Answer: Nearly Headless Nick
Nearly Headless Nick is the ghost who resides in Gryffindor Tower.

Answer: Severus Snape
Lily Potter learned when was a witch from Severus Snape.

Answer: Holyhead Harpies
The Holyhead Harpies hold the distinction of being "the only all-witch team currently in the Quidditch league."

Answer: 3
A pure-blood is descended solely from wizardkind; half-bloods have at least one magical parent but also a nonmagical parent or grandparent, and muggle-borns are born to two nonmagical parents.

Answer: 4
There are four Houses at Hogwarts, one named after each of its founders.

Answer: Scotland
Hogwarts is secretly tucked away amongst the mountainous terrain of Scotland.

Answer: Hogwarts Express
The Hogwarts Express runs from London's King's Cross Platform 9 3/4 to Hogsmeade Station.

Answer: Tom and Merope
Voldemort's parents are Tom and Merope Riddle.

Answer: Uganda
The Uagadou School of Magic is located in Uganda.

Answer: Severus Snape
Spinner's End, located in Cokeworth, England, was the childhood home of Severus Snape.