What is it Riddles
Riddle: What is the thing that can be seen but not touched, spoken but not heard, and thought but not seen?
Answer: An idea.
Riddle: What starts with an f and ends with a k but is needed in emergencies?
Answer: Firetruck!
Riddle: The sun bakes them, the hand breaks them, the foot treads on them, and the mouth tastes them. What are they?
Answer: Grapes.
Riddle: Formed long ago, yet made today, Employed while others sleep. What none would freely give away. Nor any wish to keep. What is it?
Answer: A bed.
Riddle: What sneaks through doors and windows without knocking? What heats an unlit stove? What gives the cat a snug place to rest?
Answer: The sun!
Riddle: What goes uphill and downhill, and always stays in the same place?
Answer: A road.
Riddle: Which letter of the alphabet has the most water?
Answer: The Letter C. The letter "C" sounds like the word "sea". The sea is a large body of salt water.  The riddle relies on a play on words (a pun) where the name of the letter "C" is phonetically identical to the English word "sea".
Riddle: What do you call a fly without wings?
Answer: A walk.  Another popular answer: A Zipper.
Riddle: What word contains 26 letters but only has three syllables?
Answer: The alphabet.
Riddle: It is said among my people that some things are improved by death. Tell me, what stinks while living, but in death, smells good?
Answer: A Pig.
Riddle: This thing all things devours: Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountain down. What am I?
Answer: Time!
Riddle: What falls but never breaks? What breaks but never falls?
Answer: Night and Day!
Riddle: What is a device that you always have access to, that do not require recharging, and can record all of the useful information you have learned?
Answer: Your brain!
Riddle: What 7-letter word has all 5 vowels and a q in it?
Answer: Sequoia.
Riddle: What did the mountain climber name his son?
Answer: Cliff.
Riddle: What name besides Anna reads the same both ways?
Answer: Hannah.
Riddle: What gets bigger the more you take away?
Answer: A hole.
Riddle: Everywhere it lurks, unsettling men and unnerving children. In a house it visits, in a cave it dwells. One light can put it to flight and make it retreat. Yet you can never escape it, for it is always there. What is it?
Answer: The shadows.
Riddle: A word to the wise is sufficient. What is the contradictory proverb?
Answer: Talk is cheap.
Riddle: Many hands make light work. What is the contradictory proverb?
Answer: Too many cooks spoil the broth.