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What spiral-shaped flying machine did Leonardo da Vinci sketch as an aerial screw?
Answer
Aerial screw
What canal lock did Leonardo da Vinci design to overcome differences in water level?
Answer
Miter gate lock
What multi-barrel artillery weapon did Leonardo da Vinci design with three rotating rows of guns?
Answer
33-barrel organ
What wearable rescue device did Leonardo da Vinci design as a pyramid-shaped parachute?
Answer
Pyramidal parachute
What winged aircraft did Leonardo da Vinci design with a rigid, fixed wing for gliding?
Answer
Glider
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What canal lock did Leonardo da Vinci design to overcome differences in water level?
Answer
Miter gate lock
What wearable rescue device did Leonardo da Vinci design as a pyramid-shaped parachute?
Answer
Pyramidal parachute
What water-control device did Leonardo da Vinci improve with a screw-shaped mechanism?
Answer
Archimedes’ screw
What named machine did Leonardo da Vinci design as a mechanical knight?
Answer
Leonardo’s robot
Where did Ray Kroc open the first McDonald’s restaurant he operated as a franchise?
Answer
Des Plaines, Illinois