Question 12 The most commonly used 'nuclear fuel' for nuclear fission is Uranium-235. 8 Completed forms to be made available for external moderation. a) Describe what happens to a Uranium-235 nucleus when it undergoes nuclear fission. I= b) In a nuclear fission reactor for electrical power generation, what is the purpose of i) the fuel rods ii) the moderator iii) the control rods [Suggested word count iv) the coolant? 150] The following paragraph contains a number of errors (somewhere between 1 and 5). Rewrite this passage, correcting any errors that are contained there. It should be possible to do this by replacing just one word within a sentence with another. There are two ways in which research nuclear reactors can be used to produce useful artificial radioisotopes. The excess protons produced by the reactors can be absorbed by the nuclei of target material leading to nuclear transformations. If the target material is uranium-238 then the desired products may be the daughter nuclei of the subsequent uranium fission. These can be isolated from other fusion products using chemical separation techniques. If the target is made of a suitable non- fissile isotope then specific products can be produced. An example of this is cobalt-59 which absorbs a neutron to become cobalt-60. [4.2] Question 13
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