Physics: Year 10 Term 1: Nuclear Fission 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: Charlotte HerondaleCreated on: 16-10-18 18:23 Define "fission" (2) The splitting of nuclei 1 of 10 What particles are used to induce fission? (1) Neutrons 2 of 10 What are the products of nuclear fission? (3) 2/3 high-speed neutrons; gamma radiation; daughter nuclei 3 of 10 What is a chain reaction? (2) When the released neutrons set off another fission and the chain continues setting off more 4 of 10 The most common element in a reactor is what? (1) Uranium 5 of 10 What is the enriched uranium in a reactor made of? (4) Non-fissionable U-238 and fissionable U-235 6 of 10 What is the moderator in a reactor and what does it do? (3) Water, slows down neutrons so they don't cause more fission 7 of 10 What do control rods do? (2) Absorb neutrons to keep reaction under control 8 of 10 The reactor core has very high what? (2) Temperature and pressure 9 of 10 Thick walls absorb what? (1) Ionising radiation 10 of 10
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