List of Topics

SfC Home > Physical Science > Machines >


Mini-Quiz: Tools Used to Perform Simple Tasks

by Ron Kurtus (revised 12 July 2013)

Take this Mini-Quiz to check your understanding of the lesson material.

1. Is a toothbrush a tool?

Yes, because it uses wedges and friction to perform a task

No, because you must use toothpaste to make it work

It is a simple machine, because it contains a lever

2. Why is friction required in a tool like a pair of pliers?

Friction is not needed, since a pair of pliers uses two levers

Without friction, the pliers would become a scissors

Friction is needed to for the pliers to grasp the object and for you to hold onto the pliers

3. When a crow uses a twig to probe for insects, is that really using a tool?

No, because a twig is not a simple machine

Yes, because it is a simple device used to perform a task

Animals are not smart enough to use tools

If you got all three correct, you are on your way to becoming a Champion in Understanding Machines. If you had problems, you had better look over the material again.

Use all the tools at your disposal

Resources and references

Ron Kurtus' Credentials


Machines Resources


Top-rated books on Basic Tools

Top-rated books on Simple Machines

Questions and comments

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

Share this page

Click on a button to bookmark or share this page through Twitter, Facebook, email, or other services:


Students and researchers

The Web address of this page is:

Please include it as a link on your website or as a reference in your report, document, or thesis.

Copyright © Restrictions

Where are you now?

School for Champions


Mini-Quiz: Tools Used to Perform Simple Tasks

Topics on Machines

Simple machines

Mechanical advantage



Other machines


Also see

Let's make the world a better place

Be the best that you can be.

Use your knowledge and skills to help others succeed.

Don't be wasteful; protect our environment.

You CAN influence the world.

Live Your Life as a Champion:

Take care of your health

Seek knowledge and gain skills

Do excellent work

Be valuable to others

Have utmost character

Be a Champion!

The School for Champions helps you become the type of person who can be called a Champion.