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In the Genesis flood story, for how many days did the floodwaters prevail over the earth?
Answer
150 days
What type of machine did Leonardo da Vinci design to measure humidity using a balance?
Answer
Hygrometer
What mechanical component is Leonardo da Vinci often credited with sketching in an early form?
Answer
Ball bearing
What ship feature did Leonardo da Vinci propose to improve watertightness?
Answer
Double hull
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How many levels did Genesis specify for Noah's Ark?
Answer
Three
What ship feature did Leonardo da Vinci propose to improve watertightness?
Answer
Double hull
What self-supporting staircase concept did Leonardo da Vinci draw with two interlocking spiral flights?
Answer
Double helix staircase
What powered flying-machine concept did Leonardo da Vinci design using a pilot’s legs and arms to turn wings?
Answer
Human-powered ornithopter
What wheeled invention by Leonardo da Vinci is often called an early self-propelled cart?
Answer
Self-propelled cart