Using radioactivity

Question 1

Food irradiation

Answer 1

radiation used to sterilise food

Question 2

sterilisation of equipment

Answer 2

medical equipment (syringes etc.)

Question 3

Tracer solution

Answer 3

a liquid containing a radioactive isotope which is injected into the body

Question 4

Why is alpha radiation used in smoke detectors

Answer 4

because it is blocked easily

Question 5

Dangers of radioactivity

Answer 5

Person irradiated if exposed to radiation
Person contaminated if bits of radioactive material gets on their skin or inside them

Question 6

Why are large amounts of ionising radiation dangerous

Answer 6

Can cause skin burns

Question 7

Why are small amounts of ionising radiation dangerous

Answer 7

can damage DNA and cause mutations if radiated over long period of time