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P2 and P3 physics
P2 and P3 physics key terms
|The most ionizing type of radiation
|A secondary source of energy
|At the end of their lifetime, ower stations are dismantled. This is called
|Used fuel rods in a nuclear power station are an example of this type of waste
|strontium 81 has a half-life of 22 minutes. How long would it take for 80g of strontium to reduce to 20g?
|A form of an element with a different number of neutrons in the nucleus.
|Used to kill cancer cells.
|A type of radiation which is most dangerous if it gets inside the body.
|The biggest source of background radiation.
|When scientists use computer models to predict the effects of increasing CO2 levels.
|These are frozen records of the past. They trap tiny bubbles of air containing the gases that were in the atmosphere thousands of years ago.
|A process which living things use to make energy. It releases CO2 into the atmosphere.
|This is dissolved into the sea from the atmosphere.
|If there was no greenhouse effect the earth would be too
|Mobile phones use this type of radiation
|The heating effect of non-ionizing radiation depends on its duration (exposure time) and its
|An energy packet of radiation
|The chemical formula for ozone