1. Heat Transfer
Do Nows

2. What boils faster a pot of water with a lid on or off? Why?
Do Now # Page 48
Why does Mrs. Daggett prefer to park under the shaded parking structure, especially when she has girl scout cookies in her car?
What boils faster a pot of water with a lid on or off? Why?

3. Do Now # pg. 48
A. Why is making tea with hot water easier than cold water? Explain.
B. Create a model to show the difference between the air molecules in a room that is 85°F vs. 65°F.

4. DO NOW # pg. 25
Yesterday we did a calorimeter lab. Think about the lab and write down everything you noticed and everything you wondered about the lab.
What did you notice about the calorimeter lab?
What did you wonder about the calorimeter lab?

5. Do Now # pg. 25
Do you think a bottle of water sitting on the desk has Kinetic Energy? Explain
Do you think a bottle of water sitting on the desk has Thermal Energy? Explain

6. A.What direction is heat transferred?
Do Now # pg. 32
A.What direction is heat transferred?
B.How is heat transferred between molecules?
C.Explain which would keep you warmer on a cold night:
– A lighter weight sleeping bag that is tight around your body
–A heavy weight sleeping bag that is extra wide?

7. A. Why is making tea with hot water easier than cold water? Explain.
Do Now # Pg. 32
A. Why is making tea with hot water easier than cold water? Explain.
B. If a cup of coffee at 85 degrees is left in a room at 75 degrees what would the temp of the coffee be in 5 hrs? Explain

8. Explain how heat transfers in each type of heat transfer. Radiation
Do Now # pg. 35
On a hot summer day would you prefer to slide down a metal slide or a plastic slide? Why or why not?
Explain how heat transfers in each type of heat transfer.
Radiation
Conduction
Convection.

9. Why are our cooking pans made of metal?
Do Now # pg. 35
If a material has a lot of molecules packed close together would it be a better conductor or insulator? Why?
If you want to keep something hot or cold should you use an insulator or a conductor? Why?
Why are our cooking pans made of metal?

10. Do Now # pg. 38
A. Which 3 containers had the smallest change in temperature?
B. What do those containers have in common?
C. Which 4 containers got the warmest?
D. What do the containers that got the warmest have in common?
E. Does the glass jar need to be closed to “trap the air” inside? How do you know?

11. Do now # 10 pg 38 Draw and explain a diagram showing heat transfer.
What is Kinetic energy? Draw a picture showing a molecule with more kinetic energy and one with less kinetic energy?
What is thermal energy? Does hot water or cold water have more thermal energy?
When is the test?