Final answer:
During nuclear fission of a uranium nucleus, the energy released is primarily in the form of heat, light, and gamma radiation.
Step-by-step explanation:
When a uranium nucleus undergoes fission, the energy released is primarily in the form of heat, light, and gamma radiation. During the process of nuclear fission, a neutron collides with the uranium nucleus, causing it to split into two smaller-mass nuclei, also known as fission fragments, and releases a significant amount of binding energy. This binding energy is converted into kinetic energy of the fragments which is eventually converted to heat. Additionally, the energy is also released in the form of gamma radiation