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WorksheetsSM: Screw
Total questions: 32
Worksheet time: 30mins
What is a simple machine that does work with only one movement?
Complex machine
Simple machine
Electric machine
Hydraulic machine
What is a screw primarily described as?
A flat surface
A lever
An inclined plane wrapped in a spiral around a cylindrical post
A pulley
How is input force applied to a screw?
By pushing it
By pulling it
By turning it
By hitting it
What is the relationship between thread spacing and IMA in screws?
Large IMA means threads are farther apart
Small IMA means threads are closer together
Large IMA means threads are close together
IMA is not related to thread spacing
an inclined plane wrapped around a cylinder or a wheel and axle used to create rotary motion; used as a threaded fastener; can change a rotary motion into a linear motion
inclined plane
screw
lever
Identify the simple machine in the picture.
Lever
Inclined plane
Wheel and axle
Screw
A drill bit would be an example of which type of simple machine?
Lever
Wedge
Incline plane
Screw
Calculate the MA for a screw with these dimensions. (Use 3.14 for pi)
Diameter: 1.3 cm, Pitch: 0.25 cm
16.33
17.65
16.97
19.21
Calculate the MA for a screw with these dimensions. (Use 3.14 for pi)
Diameter: 2.4 cm, Pitch: 0.02 cm
163.3
376.8
385.4
236.1
Calculate the MA for the screw with the screw diameter 1/4 in and 3 threads per in. (Use 3.14 for pi)
2.79
2.38
3.24
1.33
Calculate the MA for the screw with the screw diameter 1/4 in and 12 threads per in. (Use 3.14 for pi)
14.13
9.46
4.71
2.36
Calculate the MA for the screw with the screw diameter 1/16 in and 12 threads per in. (Use 3.14 for pi)
14.13
9.46
4.71
2.36
Put the screw IDs in order from highest MA to lowest MA.
diameter 1/2 and 12 threads per in.
diameter 3/8 and 12 threads per in.
diameter 1/4 and 12 threads per in.
diameter 1/8 and 12 threads per in.
diameter 1/16 and 12 threads per in.
Put the screw IDs in order from highest MA to lowest MA.
diameter 1/4 and 24 threads per in.
diameter 1/4 and 16 threads per in.
diameter 1/4 and 15 threads per in.
diameter 1/4 and 12 threads per in.
diameter 1/4 and 7 threads per in.
Put the screw IDs in order from highest MA to lowest MA.
diameter 3/8 and 24 threads per in.
diameter 1/4 and 15 threads per in.
diameter 1/2 and 7 threads per in.
diameter 1/8 and 16 threads per in.
diameter 1/16 and 12 threads per in.
What is the pitch for a screw with MA of 16.485 and diameter of 3/8 in? (Use 3.14 for pi)
Include units.
(a)
If a screw has a mechanical advantage (MA) of 20.5 and a diameter of .4 inch, what is the pitch of the screw?
Include units. (Use 3.14 for pi)
(a)
If a screw has a mechanical advantage (MA) of 15.3 and a diameter of 0.5 inch, what is the pitch of the screw?
Include units. (Use 3.14 for pi)
(a)
A screw has a mechanical advantage (MA) of 12.5 and a diameter of 0.4 inch. What is the pitch of the screw?
Include units. (Use 3.14 for pi)
(a)
A screw has a mechanical advantage (MA) of 12.5 and a 16 threads/in. What is the diameter of the screw?
Include units. (Use 3.14 for pi)
(a)
A screw has a mechanical advantage (MA) of 10 and a 20 threads/in. What is the diameter of the screw?
Include units. (Use 3.14 for pi)
(a)
A screw has a mechanical advantage (MA) of 8 and a 25 threads/in. What is the diameter of the screw?
Include units. (Use 3.14 for pi)
(a)
Which of the following best describes the function of a screw?
To lift or hold objects together by converting rotational force into linear motion
To change the direction of a force using a rope
To split objects apart by applying force
To balance objects on a fixed point
What happens to the mechanical advantage of a screw if the pitch decreases while the diameter remains the same?
The mechanical advantage becomes zero
The mechanical advantage stays the same
The mechanical advantage decreases
The mechanical advantage increases
Which part of a screw determines how far it moves forward with each complete turn?
Material
Diameter
Pitch
Length
The ______________ is an inclined plane wrapped around a cylinder or cone. It is mostly used to hold objects together.
pulley
lever
wheel and axle
screw
A __________ is an inclined plane wrapped around a small rod used to hold objects together.
Wedge
Pulley
Screw
Wheel & Axle
What is a screw?
An inclined plane wrapped around a cylinder
A simple machine that uses grooves to lift objects
A device that uses a wheel to move objects
A type of lever
A screw is a _____ wrapped around a post or rod.
inclined plane
springs
treads
strings
A screw is like a:
ramp wrapped around a rod.
wedge with a stick
wheel moving up a ramp
pulley lifting a post
