Answer:
I shrink smaller every time I take a bath. What am I?
I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths.
Never resting, never still. Moving silently from hill to hill. It does not walk, run or trot. All is cool where it is not. What is it?
Crooked as a rainbow and slick as a plate, ten thousand horses can't pull me straight. What am I?
A prisoner is told 'If you tell a lie we will hang you if you tell the truth we will shoot you.' What can the prisoner say to save himself?
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.