Which radiation is high energy electromagnetic radiation?

Which radiation is two neutrons and two protons?

Which radiation is most strongly ionising (large charge)?

Which radiation penetrates through aluminium?

Which radiation is stopped by a few centimetres of air?

Which radiation is stopped by thin aluminium?

Which radiation is weakly ionising?

Which radiation is no deflected by an electric or magnetic field?

Which radiation is strongly deflected by an electric (or magnetic) field?

Which radiation can be used to measure the thickness of paper?

Which radiation can be used to treat some types of cancer?

Which radiation is often used in smoke detectors?

Which radiation is like helium nuclei?

Which radiation needs thick concrete to stop it completely?

Which radiation has no mass at all?