Than a nun with a wind gun came and hit the rock millions of times. ( this shows that the rock is getting hit my the wind.)
after the nun with a gun shot him to a milion peices she got a way in a truck. ( this shows that the wind can break down rocks if given enough force and what is better then a gun at high speed things.)
The nun came back for more but this time she through a bomb at the pile of rocks. ( this shows how hear and preashure come in to play.)
now that the nun is gone the rock that the nun was killing is colling down . .......... but wait now there is a volcano that is spewing lava.
now that the rocks have cooled the nin came back to pick up the rock that she had killed, and the other lava is coolingto make ignis rocks.