Riddle: I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
Answer: Sand.
Riddle: Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters. What is it?
Answer: Wind.
Riddle: Die without me, Never thank me. Walk right through me, Never feel me. Always watching, Never speaking. Always lurking, Never seen. What am I?
Answer: Air.
Riddle: Pregnant every time you see her, yet she never will give birth. What is she?
Answer: Full moon.
Riddle: Each morning I appear to lie at your feet, all day I will follow no matter how fast you run, yet I nearly perish In the midday sun. What am I?
Answer: Your shadow.
Riddle: What is that which the dead and living do at the same time?
Answer: Lie.
Riddle: We are five little objects of an everyday sort. You will find us all in a tennis court. What are we?
Answer: Vowels.
Riddle: Of no use to one Yet absolute bliss to two. The small boy gets it for nothing. The young man has to lie for it. The old man has to buy it. The baby's right, The lover's privilege, The hypocrite's mask. To the young girl, faith; To the married woman, hope; To the old maid, charity. What am I?
Answer: A kiss.
Riddle: Three lives have I. Gentle enough to soothe the skin, Light enough to caress the sky, Hard enough to crack rocks. What am I?
Answer: Water. Explanation: Water can be in the form of a liquid, solid (ice), and/or a gas (water vapor) which is represented by "three lives".  As a liquid, it is used to bathe, as a gas it creates clouds that float in the sky, and as a solid (ice), it can split rocks or create glaciers that scour the earth as they move downhill.
Riddle: I look flat, but I am deep, Hidden realms I shelter. Lives I take, but food I offer. At times I am beautiful. I can be calm, angry and turbulent. I have no heart, but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?
Answer: An ocean.