A scientist has two radioactive substances. One emits beta particles, and the other emits alpha particles. He thinks that since the alpha particles are larger, they are more dangerous to humans. Is he correct? Why or why not?
No, because beta particles move faster and can penetrate into the human body more easily.
No, because neither type of particle is dangerous to humans.
Yes, because alpha particles move more slowly, and therefore leave more lasting damage to humans.
Yes, because the larger particles carry more energy and can cause more damage to cells.
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