Background Radiation and Contamination

Contamination

________ is especially dangerous because radioactive particles could get inside your body.

Gloves

________ and tongs should be used when handling sources, to avoid particles getting stuck to your skin or under your nails.

Exposure

________ to radiation is called irradiation.

Radiation

________ from space, which is known as cosmic rays.

Gamma sources

________ are the least dangerous inside the body, as they mostly pass straight out- they have the lowest ionising power.

dose

The ________ from background radiation is small, so millisieverts are often used.

Background radiation

________ is the low- level radiation thats around us all the time.

effects of irradiation

Keeping sources in lead- in boxes, standing behind barriers or being in a different room and using remote- controlled arms are all ways of reducing the ________.

Beta sources

________ are less damaging inside the body, as radiation is absorbed over a wider area, and some passes out of the body although.

radiation doss

The ________ tells you the risk of harm to body tissues due to exposure to radiation.

Contamination

________ is radioactive particles getting onto objects.

Contamination

________ or irradiation can cause different amounts of harm.