Simple Machine -Screws

What is a Screw?

• Move heavy loads vertically.

• Is an incline plane around a cylinder that fasten two objects together.

• An object used to tear apart.

• A wheel and a rope to move or change direction of an object

Identify what the line on the left is pointing to on the image shown:

• Thread

• Shaft

• Pitch

• Head

Identify what the line on the top right is pointing to on the image shown:

• Thread

• Shaft

• Pitch

• Head

Identify what the line on the bottom right is pointing to on the image shown:

• Thread

• Shaft

• Pitch

• Head

The pitch is the

• Distance between threads

• Cylinder of the screw

• The ridges on the cylinder

• None of the above

The Thread is the

• Distance between threads

• Cylinder of the screw

• The ridges on the cylinder

• None of the above

The Shaft is the

• Distance between threads

• Cylinder of the screw

• The ridges on the cylinder

• None of the above

Which object is NOT considered a screw?

• Bolt

• Drill Bit

• Light Bulb

• Nail

The Mechanical Advantage of a screw when the threads are closer is:

(Select all that applied)

• Easier to drive

• Harder to drive

• Takes less effort

• Less turns

• More Effort

The Mechanical Advantage of a screw when the threads are wider is:

(Select all that applied)

• Easier to drive

• Harder to drive

• Takes less effort

• Less turns

• More Effort