1. Warm up: what is conduction? Record an example in your notebook. Activity 60: Ice Preserving Contest

2. Your Energy Conversions Gizmo is due today, including the online questions. Activity 58 UC assessment is due tomorrow before school starts! Gizmo and UC Assessment

3. Our next quiz is going to be on Thursday. You are allowed to make notes on one side of a 3x5 notecard. The quiz is on Activities 58-60. Next Quiz

4. Please open your books to page D39. Activity 60: Ice-Preserving Contest

5. Insulators- materials that are poor conductors and slow down the rate of energy movement. Activity 60: Ice-Preserving Contest

6. With your teammates, design a container that can keep ice frozen for 20 minutes. ◦ You can use any approved materials that you brought but they must be able to fit inside a drink carton. What should be the control for this contest? Activity 60: Ice-Preserving Contest

7. Contest rules: ◦ Your ice cube must remain in the bag until the end of the contest. ◦ Broken bags means you are disqualified. ◦ Keep all water in plastic bag for measuring later. ◦ If any water leaks, you are disqualified. ◦ As soon as time is up, remove the bag and ice and measure your water in the graduated cylinder. Activity 60: Ice-Preserving Contest

8. Conduction : when thermal or heat energy is transferred from hot to cold because the two objects are touching. Methods of Thermal Energy Transfers: Conduction

9. Convection : when particles with a lot of heat energy move and take the place of particles with less heat energy ◦ Only occurs in liquids and gases since they can move freely. ◦ Convection current: when liquids or gases have a pattern of heating, rising, cooling, and sinking. Methods of Thermal Energy Transfers: Convection

10. Radiation : transfer of thermal energy by electromagnetic waves rather than movement of particles Methods of Thermal Energy Transfers: Radiation

11. Conduction, convection, and radiation. Twig Video

12. What did you do to decrease the rate at which your ice melted? How can an insulator or a conductor help make a house more energy efficient? Activity 60: Ice-Preserving Contest

13. Your Activity 58 UC assessment is due tomorrow ! Study and prepare a notecard for the quiz on Thursday. Tonight’s Homework