Good Riddles

Question: These are the three lives of mine:
So gentle I soothe the skin,
So light I caress the sky,
So hard I crack rocks.

What am I?

Question: I'm red, blue, purple and green.
No one can reach me, not even the queen.

What am I?

Question: 100 feet in the air, yet its back is on the ground.

What is it?

Question: When do you go at red, but stop at green?

Question: How can you make a TV, a bed, a dog, and a car liquid?