Riddles Part 1

Hello everyone!!
I'm very sorry that I haven't been posting recently, but i'll ty and post for the rest of the week. Today I decided to do something slightly diffrent. So I'm going to post 11 different  riddles or brainteasers (because if you haven't gusssed I really like riddles) and see if you can awnser them all:

1. A boy and his father are in a car crash and are badly hurt. They are both bought into hospital and on life support. One of the doctors comes in and says "Oh my gosh that's my son!" How is this possible?
2. I am all around you, but can't be seen. I can can be captured but not held. I have no throat but I can be heard. What am I?
3. You have 12 black socks and 12 white socks. Your're up very early so it's too dark to tell them apart. What's the smallest number of socks do you have to take out to be sure you have a matching pair.
4. You are the bus driver.At your first stop, you pick up 29 people. On your second stop, 18 of those 29 people get off, and at the same time10 new passengers arrive. At your next stop, 3 of those 10 passengers get off, and 13 new passengers come on. On your fourth stop 4 of the remaining passengers get off, 6 of those new 13 passengers get off as well then 17 new passengers get on. What is the colour of the bus drivers eyes?
5. A rooster lays an egg at the top of a slanted roof. Which side is the egg going to roll off on?

Hope you enjoyed :) I'll post the awnsers soon. Also this is part one, so I'll post some more later.

-R-