In this video, Karen Harpp, a professor of Geology and Peace and Conflict Studies at Colgate University, will explain the effects of an atomic bomb in various scenarios.
Now that you have more of an idea about how Fat Man looked in Nagasaki, it's time to apply it to a place you are familiar with. To do this you will be using the program NUKEMAP created by Alex Wellerstein at Stevens Institute of Technology. If you are not familiar with NUKEMAP we highly suggest going through the explanation that you can find here.
If you are familiar with NUKEMAP you can access the activity here.