once started, why can nuclear fission continu...
once started, why can nuclear fission continue to occur on its own? the thermal energy released can cause the products to join. the neutron formed by the reaction can cause more nuclei to combine. the thermal energy released can cause the products to split. a neutron begins the reaction, and more neutrons are formed in it.
Answer
# Brief Explanations:
Nuclear fission is a chain - reaction process. A neutron initiates the fission of a nucleus, and during the fission, more neutrons are released. These newly formed neutrons can then go on to cause fission in other nuclei, sustaining the reaction. Thermal energy is not what directly causes products to split or join in the context of sustaining fission. Also, fission is about splitting, not combining nuclei.
# Answer:
A neutron begins the reaction, and more neutrons are formed in it.