nuclear radiation is used in medicine
xrays and gamma rays are electromagnetic waves
nuclear radiation damges cells
gamma rays and xrays have similar wave lengths but are produced in different ways.
what is my job called if i do xrays to make sure what is wrong with people?
how can radiation help with cleaning hospital equipment?
it stearlises it and cleans it for other use.
how can radiation help with a CT scan or xrays ?
it uses a small amount of radiation and passes it through the body to see what is wrong with the patient.
shows if they have broken bones or cancer cells.
which radiation types can be used as tracers?
air conducts electricity and a small current flows and smoke enters the alarm, this absorbs the a particles, the current reduces, and the alarm sounds.
smoke alarm uses what radiation?
carbon 14 is used too ?
is a radioactive isotope of carbon, Its nucleus contains 6 protons and 8 neutrons,
It's an isotope of Carbon and it is used for carbon dating for determining the age of rocks and such.
beta radiation is used for?
beta source can be used to measure the thickness of aluminium foil
exposing materials to radioactivity can make them absorb neutrons and becom radioactive.
write down one use of nuclear radiation?
background radiation is always present in the enirovnment? where does radiation come from?
soil and rocks
which types of nuclear radiation can pass through the skin?
people who work with nuclear radiation have to wear proective clothing. they must make sure that they are not exposed to too much radiation. give one reason why?
so they dont get exposed so they dont get cancerous cells.
radiaactivite alpha sources are used in smoke dectecors
background radiation comes from rocks and soil.
background radiation also comes from cosmic rays.
radioactivie carbon is used to work out the age of old materials such as eqyptian mummies or wooden object
tracers can be used to find leaks and blockages in underground pipes.
the radiation all around us is called background radiation.
tracers are also used to find the route or location of underground pipes.
radioactivity can also be used to date these .e.g rocks.
the plug has a fuse in it for safety. describe how the fuse works.
a fuse is a very thin wire so iff too much electricity goes in it , it snaps and doesnt let anymore electricty in it.
the hairdryer does not have an earth wire. it is double unsulated.
explain why a double insulated appliance does not need earthing?
it doesnt need an earth wire because the earth wire makes it safe but this appliance is double insulated so safe to touch.
noel first measures the radiation in the enviorment.
a) what do we call the radiaition that is always present?
b)where does this radiation in the environment
cosmic rays, rocks, soil
there are three types of nuclear radiation.
alpha and gamma are two of the types.
a) write down the name of the third type of nuclear radiation?