Where does the energy come from when a cold drink warms up?
- Do Now– Get out your ISN and add to the Table of Contents- “Collisions Game” p.31 (Right Side). Head p.31 properly with “Collisions Game-11/7/18.″
- Write Pair Share– Some of you noticed that the particles on the simulation were different colors and that when one particle hit another particle, it changed colors. When the simulation began, there were two things with different temperatures. But after a while, temperature changed for both of them, like it was becoming more equal. Let’s think more about what temperature is measuring. Answer the following questions on ISNp.28: Did every particle in the simulations have the same amount of kinetic energy? How could you tell? If the particles in a sample all have different kinetic energy, how can the sample have only one temperature? If water in a cup is all one temperature, what does this mean about the kinetic energy of all the particles in the water? How is temperature our measure for energy?
- Simulation– So a warm temperature means particles have more kinetic energy and cold temperature means less kinetic energy, yet particles in the same temperature water may not have all have the same kinetic energy. Let’s check out another simulation to be sure we get this and further define temperature. This simulation shows one substance, a gas, on a particle level at three different temperatures- hot, cold, and room-temperature. How does this simulation provide evidence for what we know about temperature and particle movement? Add Temperature pages 28-29 to the Index in your ISN.
- Model Tracker– Now that we figured out some interesting things about temperature, let’s update the Model Tracker on ISN pages 18-19 (or continue to pages 20-21). We still need to investigate where this energy that gets into our cup comes from. Any ideas how energy can move from one thing to another?
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- Collisions Game– We figured out that not all particles move at the same speed and temperature is the measure of the average speed or kinetic energy of the particles. We still need to figure out how energy might move between substances. What are some ways? This game will give us a chance to see how particles bumping into each other may transfer energy as the game functions as a model. Complete the Collisions Game: Analogy Map handout before playing. Then, follow the How to Play the Collision Game directions handout. Finally, answer the questions on ISN p.31.