Spells and charms
Minor characters in Harry Potter
Food in Harry Potter
HP Actors in other Films/TV shows
Harry Potter Geography
100

Though it's primarily used to defend oneself against an enemy, this spell is what Harry eventually uses to defeat Voldemort. 

What is "Expelliarmus"?

100

This teacher took over the post of Potions Master after Snape became the Defense Against the Dark Arts teacher. 

Who was Slughorn?

100
"Rock Cakes" are made by this character, eaten by Harry, Ron and Hermione mostly out of politeness.

Who is Hagrid?

100
Dame Maggie Smith who plays Professor McGonegall was also popular on which period drama that took place during World War I in Britain? 

What is Downton Abbey?

100

This inn and pub is located in Hogsmeade 

What is The Three Broomsticks?

200

These are the three "unforgivable curses".

What are "Imperio", "Crucio" and "Avada Kedavra?

200

This was Sirius Black's brother. 

Who was Regulas Arcturus Black, also known as R.A.B.?

200

Buckbeak is fed this animal by Hermione and Harry in the end of Harry Potter 3. In Harry Potter 4, MadEye Moody turns Draco into this animal until he is scolded by Professor McGonegall. 

What is a ferret?

200

Alan Rickman who plays Professor Snape was featured as Colonel Brandon in the 1995 version of this Jane Austen novel. 

What is Sense and Sensibility?

200

This is where Lily and James Potter lived and were buried.

Where is Godric's Hollow?

300

Lumos is used to illuminate a wand. This spell is used to extinguish it.

What is "nox"?

300

This character replaced Fudge as the Minister of Magic.

Who is Rufus Scrimgeour?

300

What one would order at Florean Fortescue's shop in Diagon Alley. 

What is ice cream?

300

This Harry Potter actor showed his singing talents in the Broadway musical How to Succeed in Business Without Really Trying.

Who is Daniel Radcliffe?

300

In Ottery St. Catchpole and it's environs, one can find the Weasleys, the Lovegoods, and what other family featured in Harry Potter 4?

What is the Diggory's?

400

Episkey is used by Tonks in the books and Luna in the movies to  help Harry with this problem.

What is to heal his broken nose? Draco Malfoy had broken his nose on the train at the beginning of HP 6.

400

This female house elf who formerly belonged to Barty Crouch, Sr. is unhappily employed at Hogwarts. 

Who is Winky?

400

This is Harry's favorite dessert, mentioned in several of the books.

What is treacle tart?

400
Gary Oldman who plays Sirius Black also played this historical figure in the movie Darkest Hour.

Who is Winston Churchill?

400

The name of Bill and Fleur Weasley's home after they get married. 

What is Shell Cottage?

500

This is the charm that eventually takes Gilderoy Lockhart out of commission in Harry Potter 2.

What is "Obliviate"?

500

This was Fleur's date to the Yule Ball in Harry Potter 4.

Who is Roger Davies?

500

Fred and George sell this package of treats to other students who want to skip classes by pretending they are ill. 

What are "skiving snack boxes"? 

500

This is the name of the actor who played Dumbledore in the first Harry Potter movie.

Who was Richard Harris?

500

When Hermione apparates with Ron and Harry in Harry Potter 7 to escape from Bill and Fleur's wedding, they go to this crowded London area.

What is Picadilly Circus?