Question 1
The radioactive particles, alpha, beta and gamma ray, are called ionizing radiation because, as they pass through an object, they:
◦ attract ions
◦ knock electrons off atoms or molecules in their path
◦ repel ions
◦ decay into ions
Question 2
What protective shielding is sufficient for gamma rays?
◦ Lead sheet
◦ Aluminium sheet
◦ Paper
◦ All of the above