An alpha particle, which is relatively large and easily stopped by matter, is a type of what?

An alpha particle, which is relatively large and easily stopped by matter, is a type of what?

• Correct Answer: radioactive emission
• free emission
• waste emission
• plant emission

Explanation: Alpha, beta, and gamma emissions have different abilities to penetrate matter. The relatively large alpha particle is easily stopped by matter (although it may impart a significant amount of energy to the matter it contacts). Beta particles penetrate slightly into matter, perhaps a few centimeters at most. Gamma rays can penetrate deeply into matter and can impart a large amount of energy into the surrounding matter. Table 11.1 "The Three Main Forms of Radioactive Emissions" summarizes the properties of the three main types of radioactive emissions. Table 11.1 The Three Main Forms of Radioactive Emissions.

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