What Leonardo da Vinci invention used two linked hulls to improve a boat's stability?
Answer
Double-hull boat
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What Leonardo da Vinci invention used two linked hulls to improve a boat's stability?
Answer
Double-hull boat
What Leonardo da Vinci invention used a paddle wheel to move a boat against a river current?
Answer
Paddle-wheel boat
What Leonardo da Vinci invention recorded distance by dropping pebbles from a rotating wheel?
Answer
Odometer
What Leonardo da Vinci water-lifting device used a continuous helical screw?
Answer
Archimedes’ screw
What did Leonardo da Vinci’s early diving suit aim to let a diver do underwater?
Answer
Breathe
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What Leonardo da Vinci invention used a paddle wheel to move a boat against a river current?
Answer
Paddle-wheel boat
What Leonardo da Vinci water-lifting device used a continuous helical screw?
Answer
Archimedes’ screw
What Leonardo da Vinci machine featured a seated mechanical knight that could move its limbs?
Answer
Leonardo’s robot
What Leonardo da Vinci war machine had a conical armored body and many guns?
Answer
Armored tank
Where was the first transcontinental railroad in the United States officially completed in 1869?
Answer
Promontory Summit, Utah