Flashcards
Atoms and radiation- additional-physics
Flashcards do conjunto (6)
- 1Definition of isotope:Different forms of same element with the SAME number of PROTONS but different number of NEUTRONS
- 2Most elements have different isotopes but theres one or two ____________ ones. The other isotopes tend to be __________, meaning they decay into other elements and give out ___________.stable
radioactive
radiation - 3Radioactivity is completely random. Radioactive substances give out radioactivity from nuclei of atoms.You cannot do anything to make decay happen.
Cannot predict which ones will decay. - 4Definition of background radiation: 3 things we recieve it from:-radiation that is present at all times.
-unstable isotopes everywhere(air,rocks,food), radiation from space called cosmic rays,man made sources such as dumped nuclear waste - 5Radiation dose depends on ___________ and _____________. How likely you are to suffer depends on type of ___________ and ___________. The higher the dose the more likely you are to develop cancer.location
occupation
radiation
amount - 63 examples where radiation dose is high:-areas with certain underground rocks e.g granite, especially if they produce radon gas which gets trapped in houses
-high altitudes in planes, this increases background radiation due to more exposure to cosmic rays
-underground e.g mines, increases because of certain rocks