Heating and Cooling3rd Grade Science

Teacher: Mrs. Joiner

Elluminate Housekeeping

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S3P1. Students will investigate how heat is produced and the effects of heating and cooling, and will understand a change in temperature indicates a change in heat.

a. Categorize ways to produce heat energy such as burning,

rubbing (friction), and mixing one thing with another. b. Investigate how insulation affects heating and cooling. c. Investigate the transfer of heat energy from the sun to various

materials.

Explore Our Standards

What do you know about how things heat up?

What do you know about how things cool off?

Heating and Cooling

Many things give off heat. Heat is sometimes very hot! All heat is energy.

That’s Hot!

Sun Fire Electricity

Pretend you are at a campfire roasting a hot dog on a metal wire coat hanger.

Slowly the end of the hanger warms up, as it takes in the heat from the fire.

Campfire Activity!

If you leave the hanger in the fire for a long time, the whole hanger will become very hot to touch!

Why Does This Happen?

It heats up even though the handle end was never placed into the flames.

Heat moves from the flames to the metal handle.

From there it moves to all the molecules in the hanger by conduction until it reached your fingers.

Here’s The Reason…

Heat can move from one object to another, or from one molecule to another through the process of conduction.

Heat On The Move!

What Is A Molecule?

A molecule is like a tiny building block that makes up everything around us. We can’t see them with our eyes.

As one molecule is heated it begins to move quickly.

When it does it passes some of its heat energy to other molecules around it.

When this happens, all the molecules of an object move heat from one to another, until they are all hot.

Hot All Over!

Some materials (objects) get warmer faster than others.

Metal is a good conductor because it takes heat in quickly.

Copper becomes hot quickly, so it is a conductor.

What things get hot fast?

Other things like wood, plastics, and cotton are not good conductors of heat energy.

These are called insulators.

You’re No Good!

Some colors are good conductors of heat!

Black, navy blue, and other dark colors take in heat quickly.

Color Conductors!

Have you ever noticed how quickly you get hot when you are wearing a black t-shirt on a summer day?

It’s Getting Hot In Here!

Wearing white or light colored clothing outside helps you stay cool on hot days!

Cool Colors?

On a hot summer day: Would a white or black car be hotter?

black?If you did, you are right!

Did you choose…

When heat moves through objects it is called conduction!

Remember….

Plastic, wood, and cotton are insulators!They do not let heat in quickly!

These things are insulators.

Insulators

The color black takes in heat faster than cooler colors like white!

On a hot day, wear a white shirt and chill out!

Stay Cool Dude!

Great job! Thanks for coming today!

Bibliography:

• Georgia Performance Standards-(3rd Grade Science) • K12 Science Curriculum• Microsoft Office Images• www.studyisland.com