Machines and Mechanisms Review

Simple and Complex Machines

100

This simple machine can be seen holding things together like desks, chairs and pieces of wood

Screw

200

Examples of these simple machines are ramps at skate parks and seesaws and playgrounds

Inclined planes and levers

300

This simple machine is used a lot in construction cranes and wells

Pulley

400

What is the difference between a simple machine and a complex machine?

A simple machine just has one function. A complex machine is something that is made up of two or more simple machines like a bicycle or a car

500

What are all six simple machines that we learned about?

Wheel and axle, screw, lever, inclined plane, wedge and pulley

Pulleys

100

What type of pulley has a wheel that does not move?

A. Fixed

B. Moveable

C. Compound

D. Floating

A. Fixed 

200

What type of pulley has a wheel that moves?

A. Fixed

B. Moveable

C. Compound

D. Floating

B. Moveable

300

What type of pulley is a combination of two types of pulleys and uses more than one wheel?

A. Fixed

B. Moveable

C. Compound

D. Floating

C. Compound

400

Does a pulley require you to use more force or less force when lifting an object?

Less force

500

What is an example of a pulley in real life?

A crane, a well, an elevator

Gears

100

If a gear is turning clockwise, what direction will the second gear turn?

Counter-clockwise

200

If the first gear has more teeth than the second gear, will the second gear turn faster or slower?

The second gear will turn faster

300

If the first gear has more teeth will it turn with more force than the second gear that has less teeth?

The first gear will turn with less force

400

What real life objects use gears?

A bike, a clock, a watch

500

What are gears used to change?

A. Force

B. Direction

C. Movement

D. All of the above 

D. All of the above - gears change force, direction and movement

Vocabulary

100

This type of motion moves in a circular path

Rotary motion

200

This type of motion moves in a straight line

Linear motion

300

How do we use torque every day?

Opening the classroom door, we use turning force with the door handle as it rotates to open and close

400

What type of machines consist of two or more simple machines?

Complex machines

500

What does input mean?

A. The space you apply force to make a machine move (ex. a bike pedal)

B.The space that lets the energy from the force leave the machine (ex. the back wheel of a bike)

A. The space you apply force to make a machine move (ex. a bike pedal)