Answer:
What can be measured but not seen?
When it is alive we sing, when it is dead we clap our hands. What is it?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
What tastes better than it smells?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
What language does a billboard speak?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?