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What is a pulley?
Simple machine wheel system with groove to make tasks easier
What is a gear?
A special toothed wheel where one toothed wheel turns the other toothed wheel
List three examples of things that use pulleys
Crane, well, sailboat, blinds, elevator
List three examples of things that use gears.
Car, clock, bicycle, motorcycle, hand crank pencil sharpener
_________ is a measure of rotational force
Torque
___________ is a type of gear that connects at an angle
Bevel gear
__________ is a type of gear that has teeth that meet a flat surface
Spur gear
_________ is a type of gear with teeth that are at a right angle to a wheel
Crown Gear
_________ is a type of gear that is in between two other gears
Idler gear
which of the following uses a pulley?
Water well
A _______ pulley has a wheel that can move
movable pulley
Gears are used to change what three things?
Speed, direction, and torque
What is the input component of a bicycle?
Peddles
What is the output component of a bicycle?
Back wheel
If the input gear is turning to the left, the next gear in the chain will turn to the ________
right
What makes a gear turn?
Another gear or a force
