Match the term with the correct definition.

Fusion

1.the energy of heat
2.the basic unit of measure for light
3.the science dealing with the conversion of heat and energy
4.a nuclear reaction in which the nucleus of atoms are joined
5.a nuclear reaction in which a nucleus of atoms is divided

4.a nuclear reaction in which the nucleus of atoms are joined

Fusion - 4. a nuclear reaction in which the nucleus of atoms are joined