Identify suitable materials that absorb or reduce alpha, beta and gamma radiation.

Within Radioactive decay and nuclear radiation, this learning objective asks you to identify suitable materials that absorb or reduce alpha, beta and gamma radiation. Focus on the approved ideas gamma radiation and connect them clearly to Atoms and nuclear radiation. A strong response should state the relevant particle, radiation, isotope, decay, half-life or nuclear-equation idea, then explain how it answers the exact command word. Avoid swapping nearby concepts such as atomic number and mass number, isotope and ion, alpha, beta and gamma radiation, or contamination and irradiation.