E-mail your answer . Perhaps he forgot it. Anyway, all his potential energy got turned into kinetic energy. He landed in a forest covered in deep snow, and this saved him. Return to index Nuclear energy is the energy present in atoms and released in nuclear reactions.
Nuclear reactions take place in stars including the sun.
These reactions also take place in substances like Uranium and Plutonium. There are two main kinds of nuclear reactions, fission and fusion. In the sun and other stars, atoms of Hydrogen combine to form Helium, this is called fusion. Fusion only takes place at very high temperatures and pressures. When two atoms of Hydrogen combine to form one atom of Helium, some of their mass is converted into energy.