List and explain the precautions that can be taken to reduce the danger to living things from ionising radiation.

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

The figure uses symbols. Write full name of $\alpha$.
 

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

The figure uses symbols. Write full name of $\beta$.

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

The figure uses symbols. Write full name of $\gamma$.

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

State which type of radiation is most penetrating.

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

State which type of radiation can be absorbed by a few centimetres of air or by a thin sheet of paper.

The figure given below shows how the three types of radiation from radioactive substances are absorbed by different materials.

State which types of radiation are absorbed by a thick sheet of lead.