In Chapter 9 of Harry Potter and the Philosopher's Stone, what is the name of the sport played on broomsticks?

In Chapter 9 of Harry Potter and the Philosopher's Stone, who is the captain of the Gryffindor Quidditch team?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what does Harry see when he looks into the Mirror of Erised?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what is the name of the three-headed dog guarding the trapdoor?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what is the name of the game Hermione plays with the enchanted chess pieces?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what does Harry use to catch the flying key in the Hogwarts obstacle course?

In Chapter 9 of Harry Potter and the Philosopher's Stone, who guards the entrance to Gryffindor Tower?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what is the name of the person who steals the Sorcerer's Stone?

In Chapter 9 of Harry Potter and the Philosopher's Stone, what is the name of the game Harry plays during his first flying lesson?