Fill in the Blanks MechanismsOnline version Fill in the gaps by Miguel Castillo 1 technological Root Engine new development always The of machines has gone hand - in - hand with scientific and progress , discoveries of materials and industrial developments . 2 uses motion engine history know Famous wheels The gearbox of a Formula 1 is made up of helical gears that transmit the force and from inside the engine to the car's . It might look like a complex , modern machine , but the mechanisms it have been the basis of many machines throughout . 3 real inventions To in by For example , they were used Leonardo da Vinci many of his .
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