DISCUSSION: You’ll want to support the answer using a reference from the passage. But make sure to read all the answers before trying to support or eliminate some.
If you remembered lines 33-34 then this was an easy question, otherwise it was hard. That’s why it’s important to have a clear idea of the passage before starting, even if it means rereading some sections.
- The experimental physicists didn’t disagree with the theoretical findings. They just didn’t expect fission to happen from bombardment. (lines 20-22)
- The passage never mentions anyone revising the earlier theoretical work. Presumably it was correct.
- Actually, Hahn did identify these by-products. Read the second part of the third paragraph, especially lines 42-44.
- We’re never told about experiments splitting other types of atoms.
- CORRECT. See lines 33-34. Physicists recognized the dangers, that’s one reason they hadn’t analyzed the by-products of bombarded uranium.
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