Screw & Wheel and Axle
Inclined Plane & Wedge
Pulley
Lever
Bonus
100

True or False: a screw is an inclined plane wrapped around a cylindrical post.

True! 

100
What is another word for an inclined plane?

Ramp

100

What are the 3 types of pulleys?

Fixed pulley

Moveable pulley

Compound pulley

100

Draw a first class lever


100

A machine that is made of two or more simple machines is called a...

Complex machine

200

What is the vertical distance between the threads on a screw called?

The pitch 

200

How do you calculate (formula) the mechanical advantage of an inclined plane and wedge? 

hypotenuse/height

200

What type of pulley is this?

Fixed pulley

200

Draw a second class lever 


200

A group of parts that work together to perform a single function within a machine.

System

300

True or False. The wheel and axle are a combination of two different diameter wheels that turn separately

False: The wheel and axle are a combination of two different diameter wheels that turn together

300

True or False: After applying the force, the wedge redirects the outward force to an downward force.

False!  After applying the force the wedge redirects the downward force to an outward force. 


300

What type of pulley is this?

Compound pulley 

300

What is the word for the point on which a lever rests or is supported and on which it pivots?

Fulcrum

300

What is the name of the machine that is used for transferring water from a low-lying body of water into irrigation ditches?

Archimedes screw

400

What is the mechanical advantage of a screw with a pitch of ⅛, and a circumference of 0.79 inches?



circumference of a screw/pitch of a screw


0.79/(1/8) = 6.32

400

You are moving boxes into a moving van. Draw the picture and point to where the effort or force is coming from in this diagram: 

The force is coming from pushing the box up the ramp from the bottom.

400

What are the 2 components of a pulley? 

A pulley consists of a rope or cable moving on a grooved wheel

400

What class of lever is a hockey stick?

Class 3. 


400

This simple machine helps reduce the force needed to lift an object, by changing the direction of the force applied. 

Pulley

500

If a wheel's radius is 60cm and its axle is 30cm, what is the mechanical advantage of the wheel and axle?

radius of wheel/radius of axle


60/30 = 2

500

What is the mechanical advantage of an inclined plane that is 10 meters long and 7 meters high?

hypotenuse/height. 

10m/7m

= 1.4

500

What is the mechanical advantage of this pulley?  


6

500

The distance from the fulcrum to the effort force applied is 120cm. The distance from the fulcrum to the load applied to the lever is 30cm. What is the mechanical advantage of the lever?


120 cm/30 cm 

= 4

500

What were the 3 cartoons we watched in class?

Recess, Pinky and The Brain, and The Road Runner
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