Rveision 3.0 / 5 based on 1 rating ? ScienceGCSEOCR Created by: ImranCreated on: 28-04-13 11:02 Contamination Breathing or coming into contact with a radioactive chemical 1 of 19 Irradiation Affected indirectly,e.g. the sun 2 of 19 Radioactive decay When a neutron leaves an atom and is a completely random occurance 3 of 19 Neutrons= Mass number - Atomic number 4 of 19 Alpha waves Weakest of all waves but release 2 neutrons and 2 protons 5 of 19 Beta waves Releases electrons 6 of 19 Gamma rays Most penetrative waves and gives off waves 7 of 19 Isotope Same number of protons but different number of neutrons 8 of 19 Natural radioactive sources The sun,Radon gas 9 of 19 Artificial sources X-rays,Things we create 10 of 19 Half life The time it takes for a radioisotope to decrease by 50% (Short half life shows activity falls faster because nuclei decays in short time) 11 of 19 Steralization Gama rays are used to sterilize food and medical equipment 12 of 19 Radio therapy Gamma rays can be used to kill cancer cells however the damage is unavoidable as it can make the patient ill 13 of 19 Gamma rays detect leaks in pipers It is injected into a pipe and the Geiger meter measures if any has been released 14 of 19 Radiation badges Different photographic films pick up any levels of radiation which is then investigated 15 of 19 Nuclear power station Nuclear fission -> Boiler -> Turbine -> Generator -> National grid 16 of 19 Fuel rods Made up of radioactive substances that decay to release heat 17 of 19 Reactor core Like a safe where Chronium is found 18 of 19 Heat exchanger Cools down fuel rods so they dont over heat 19 of 19
Comments
No comments have yet been made