mmm, it depends. Usally it's "headmaster" or "sir". At other times later in the siries, he might call him Dumbledor when he is mad. Bye the way you spelled Dumbledor wrong.
You Snape him.
Snape killed Dumbledore. It seems all part of Dumbledore's ultimate and all-transcending plan. He was on the brink of perishing anyway, due to a horcrux curse damaging him as seen by the blackening of his one arm.
Dolores Umbridge
none really know who it was
Tobias Snape is Severus Snape's father.
Snape Snape Severus Snape.
Severus. I know a song Snape Snape Severus Snape! Found it online
It called him an uglygit, an idiot and a slimeball.
dumbledoor did, yes
Poor, more, lore, pore, gore, door, tore, you're, soar, sore, four, galore, and core. ( PS You spelled it wrong, it's spelled dumbleDORE not dumbleDOOR. )
~Yes it means Harry controls the Elder Wand. Because the Elder wand is controlled by whoever defeats its previous welder(owner).Notes:1. Voldemort killed himself (accidentally).2. Neither Snape or Voldemort has ever been the real master of the Elder Wand. (Read the book for more information.)Another reply: Yes, Harry controls the elder wand - but not for the reasons given in the question. The way Harry explained it:It was not really Snape who defeated Dumbledore, but Draco Malfoy. This made Draco the owner of the elder wand.Harry later defeated Draco, becoming the owner of the elder wand.
Sam Snape's birth name is Christopher Snape.