Nuclear Energy Energy – It’s Everywhere!

2 Nuclear Energy Atoms are small particles that make up all matter. Each atom is made of outer electrons and a dense core, called the nucleus. While most nuclei are stable, some break apart with the release of energy – lots of energy! Nuclear energy is converted to heat energy, which can be used to generate electrical power.

Nuclear Fuel Uranium, a natural element found in the earth, is the typical fuel for nuclear power. In the nuclear reaction, uranium breaks into smaller atoms, some of which are very dangerous Natural UraniumEnriched Uranium

Energy in a Nuclear Reaction Nuclear reactions, like the break-up of uranium produces much more energy than burning coal – about one million times more energy! No greenhouse gases like carbon dioxide are produced in a nuclear reactor. 4

5 Nuclear Reactor

6 Inside A Nuclear Reactor Fuel rods hold the uranium reactor fuel. The uranium nuclei split, releasing a large of energy and two small particles (called neutrons.) The neutrons can strike other uranium atoms, making them split. The control rods absorb neutrons, preventing them from splitting other atoms, slowing the reaction.

Nuclear Power Plants in the US

Nuclear Power Safety  Because nuclear reactions produce so much power, reactors must be made very safe.  Some of the atoms that are produced by the break up of uranium are hazardous and must be stored securely for many, many years.  Nuclear reactors have operated in the US in a very safe manner. 8