( P2) Nuclear radiation 3.0 / 5 based on 1 rating ? ScienceRadiationGCSEOCR Created by: AnjelalaCreated on: 20-05-13 01:37 What does it mean when a atom is 'neutral'? It contains the same number of protons and electrons 1 of 21 Briefly describe what Ionisation is .. Ionisation involves losing or gaining electrons. 2 of 21 WHen do atoms become positively charged? When an atom loses electrons 3 of 21 When do atoms become negatively charged? When an atom gains electrons 4 of 21 What can the formation of ions cause? The formation of ions can cause chemical reactioisns. 5 of 21 Where do Alpha, beta and gamma radiation come from? The nucleus of an atom. 6 of 21 Which radiation cause the most ionisation? Alpha radiation causes the most ionisation 7 of 21 Which radiation causes the leasst inonisation? Gamma radiation causes the least ionisation. 8 of 21 What are the propertites of Aplha radiation? > Short ranged ( a few centimeter) > easily absorbed by a sheet of paper /card. 9 of 21 Explain the properties of betta radiation? > A range of about 1m > absorbed by a few millimeters of aluminium. 10 of 21 Explain the properties of Gamma radiation? > More penetrating > Will be stopped by a few milimeters of lead, > some can pass through several meters of lead/ concrete. > 11 of 21 Smoke alarms contain a source of......( complete sentence) Smoke alarms contain a source of alpha radiation. 12 of 21 Why would gamma radiation be used for meidcal instruments? >Gamma radiation kills bacteria and microbes . 13 of 21 name a waste product which can be used ro make nuclear bombs... Plutonium. 14 of 21 What happens to low level radio active waste? Some low level radio active waste are buried in landfills. 15 of 21 What happens to high level radio active waste? High level waste are incased in glass and buried deep underground or repreocessed. 16 of 21 How long can radioactive waste remain so for? Radioactive waste can remain radioactive for thousands of years. 17 of 21 Where must radioactive waste be stored? >Where it can't leak into natural underground water supplies and hence into lakes/ rivers 18 of 21 What are the advantages of nuclear power? >fossil fuel reserves aren't used > no greenhouse gases are discharged into atmosphere. 19 of 21 What are the disadvantages of nuclear power? >very high maintenance > decommissioning costs >risks of acciden similar to on at chernobyl.. 20 of 21 When carrying out experiment to identify radiation what should you keep in mind? > Background radiation should always be taken into account. 21 of 21
Comments
No comments have yet been made