Answer:
When I get closer my tail grows longer but when I go away my tail leads the way.
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
Cloud is my mother. Wind is my father. I come down but never go up. What am I?
I can go through glass without breaking it.
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.