(Worm and Wheel gears)
What is the angle of the input shaft compared to the output shaft?
Is the speed increased, decreased, or constant?
Is the torque increased, decreased, or constant?
Label the worm and wheel gears.
What is the gear ratio?
Is the flow of power reversible? (Can you make the input shaft turn by turning the output shaft?)
Is the direction of travel reversible? (Does the mechanism still work if the input shaft is turned in the opposite direction?)
List an example where this mechanism might be used. A helpful search term is worm gear.