Answer:
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
I have two body parts but am used to measure length. What am I?
I run around the streets all day. Under the bed or by the door I sit at night, never alone. My tongue hangs out, waiting to be fed during the day. What am I?
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
I am born in fear raised in truth and I come to my own in deed. When comes a time that I'm called forth I come to serve the cause of need.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.