Question

what is the most penetrating kind of radiation product that can be shielded with aluminum foil?
○ alpha particles
○ beta particles
○ gamma rays
○ high-energy photons

Explanation:

1. Recall the penetration and shielding of different radiations:

• Alpha particles: Have low penetration, can be stopped by a sheet of paper or skin.
• Beta particles: Have moderate penetration, can be shielded by aluminum foil (a few millimeters thick).
• Gamma rays: Have high penetration, require thick lead or concrete for shielding, not aluminum foil.
• High - energy photons (often gamma - like in terms of penetration): Also require heavy shielding like lead, not aluminum foil.

1. Among the options, beta particles are the most penetrating radiation that can be shielded with aluminum foil.

Answer:

B. beta particles