Heat Conducting Materials 3rd grade - PowerPoint PPT Presentation

1 / 21
About This Presentation
Title:

Heat Conducting Materials 3rd grade

Description:

Heat Conducting Materials 3rd grade SPI 0307.10.2 Classify materials according to their ability to conduct heat. That s hot! Many things give off heat. – PowerPoint PPT presentation

Number of Views:383
Avg rating:3.0/5.0
Slides: 22
Provided by: s020
Category:

less

Transcript and Presenter's Notes

Title: Heat Conducting Materials 3rd grade


1
Heat Conducting Materials3rd grade
  • SPI 0307.10.2 Classify materials according to
    their ability to conduct heat.

2
Thats hot!
  • Many things give off heat.
  • Heat is sometimes very hot!
  • All heat is energy.

fire
Sun
electricity
3
Campfire!
  • Pretend you are at a campfire. You are 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.

4
Ouch!
  • If you leave the hanger in the fire for a long
    time, the whole hanger will become to hot to
    touch!
  • Why does this happen?

5
Heres the reason.
  • This happens 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.

6
Heat on the move!
  • Heat can move from one object to another, or from
    one molecule to another through the process of
    conduction.

7
What is a molecule?
A molecule is like a tiny building block that
makes up everything around us. We cant see them
with our eyes.
8
Hot All Over!
  • 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.

9
What things get hot fast?
  • 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.

Copper pots
10
Youre no good!
  • Other things like wood, plastics, and cotton are
    not good conductors of heat energy.
  • These are called insulators.

11
Color conductors!
  • Some colors are good conductors of heat!
  • Black, navy blue, and other dark colors take in
    heat quickly.

12
Its getting hot in here!
  • Have you ever noticed how quickly you get hot
    when you are wearing a black t-shirt on a summer
    day?

13
Cool colors?!
  • Wearing white or light colored clothing outside
    helps you stay cool on hot days!

14
HONK! HONK! BEEP! BEEP!
  • Would a white car or black car on a summer day be
    hotter?

Which do you think would be hotter to touch?
15
Did you choose
  • black?
  • If you did, you are right!

16
Which would you choose?
On a hot day, which side of the shirt would keep
you cool?
17
If you chose..
white
you are right!
18
Remember.
  • Heat moves through objects.
  • This is called conduction!

19
Conductors
  • Some things hold heat in faster than others.
  • Metal and copper are conductors.

20
Insulators
  • Plastic, wood, and cotton are insulators!
  • They do not let heat in quickly!
  • These things are insulators.

21
Stay cool dude!
  • The color black takes in heat faster than cooler
    colors like white!
  • On a hot day, wear a white shirt and chill out!
Write a Comment
User Comments (0)
About PowerShow.com