Answer:
You can always see it, but it's too far away to touch. Mountains rest on it, and at sea it surrounds you. What is it?
What is that over the head and under the hat?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
It's equally comfortable in an orchestra and a geometry textbook. What is it?
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
What language does a billboard speak?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?