Kids Riddles

Question: There are 2 fathers and 2 sons going on a fishing trip. Every person catches one fish. In total, there were only 3 fish. How is that so?

Question: What can one not keep, two hold, and three destroy?

Question: You have a glass of water that looks about half full. How can you tell, only using the glass of water itself, if the glass is half full or not?

The glass is a right cylinder.

Question: Imagine you are swimming in the ocean and a bunch of hungry sharks surround you. How do you get out alive?

Question: How many seconds are in a year?