Easy Riddles and Answers

Question: I have all of your knowledge but could fit in your hands.

What am I?

Question: what is in the middle of the sky?

Question: Does a ton of feathers or a ton of bricks weigh more?

Question: I have Eighty-eight keys but cannot open a single door?

What am I?

Question: Timmy's mother has three children. The first was named April. The next was named May.

What is the final one's name?