Pulleys
Gears
Bicycles
Key Terms
Structures and Mechanisms
100
A wheel with a grooved rim around which a cord passes.
What is a pulley.
100
A set of toothed wheels.
What is gears.
100
________ are what allow riders to control the effort that they need to apply to move the bike forward.
What is gears.
100
The advantage we gain by using mechanics to do something.
What is a mechanical advantage.
100
This type of pulley helps raise a flag on a pole.
What is a fixed pulley.
200
This type of pulley does not reduce the amount of effort force that is needed to lift a load.
What is a fixed pulley.
200
When gears are _________, the two gears spin in opposite directions.
What is interlocking.
200
This level of gear is good when riding uphill.
What is low gear.
200
The name given to the object being lifted.
What is a load.
200
We must work against _____________ when trying to lift a load.
What is the force of gravity.
300
This single wheeled pulley system helps reduce the amount of effort needed to lift a load.
What is a movable pulley.
300
The direction 2 gears rotate when connected by a belt or chain.
What is the same direction.
300
This level of gear makes my pedalling speed fast.
What is a low gear.
300
The work needed to lift an object.
What is effort force.
300
The machine that is used in construction to help lift very large loads.
What is a crane
400
More ______ must be pulled in order to lift a load while using a combined pulley system.
What is rope.
400
Gears that interlock at an angle.
What is bevel gears.
400
The smallest gear on the back wheel of your bike is known as _________.
What is the highest gear.
400
The force that keeps everything attached to the ground.
What is the force of gravity.
400
Pulleys and gears are referred to as _________.
What is mechanics.
500
The ____________ is responsible for determining the amount of effort needed to lift a load in a pulley system.
What is the amount of pulleys.
500
This type of gear moves the back windshield wiper of a car.
What is a worm gear.
500
This level of gear allows the rider to reach maximum speeds while on a flat surface.
What is a high gear.
500
Strength or energy attributed to a physical action or movement.
What is a force.
500
The vehicle we seen that had all of the types of gears in it.
What is a car.
M
e
n
u