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 large military weapon did Leonardo da Vinci design with a curved frame and a single massive projectile?
Answer
Giant crossbow
What solar-energy device did Leonardo da Vinci propose using mirrors to concentrate sunlight?
Answer
Solar furnace
What early friction-measuring instrument is attributed to Leonardo da Vinci?
Answer
Tribometer
What flapping-wing aircraft did Leonardo da Vinci design as a human-powered flying machine?
Answer
Ornithopter
What mechanical lifting device did Leonardo da Vinci design using a spiral screw?
Answer
Screw jack
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 water-powered machine did Leonardo da Vinci design to help lift water?
Answer
Archimedes’ screw
What armored military vehicle did Leonardo da Vinci design with a conical shell and cannons?
Answer
Fighting vehicle
What automated vehicle did Leonardo da Vinci design that is often called the world’s first robot?
Answer
Self-propelled cart
What rotating flying-machine concept did Leonardo da Vinci call an aerial screw?
Answer
Aerial screw