Answer:
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
I go around a yard but do not move. What am I?
I stand in one place yet fill the whole room. I can be filled with molten rock and come in every hue. What am I?
You can catch me but cannot throw me.
I am easy to waste and unstoppable
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?