Conservation of Energy at the Skate Park Part A: Thermal Energy Learning Objective: Describe how a change in thermal energy of the system affects the motion of molecules at the microscopic level, and the motion of the skater at the macroscopic level. PhET Friction Simulation:http://phet.colorado.edu/sims/html/friction/latest/friction_en.html PhET Energy Skate Park Simulation: Directions: 1. In the microscopic model boxes, draw and describe the motion of the skater’s molecules at her two different positions. Hint: Think about molecules in the friction simulation. 2. In the macroscopic model boxes, draw and describe the energy of the skater at the two positions. Microscopic Model (Left Image) Microscopic Model (Right Image) Macroscopic Model (Left Image) Macroscopic Model (Right Image) Part B: Energy Changes in the Skate Park System Learning Objectives: 1. Differentiate between total energy and various forms of energy in a system. 2. Explain how each model (bar graph and pie chart) shows the total energy of the system, and draw each model for a situation with a different amounts of initial energy. 3. Describe energy changes in a system over time using both words and graphical representations. Directions: Use the simulation investigate energy in the skate park. Use different tracks on the "Introduction" and "Friction" pages. 1. Describe the system represented by the bar graph and pie chart. Explain your reasoning. System description
Conservation of Energy at the Skate Park Part A: Thermal Energy Learning Objective: Describe how a change in thermal energy of the system affects the motion of molecules at the microscopic level, and the motion of the skater at the macroscopic level. PhET Friction Simulation:http://phet.colorado.edu/sims/html/friction/latest/friction_en.html PhET Energy Skate Park Simulation: Directions: 1. In the microscopic model boxes, draw and describe the motion of the skater’s molecules at her two different positions. Hint: Think about molecules in the friction simulation. 2. In the macroscopic model boxes, draw and describe the energy of the skater at the two positions. Microscopic Model (Left Image) Microscopic Model (Right Image) Macroscopic Model (Left Image) Macroscopic Model (Right Image) Part B: Energy Changes in the Skate Park System Learning Objectives: 1. Differentiate between total energy and various forms of energy in a system. 2. Explain how each model (bar graph and pie chart) shows the total energy of the system, and draw each model for a situation with a different amounts of initial energy. 3. Describe energy changes in a system over time using both words and graphical representations. Directions: Use the simulation investigate energy in the skate park. Use different tracks on the "Introduction" and "Friction" pages. 1. Describe the system represented by the bar graph and pie chart. Explain your reasoning. System description