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Heat Transfer

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by

Vandana Sharma

on 10 February 2016

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Transcript of Heat Transfer

Heat Transfer
Our atmosphere, our Earth and our oceans are all heated by the Sun. This heat from the Sun moves throughout our atmosphere and oceans and is the basis for our weather.
There are three ways heat can transfer from one place to another. Let's investigate each. Use these guiding questions:
1. What are the 3 types of heat transfer?
2. How are they similar?
3. How are they different?
Heat Transfer - type 1
1. Each of the following images show heat transferring from one place to another.
2. Look at each image and make a list of what each have in common in regards to heat transferring.
3. What do you think is happening? How is the heat transferring (moving) in each of these images?
Heat Transfer - type 2
1. Each of the following images show heat transferring from one place to another.
2. Look at each image and make a list of what each have in common in regards to heat transferring.
3. What do you think is happening? How is the heat transferring (moving) in each of these images?
Heat Transfer - type 3
1. Each of the following images show heat transferring from one place to another.
2. Look at each image and make a list of what each have in common in regards to heat transferring.
3. What do you think is happening? How is the heat transferring (moving) in each of these images?
** Here is a
HINT
: In all three images, the red arrows represent warm molecules and the blue represent cool molecules.**
Actual similarities
Heat is transferring from one object to another without touching.
The heat source does not have to touch the object to heat it.
The heat is traveling in waves.
This Type is Called:
radiation
Actual similarities
Heat is transferring from one object to another by directly touching.
The heat source DOES need to touch some sort of matter in order to transfer.
This type of heat transfer can not move without matter.
This Type is Called:
conduction
Actual similarities
Warm air or water is moving upward (rising).
Cool air or water is moving downward (sinking).
Heat energy is moving by liquid or gas molecules moving in a circular motion (a current).
This Type is Called:
convection
Air Molecules
TOUCHING Earth'surface
Air Molecules

Earth's Surface

A Little more...
Bill Nye explains two examples of radiation; what are those two examples?
radiation
conduction
Use the flasks below to lightly shade in the colors that you observe.
RED = WARM
BLUE = COOL
convection
Chapter 2:
http://safari.lcps.org/?a=49441&ch=2&d=00293AA
Chapter 7
2nd Clip:

http://safari.lcps.org/?a=49441&s=00:11:32:03&e=00:12:22:13&d=00293AA
1.


2.
Bill Nye - Heat
Using the images below, draw arrows to point to all of the locations where conduction is occuring.
What would happen now if we put #1 on top of a hot plate?
Let's Apply what we've learned...
1. How can Earth get heated?
Draw how you think this happens...
2. Now that the ground is warm, besides radiation, what's another way air can get warm?
Explain.
Now draw what you explained...
3. Now that the air (air molecules) is warm, what will it do?
Draw what will happen...
Radiation
Conduction
Convection
1.
2.
cool
cool
warm
warm
Heat on Earth
Full transcript