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physics
radiation flashcards
| Question | Answer |
|---|---|
| what is an isotope? | Same number of protons, different number of neutrons |
| what is alpha radiation made of? | 2 protons and 2 neutrons |
| what is beta radiation made of? | 1 electron ( from the nucleus ) |
| what is gamma radiation made of? | An electromagnetic wave |
| what’s the charge of alpha radiation? | +2 |
| what is the charge of beta radiation? | -1 |
| what is the penetration power of alpha radiation? | stopped by few cm of air, won’t go through skin |
| what’s the penetration power of beta radiation? | stopped by few mm of aluminium, skin will mainly stop it |
| what’s the penetration power of gamma radiation? | reduced by several cm of lead, or several meters of concrete |
| what’s the order for ionising effect, from strongest to weakest? | alpha, beta, gamma |
| what’s the danger of high ionisation in the body? | change DNA, high damage can kill cells, lower damage causes cancer |
| what piece of equipment is used to detect radiation? | geiger counter |
| what are some background sources of radiation? | radon gas medical procedures cosmic rays food and drink |
| what happens in alpha radiation equations? | number of protons go down by 2, mass number goes down by 4 atom becomes different element, two places below in periodic table |
| what happens in beta radiation equations? | number of protons go down by 1 |
| how do we dispose of low level radiation waste? | bagged, put in landfill |
| how do we dispose of medium level radiation waste? | landfill if short lived, or disposed with high level |
| how do we dispose of high level radiation waste? | buried underground in geologically secure site |
| why do radioactive isotopes release radiation? | imbalance between protons and neutrons |
| is alpha radiation a helium nucleus or a high energy electron? | helium nucleus |
| is beta radiation a helium nucleus or a high energy electron? | high energy electron |
Created by:
willum
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