I need help on this lab http://phet.colorado.edu/en/simulation/greenhouse

LAB #23: GREENHOUSE LAB N AME: active: To describe how the \"greenhouse effect\" affects temperature on the earth and to use [1 0 Obj evidence to support \"hether the \"greenhouse effect\" is good or bad for the earth. \"hottest" topic in today's headlines. The cause of the change the \"greenhouse effect" or \"greenhouse gases." The Introduction: Climate change is perhaps the the \"greenhouse effect" works in a greenhouse. You (oen increasing temperature) is usually blamed on following simulation will allow you to rst examine how will then experiment with a simulation of the earth's atmosphere where the concentration of greenhouse gases can be varied. Finally, you will use the results of the two simulations to describe how the \"greenhouse effect\" affects temperature on the earth and discuss whether the \"greenhouse effect\" is good or bad for the earth. a car feel so much warmer than its surroundings on sunny Pre lab question: Why does the inside of days? \"the greenhouse effect simulation\" or Google PhET. Select simulations, earth science, and - Go to httpzllgheteolorado.edu/en/simulation/greenhouse Part I: A Greenhouse Simulation Select the \"Glass Layers\" tab. Uncheck the \"View all photonS\" box- 1) What do the yellow stars represent? 2) What do the red stars represent? sent forms of energy in the form of photons: the yellow are visible - Both the yellow and red stars repre light, the red are infared. Increase the number of glass panes and ll out the table below: Path/Behavior of Infared Photons Path of Sunlight Photons (Start/EmDirection of (Start/End/Direction/Change in Direction?) Number of Temperature Glass Panes ons do when they hit glass panes from the bottom? More than one 4) What do the infrared phot thing happens. Be specic and discuss both. tions of the photons and knowing that a photon has energy, what happens to 5) Based on the observa the temperature as additional glass panes are added