Lesson plan for The Greenhouse Effect
[Pages:1]Lesson plan for The Greenhouse Effect :
Learning Goals: Students will be able to Compare and contrast "light photons" and "infrared photons". Identify what happens to light photons when they get to Earth and why the temperature of the earth and its atmosphere changes. Design experiments to observe how clouds change the photons behavior Design experiments to observe how greenhouse gases change the photons behavior Compare and contrast cloud behavior and greenhouse gas behavior. Use the Photon Absorption tab to identify if molecules are Greenhouse Gases and give the microscopic evidence that supports your ideas. Explain why inside a building or car sometimes is a different temperature than outside.
Extension: Discover when the "Ice Age" was and what was has changed about the composition of the greenhouse gases.
Background: My students are in a regular chemistry course and most have not had physics. They were introduced to the photon representation for light in an activity Models of the Hydrogen Atom after which I used Neon Lights and Other Discharge Lamps as part of the post lab discussion. We did this activity as part of a unit about covalent compounds where they had built models of several compounds.
The Greenhouse Effect Introduction: I did not demonstrate anything about how to use the sim. There is no PhET Teacher Tips for this sim. I had my students start with investigating what clouds do and then relate how greenhouse gases act. My students in general had no problems except for a few students. I encouraged them to move the slider on amount of gas to "lots" and then had them describe their observations. I was happy to see that students were able to make good observations and conclusions on the Photon Absorption tab.
Lesson: My students mostly worked in pairs. This was an activity that followed a test on Covalent Compounds. We have 95 minute blocks, so I often have a PhET activity to do that relates to the test unit or helps introduce the next unit.
12/10/2012 Loeblein
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