Explain how emitted neutrons can cause further fission events in a nuclear reaction.

Emitted neutrons from a fission event can collide with other large nuclei, causing them to become unstable and undergo fission themselves. This process can lead to a chain reaction, where multiple fission events occur in succession, releasing a significant amount of energy.

This question tests the understanding of the chain reaction mechanism in nuclear fission, focusing on the role of neutrons. A strong answer demonstrates knowledge of how neutrons initiate further fission, which is crucial for understanding nuclear reactions.