1. 61 Mixing Hot and Cool Water

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3. 61 Mixing Hot and Cool Water Key Vocabulary conduction heat insulation temperature

4. 61 Mixing Hot and Cool Water What is the difference between heat and temperature? Record your ideas in your notebook.

5. 61 Mixing Hot and Cool Water Read the introduction and look for key ideas

6. 61 Mixing Hot and Cool Water What happens to the energy when hot and cool water are mixed?

7. 61 Mixing Hot and Cool Water Complete procedure steps 1-2

8. 61 Mixing Hot and Cool Water Complete procedure steps 3-8

9. 61 Mixing Hot and Cool Water Do your results support the Law of Conservation of Energy? Do your results support the idea that thermal energy is transferred from hot to cold and not the other way around?

10. 61 Mixing Hot and Cool Water In this experiment, how does the process of heating compare to how energy moves in a home? Share your ideas with the class.

11. 61 Mixing Hot and Cool Water Analysis question 1 Were the results what you expected? Compare your and your partner’s predictions to the actual results.

12. 61 Mixing Hot and Cool Water Analysis question 2 When you mixed equal volumes of hot and cool water, how did the final temperature compare to the starting temperatures?

13. 61 Mixing Hot and Cool Water Analysis question 3 When you mixed unequal volumes of hot and cool water, how did the final temperature compare to the starting temperatures?

14. 61 Mixing Hot and Cool Water Analysis question 4 For all the experiments, explain what happened to the thermal energy in the water when the hot and cool water were mixed.

15. 61 Mixing Hot and Cool Water Analysis question 5 In any of the experiments, would it have been possible for the final temperature to be greater than the initial temperature?

16. 61 Mixing Hot and Cool Water Analysis question 6 Did any energy leave the cup-and-water system? Describe the evidence that supports your answer.

17. 61 Mixing Hot and Cool Water What happens to the energy when hot and cool water are mixed?

18. 61 Mixing Hot and Cool Water Key vocabulary definitions Conduction – The flow of heat, electricity, or sound through a material. Heat – The movement of thermal energy from hot to cold.

19. 61 Mixing Hot and Cool Water Key vocabulary definitions Insulation – A material that is used to slow down or prevent the flow of heat or electricity through it. Temperature - A measure of molecular motion, generally using a Celsius (°C) or Fahrenheit (°F) scale.

20. 61 Mixing Hot and Cool Water Design Design an experiment to measure the temperature changes of hot and cool water that are not directly mixed, but instead are held next to each other. Use a plastic cup to separate the water, as shown in the diagram below. Before conducting the experiment, predict the temperature of the hot and cold water after a certain amount of time.