Answer:
I hide but my head is outside. What am I?
What goes up and down, but does not move?
You used to come to me for all sorts of information and knowledge before the internet was born
Where did the baseball keep its lemonade?
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic