Kids Riddles

Question: I am an instrument that you can hear, but you can not touch or see me.

What am I?

Question: In a pond there are some flowers with some bees hovering over the flowers. How many flowers and bees are there if both the following statements are true: 1. If each bee lands on a flower, one bee doesn't get a flower. 2. If two bees share each flower there is one flower left out.

Question: I have a name that's not mine,
and no one cares about me in their prime.
People cry at my sight,
and lie by me all day and night.

What am I?

Question: Two people are born at the same moment, but they don't have the same birthdays.

How could this be?

Question: I can be used to build castles,
but I crumble in your hands.
I can help a man see,
and am found all around the lands.

What am I?