Answer:
I am a tale in childrens' minds. Though an illusion, I occur every night. I give them a fantasy, I give them a fright. 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?
I carry you down a gentle stream.
I am a delicious way of representing data.
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?