How was the elevator broken, as revealed in a flashback?

Leonard's rocket fuel experiment

How does Sheldon knock on Penny's door?

Three knocks and her name, three times

The Big Bang Theory Quiz: The Broken Elevator and Apartment 4A

This The Big Bang Theory quiz climbs the stairs of 2311 North Los Robles Avenue in Pasadena. Play 10 interactive questions on the elevator that never works, the flashback revealing why it broke, Apartment 4A shared by Sheldon and Leonard, Penny across the hall in 4B, Sheldon's spot on the couch, his knock, Bazinga and the final season fix.

Start the Big Bang Theory Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Network
Which network aired The Big Bang Theory?
City
In which California city do the friends live?
Elevator
What is wrong with the building's elevator?
Cause
How was the elevator broken, as revealed in a flashback?
Apt
Which apartment do Sheldon and Leonard share?
Penny
Which apartment does Penny live in?
Spot
What does Sheldon insist on at home?
Knock
How does Sheldon knock on Penny's door?
Word
Which catchphrase does Sheldon use after a joke?
Fix
When was the elevator finally repaired?

Explanations: answer key for all 10 questions

Q1: Which network aired The Big Bang Theory?
Answer: CBS
It ran from 2007 to 2019.
Q2: In which California city do the friends live?
Answer: Pasadena
They work at Caltech.
Q3: What is wrong with the building's elevator?
Answer: It is out of order
Characters always take the stairs.
Q4: How was the elevator broken, as revealed in a flashback?
Answer: Leonard's rocket fuel experiment
Sheldon moved in that day.
Q5: Which apartment do Sheldon and Leonard share?
Answer: 4A
Penny lives across the hall.
Q6: Which apartment does Penny live in?
Answer: 4B
She works at the Cheesecake Factory at first.
Q7: What does Sheldon insist on at home?
Answer: His own spot on the couch
He explains why it is ideal.
Q8: How does Sheldon knock on Penny's door?
Answer: Three knocks and her name, three times
It is a running joke.
Q9: Which catchphrase does Sheldon use after a joke?
Answer: Bazinga
It appeared on T-shirts.
Q10: When was the elevator finally repaired?
Answer: In the final season
It runs again in season 12.

A Broken Elevator and Apartment 4A

The Big Bang Theory, which aired on CBS from 2007 to 2019, follows physicists Sheldon Cooper and Leonard Hofstadter, who share Apartment 4A in a Pasadena building. Their neighbor Penny lives across the hall in 4B, and their friends Howard and Raj often drop by.

The building's elevator is always out of order, so many scenes take place on the stairs. A season 3 flashback reveals it broke when Leonard's experiment with rocket fuel exploded, on the day Sheldon interviewed him as a roommate. The elevator was finally repaired in season 12.

Sheldon insists on his own spot on the couch and knocks on Penny's door three times while saying her name, repeated three times. His catchphrase Bazinga became famous. Jim Parsons won four Emmys as Sheldon, and the prequel Young Sheldon followed his childhood.

What This Quiz Teaches

Sitcom fans will enjoy these questions.

Where the friends live
Why the elevator broke
Who lives in which apartment
Which habits Sheldon has
When things changed

Did You Know?

The show ran for 279 episodes.
Comic book store owner Stuart is a friend.
Amy Farrah Fowler marries Sheldon.
Bernadette marries Howard.
The theme song is by Barenaked Ladies.