This activity allows the user to see the results of a fire on a randomly generated forest.
The probability that a tree will burn is chosen by the user, and the fire is started. The ignite radius of the fire is 50 pixels. For each tree the same probability "die" is thrown to see if that tree will burn or not, given that it's within the ignite radius.
The behavior of this activity is chaotic, since we cannot predict in advance whether a particular tree is burned or not, and since small changes in the set probability and the location of the initial burning can radically alter the final state of the forest. However, general patterns in the burning of the trees can be seen for particular probabilities.