No paragraph was given. The Story of Nuclear Energy and Terrorism No paragraph given. No bullet points or numbers. !!

Uranium is a radioactive metal that comes from the earth. It can be found in small amounts all over the world, but most of this uranium ore has been mined and processed for nuclear power plants to use as fuel.

When uranium decays into other substances—such as radium or lead–it releases energy which causes heat.

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These burning reactions create steam used to turn turbines that generate electricity (rare) over 100 years ago people discovered uranium could produce an enormous amount of energy if they let some particles separate inside a pile of sand piled on top of each other called “critical mass”.

While discovering how much material was necessary to form critical mass took time before long scientists had figured out how big their piles needed to be.


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