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Definitions
Levers
Multiple Choice
Mixture of Questions
100

One of a set of toothed wheels that work together to transfer a force. 

Gear

100

In this lever, the load is between the fulcrum and the effort. 

Class 3

100

Wheels and rollers work by reducing which force?
A) Gravity
B) Friction
C) Pushing
D) Pulling

B) Friction

100

How does a pulley help us lift heavy objects?

When we pull down on a pulley, the downward force produces an opposite upwards force. We can use more than one pulley to magnify the force we are applying. 

200

A wheel with a grooved rim around which a cord passes. It acts to change the direction of a rope applied to the cord and is mainly used to raise heavy weights. 

Pulley

200
In this lever, the effort is between the fulcrum and the load. 
Class 1
200
The first wheel was used for...

A) A car
B) Machines
C) Pottery
D) A Bicycle

C) Pottery

200

How does a bicycle use gears and a chain to move a load?

A bicycle uses 2 gears - one attached to the pedals and one attached to the back. When you pedal the larger gear on the pedal, the smaller gear on the wheel spins more times, which means the wheel rotates more than the pedal. This allows your force into the pedal to be magnified. 

300

The point on which a lever rests or is supported and on which it pivots. 

Fulcrum

300
In this lever, the fulcrum is between the load being moved and where the effort is being applied. 

Class 2

300

When you pull down on a pulley, the load will go...
A) Up
B) Down
C) Sideways
D) Nowhere

A) Up

300

What is the difference between a roller and a wheel and axle?

Rollers are long cylinder shaped objects that can be used to move heavy loads. They do not move with the object.
A wheel works just like a roller, but the wheel is attached to the object that is being moved.

400

The resistance that one surface or object encounters when moving over another. 

Friction

400

In a second class lever, the load is place in between the fulcrum and the effort. Given this information, which of the following is not a second class lever?
A) Bottle Opener
B) Paper Cutter
C) Nutcracker
D) Fishing Rod

Fishing Rod

400
Bobby would like to move her piano from the living room to the den. What device would be best for her to use to safely move the piano? 

A) Rollers
B) Lever
C) Gear
D) Wheelbarrow

A) Rollers

400

Who first used rollers?

The first rollers were used thousands of years ago by the Ancient Egyptians to move large stones for their pyramids. They used tree logs are rollers.  

500

A rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other. 

Levers

500

What happens when we move a fulcrum in a lever? Where do we move the fulcrum to make the load lighter?


Moving the fulcrum makes the force stronger.

To make the load lighter, you can move the fulcrum closer to the object you are lifting. 

500

In a hockey stick, the handle of the stick acts as the:
A) Load
B) Fulcrum
C) Force
D) Lever

D) Lever

500

Why was the invention of the wheel an improvement over rollers and how are wheels used now? 

The wheel was a big improvement because the wheel is attached to the object or load. This means you can move the object or load wherever you need to. With rollers, you had to move the rollers as you moved the load. We use wheels to drive vehicles or move loads like in a wheelbarrow.