What are the primary effects of a nuclear explosion?

The primary effects of a nuclear explosion are indeed blast, heat, and radiation.

The blast effect refers to the shockwave that results from the rapid expansion of gases produced by the explosion. This shockwave can cause massive destruction, leveling buildings and causing injuries over a wide area.

Heat is generated almost instantaneously, creating an intense fireball that can ignite flammable materials and cause burns to anyone in close proximity. The heat can also lead to secondary fires that can spread over large areas.

Radiation is emitted as part of the explosion, presenting both immediate and long-term health risks. This includes initial radiation, which occurs during the explosion, and fallout, which consists of radioactive particles that can be hazardous to health if ingested or inhaled over time.

While other options include various phenomena related to explosions or other types of incidents, they do not encompass the unique and critical effects of a nuclear detonation as comprehensively as blast, heat, and radiation do.