Heat Transfer Do Nows

Do Now # 1 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. Label Kinetic and Thermal Energy.

DO NOW # 2 pg. 48 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?

What direction is heat transferred? Do Now # 3 NEW PAGE pg. 51 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 What direction is heat transferred? How is heat transferred between molecules?

A.Explain how heat transfers in each type of heat transfer. Radiation Do Now #4 pg.51 A.Explain how heat transfers in each type of heat transfer. Radiation Conduction Convection. What do the yellow arrows represent in the picture? Explain. What do the red arrows represent? Explain.

Do Now # 5 New Page Pg. 54 Answer the following questions using the data collected during our conduction vs insulator investigation: Which material lost heat at the quickest rate? The slowest rate? Which material is the best for insulating/ keeps heat in? Which material is the best at conducting/letting heat out? Which material would you want to put hot chocolate in? Why? Would the glass of the car be a good insulator or conductor?

A. B. C.

Why are our cooking pans made of metal? Do Now # 6 pg. 54 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?

Do now # 7 New Page pg57 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? Draw a model to show the direction thermal energy is transferred between a hot cup of tea and the outside air.

Lets talk Why does a cold water bottle “sweat” and a warm or room temperature water bottle not “sweat”?

Do Now #8 pg. 57 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? 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

How does a wetsuit work? How does a jacket work? Do Now # 9 New Page 58 How does a wetsuit work? How does a jacket work? If you pick up a cold glass of water which direction is the thermal energy passing? Explain.

Difference between heat and light Heat and light are different but they are both forms of energy. Heat is a form of kinetic energy contained in the random motion of the particles of a material. Light is a form of electromagnetic energy. As with other forms of energy, heat energy can be transformed into light energy and vice versa.

Give examples of insulators. What is a conductor? Do Now # 10 pg. 58 What is an insulator? Give examples of insulators. What is a conductor? Give examples of conductors. If you want something to stay the same temperature would you use an insulator or conductor and why?

Extra do nows can use to study or prepare for test

Do Now # pg.57 A. Which 3 containers had the smallest change in temperature? B. What do those containers have in common? C. Which containers got the warmest? D. What do the containers that got the warmest have in common? E. 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

What boils faster a pot of water with a lid on or off? Why? Do Now #1 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?

A. Why is making tea with hot water easier than cold water? Explain. Do Now # 6 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