physics 10 2 radiation :)

what are alpha particals

alpha particals contain 2 protons and 2 neutrons, they are emitted from the nuclius however they do not go very far - they float like hellium but they bump into things and ionise them by knocking of the electrons, they will only rise a few cm before being

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how do alpha particals ionise things

because of there size they are strongly ionising , they collide into atoms and knock the electrons of them

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what is the symbol for a alpha partical

a

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how ionising are alpha particals

alpha particles are very ionising due to there size

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are alpha particals in anyway uselfull

yes, they are used in the home in smoke detectors, they ionise air particals casing a current to flow - if smoke is in the air alpha particals bind to the ions - the current stops and the alarm sounds

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summery of alpha particles

-symbol is a, they have the same nuclei as a helium and they contain 2x prontons 2x neutrons - they will not travel very far before being absorbed in a sheet of papaer , alpha radiation is when a alpha particle is emitted from the nucleus and alpha partic

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beta particles symbol

b

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what are beta particles

a high speed electron released from the nuclius

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what are beta particles charge/ mass

virtually no mass with a charge of -1

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how ionising are beta particles

beta particles are moderatly ionising

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how do beta particles collied

beta particles penerterate moditeraly into materials before they collied

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what are beta particals absorbed by

aliminum

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how high can beta particals go

high, a few meter

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what happens to the neutrons in the nucleous when the beta particals are emitted

for every beta particle emitted , the neutrons in the nucleus turn unto protons

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how can beta radiation be useful

beta radiation can be useful due to the fact that it is moderatly penetarating

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how can beta emissions be useful

to test the varistion of thickness in the metal due to unlike alpha particles they are not absorbed quickly and immediatly so they can show variations in thickness of metals

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beta particles summery

beta particles symbol is b , beta particals have virtually no amss and can be absorbed by aliminium 5 mm thick, beta particles are just a relaly fast speed electron and they often are used to test the thickness of metals , beta particles penetarate modite

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alpha particals summery

alpha particles - symbol a used in smoke alarms are fully absorbed by a sheet papaer and when they are emitted froma nucleus alpha radiation takes place they contain 2x protons 2x neutrons

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what is a gamma ray

gamma rays are rays of electro magnetic radiation relesed by the nucleas

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how far will gamma rays travel through te air

gamma rays will penetarate into materials without being stopped and will travel far through the air

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how ionising are gamma rays

gamma rays are not really very ionising because they dont really collied into things instead thry pass through rather than hit the atom

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physics 10 2 radiation :)

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