Lesson 17: Introduction to Insulators

Introduction to Insulators

Introduction

Hello 3rd grade scientists!  You learned how to use the power of conduction to create your very own solar oven.  Today, let’s take a look at insulators. 

First, here are some key facts about thermal insulators:

 

Insulators are opposite of conductors.  They resist heat transferring, or passing through.  

 

Thermal insulators create a barrier between hot and cold materials. This reduces heat transfer from one object to another.  This keeps cold objects cold and hot objects hot.

 

 

Thermal insulators, such as a jacket, are good materials for keeping people warm.  

Visual

Let's compare the images below. Which one doesn't belong? 

Woman wearing a jacket.

Styrofoam takeout container.
Thermos

Pot on a stove.

 

image-6.pngAssignment

For today’s assignment, you will create a discussion posting that answers the following questions about the images. 

  • Which item does not belong?
  • How did you come to that conclusion?
  • Was there anything that made this tricky?

Click the Next button to go to today's discussion posting assignment.

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