Match the type of radiation (1 to 3) with each of the...

Match the type of radiation $(1$ to 3$)$ with each of the following statements:
1. alpha particle
2. beta particle
3. gamma radiation
a. does not penetrate skin
b. shielding protection includes lead or thick concrete
c. can be very harmful if ingested

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Key Concepts

Alpha Radiation

Alpha radiation consists of helium nuclei, making them relatively heavy and highly ionizing, though they possess very low penetration power. They can be stopped by a sheet of paper or even the outer dead layer of human skin, but if alpha-emitting materials are ingested or inhaled, they can cause significant internal damage.

Beta Radiation

Beta radiation is composed of high-speed electrons or positrons, which have moderate penetrating power. While beta particles can pass through the skin, they are generally less ionizing than alpha particles and can be shielded by materials such as plastic or thin metals.

Gamma Radiation

Gamma radiation is high-energy electromagnetic radiation that is highly penetrating and requires dense shielding materials such as lead or thick concrete to reduce its intensity. It is less ionizing per unit of energy compared to alpha and beta particles, but its ability to penetrate deep into materials makes it a significant external hazard.

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