The well runs deep
Trivia questions and answers, drawn fresh from the well
239,757 public questions across 1,818 topics. Challenge yourself, or build the perfect quiz for game night.
239,757
Questions with answers
1,818
Topics to explore
3
Depths of difficulty
Today at the well
1 / 5 0
What Leonardo da Vinci invention used ball bearings to reduce friction between moving parts?
Answer
Ball bearing
What Leonardo da Vinci device was designed to raise water using a helical screw?
Answer
Archimedes’ screw
Which Leonardo da Vinci design used two separate hulls to improve a boat’s stability?
Answer
Double-hull ship
Which Leonardo da Vinci design used a large helical blade to imitate a helicopter?
Answer
Aerial screw
What Leonardo da Vinci invention is often called the world's first robotic vehicle?
Answer
Self-propelled cart
0 / 5
Round complete
239,757 trivia questions
Every question has an answer
1,818 public topics
Something for every quiz
Free to explore
Reveal answers at your own pace
Fresh from the well
Latest trivia questions
What Leonardo da Vinci device was designed to raise water using a helical screw?
Answer
Archimedes’ screw
Which Leonardo da Vinci design used two separate hulls to improve a boat’s stability?
Answer
Double-hull ship
What Leonardo da Vinci invention is often called the world's first robotic vehicle?
Answer
Self-propelled cart
Which two clubs played at 17:30 on Saturday during the 2026–27 Premier League opening weekend?
Answer
Brentford and Tottenham Hotspur
Which Pokémon's move creates grass in Pokémon Pokopia?
Answer
Bulbasaur