The atomic bomb
The atomic bomb(shown in the top right) was a bomb that was dropped on Japan. Specifically dropped on the cities of Hiroshima and Nagasaki. When it explodes it created a mushroom like cloud(shown to the left) and destroys everything in its path. If you get caught in the center of the bomb you'd be dead, but for the people who were outside more they would be majorly scarred/burnt(shown in the top left). If you were outside of it even more you would eventually die from radiation poisoning.