Is it true or false that exposure to all ionizing radiation is controlled solely by the use of lead shields?

The statement that exposure to all ionizing radiation is controlled solely by the use of lead shields is false. While lead shielding is highly effective for attenuating certain types of ionizing radiation, particularly gamma rays and X-rays due to lead's high atomic number and density, it is not the only measure for controlling radiation exposure.

Different types of ionizing radiation, such as alpha and beta particles, require varying protection strategies. For example, alpha particles can be stopped by a sheet of paper or human skin, while beta particles may require plastics or other materials. Additionally, radiation safety necessitates the use of other protective measures like distance, time, and administrative controls, which can further reduce exposure risks.

Thus, the correct understanding encompasses a broader range of radiation protection strategies beyond just lead shielding, making the answer false.