1. How It Happens and the Different Types
Heat Transfer
How It Happens and the Different Types

2. What happens to the temperature if I add ice cubes to a glass of soda?
Write your answer down in your notes.
Soda!
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3. Answer? How many of you wrote that the ice cubes make the soda cold?
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4. Wrong! What if I told you that ice cubes do not make soda cold?
In fact, it is the soda that warms up the ice cube!
Wrong!
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5. Slide 5

6. Slide 6

7. When will the heat transfer between the soda and the ice cubes stop
When will the heat transfer between the soda and the ice cubes stop? Why?
Write your answer down in your notes.
Predict
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8. Answer How many of you wrote, “When the ice has finished melting?”
Please share your answers.
Answer
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9. When the ice has finished melting, the temperature has increased.
When the ice was added to the soda, the temperature of the soda decreased.
The ice continued to melt until the soda and the ice reached the same temperature.
This is because heat transfer continues until both objects have reached the same temperature.
When the two objects have reached the same temperature, this is called Thermodynamic Equilibrium.
Equilibrium

10. Equilibrium

11. Predictions. In your notes, number a set of lines 1-5.
You will be shown a series of pictures. The pictures will show objects between which heat transfer will occur.
On your paper, draw an arrow showing which direction the heat will transfer in.
Predictions.

12. Image Source: http://pixabay.com/p-159904/?no_redirect
Cool Air
Warm Skin #1

13.  #1 Answer Cool Air Warm Skin
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Cool Air
Warm Skin
#1 Answer
Since the skin has a higher temperature than the air, the skin transfers heat to the air around it, making itself cooler.

14. Image Source: http://upload. wikimedia
Lava
Mountain #2

15.  #2 Answer Lava Mountain
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Lava
Mountain
Since the lava has a much higher temperature than the mountain, it transfers heat to the mountain wherever the two make contact.
#2 Answer

16. #3 Student Chair Image Source: http://pixabay.com/p-29492/?no_redirect

17.  #3 Answer Student Chair
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Student
Chair
The typical human body is around 98.6 degrees Fahrenheit, whereas a chair is usually room temperature, 75 degrees Fahrenheit. When the two come into contact, heat transfers from the student to the chair. That’s why the chair feels cool.
#3 Answer

18. #4 Apollo the Lizard The Sun
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Image Source: Erika Trnka
Apollo the Lizard
The Sun #4

19.  #4 Answer Apollo the Lizard The Sun
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Image Source: Erika Trnka
Apollo the Lizard
The Sun
Heat will transfer from the Sun to the lizard. There is nothing on Earth hotter than the Sun, and besides: lizards are exothermic!
Exothermic: getting body heat from an outside source
#4 Answer

20. #5 Light Bulb Air in a room
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Light Bulb
Air in a room #5

21.  #5 Answer Light Bulb Air in a room
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Light Bulb
Air in a room
When a light bulb gives off light, it also gives off heat. This heat warms up the surrounding air. If you place your hand near a light bulb (don’t touch!), you will feel the heat.
#5 Answer

22. Step 1: Partner A looks at question one and shares the answer with partner B.
Step 2: Partner B either approves of the answer, or guides partner A to the correct answer.
Step 3: Once an answer is agreed upon, Partner A asks, "May I write it down?"
Step 4: Partner B either agrees or provides further coaching until a correct answer is agreed upon.
Step 5: Partner A picks up the writing utensil and writes down the answer. Then Partner A hands the writing utensil to Partner B, and the steps repeat.
If these instructions are not followed, you will complete the work by yourself.
Rally Coach