Good Riddles

Question: I drape the hills in white,
I do not swallow, but I do bite.

What am I?

Question: Mr. Smith has 4 daughters. Each of his daughters has a brother.

How many children does Mr. Smith have?

Question: In a certain society any time somebody commits a serious crime they must be shot at twice with a 6 bullet revolver. The revolver only has two bullets in it though, both of them right next to each other. They spin the revolver once and shoot the gun. If there was no bullet in that chamber they give the prisoner the option to either spin the chamber again or just shoot again. If the first shot is a blank, should the prisoner ask for the revolver to be spun or should they choose that it be shot again?

Question: How many seconds are in a year?

Question: Soft and cuddly, I'll pull on your heart.
But take my last name and I'll tear you apart.

What am I?