Uses of Radiation

Because ionising radiation is used in medicine and industry and can affect health

Because ionising radiation is only found in outer space

Because ionising radiation has no impact on humans

Because ionising radiation is always safe

yellow

blue

red

yellow

blue

red

The current increases and the alarm sounds

The current decreases and the alarm sounds

The current remains the same and no alarm sounds

The current decreases and no alarm sounds

One proton

A helium particle

One electron

One proton and one neutron

Alpha and beta; both used for sterilising food

Beta and gamma; beta for measuring thickness, gamma for cancer treatment and tracers

Alpha and gamma; alpha for smoke detectors, gamma for PET scans

Beta and gamma; beta for smoke detectors, gamma for sterilising medical equipment

Alpha radiation, because it is easily blocked by packaging

Beta radiation, because it penetrates all sides of instruments

Gamma radiation, because it is the most penetrating and can sterilise without removing packaging

Gamma radiation, because it is the least penetrating

Alpha

Beta

Gamma

Neutron

Americium-241

Strontium-90

Caesium-137

Phosphorous-32

Sterilising medical equipment

Treating cancer

Cooking food

Detecting leaks in pipes