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    Phet Contribution 4110 7478

    Uploaded by

    Charley Ray Taylor
    This document describes an online greenhouse effect simulation. It guides the user through several steps: observing the effect of sunlight and infrared photons with no greenhouse gases, then with greenhouse gases; comparing greenhouse gas concentrations and temperatures over time periods from the Ice Age to today; and observing the temperature effect of adding glass panels, which trap infrared radiation like greenhouse gases. The simulation shows greenhouse gases trapping more infrared photons, raising temperatures, and greenhouse gas levels increasing from the Ice Age to present day in line with rising temperatures.

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    Phet Contribution 4110 7478

    Uploaded by

    Charley Ray Taylor
    103 views2 pages
    This document describes an online greenhouse effect simulation. It guides the user through several steps: observing the effect of sunlight and infrared photons with no greenhouse gases, then with greenhouse gases; comparing greenhouse gas concentrations and temperatures over time periods from the Ice Age to today; and observing the temperature effect of adding glass panels, which trap infrared radiation like greenhouse gases. The simulation shows greenhouse gases trapping more infrared photons, raising temperatures, and greenhouse gas levels increasing from the Ice Age to present day in line with rising temperatures.

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    This document describes an online greenhouse effect simulation. It guides the user through several steps: observing the effect of sunlight and infrared photons with no greenhouse gases, then with greenhouse gases; comparing greenhouse gas concentrations and temperatures over time periods from the Ice Age to today; and observing the temperature effect of adding glass panels, which trap infrared radiation like greenhouse gases. The simulation shows greenhouse gases trapping more infrared photons, raising temperatures, and greenhouse gas levels increasing from the Ice Age to present day in line with rising temperatures.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    103 views2 pages

    Phet Contribution 4110 7478

    Uploaded by

    Charley Ray Taylor
    This document describes an online greenhouse effect simulation. It guides the user through several steps: observing the effect of sunlight and infrared photons with no greenhouse gases, then with greenhouse gases; comparing greenhouse gas concentrations and temperatures over time periods from the Ice Age to today; and observing the temperature effect of adding glass panels, which trap infrared radiation like greenhouse gases. The simulation shows greenhouse gases trapping more infrared photons, raising temperatures, and greenhouse gas levels increasing from the Ice Age to present day in line with rising temperatures.

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    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
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    Name ___________________________________ Period ________________ Date ________________

    Greenhouse Effect Online Lab


    (http://phet.colorado.edu/en/simulation/greenhouse
    Greenhouse Gases: Key:
    Carbon Dioxide (CO2) Yellow Photon = Sunlight (Sun’s Radiation)
    Methane (CH4) Red Photon = Infrared Radiation (Heat Radiation)
    Nitrous oxide (N2O)
    Chlorofluorocarbons (CFCs)
    Ozone (O3)
    Atmospheric water vapor (H2O)

    Step 1: On GREENHOUSE EFFECT tab, set greenhouse gas concentration to NONE. Observe the sunlight
    photons and infrared photons.

    a. What happens to sunlight photons?

    b. What happens to the infrared photons?

    c. What is the temperature reading?

    d. Add 3 clouds. How does the activity of the infrared photons change?

    e. How does the activity of the sunlight photons change?

    f. What is the temperature reading after adding 3 clouds? How was temperature affected by the clouds?

    Step 2: Set cloud count back to zero and set greenhouse gas concentration to LOTS. Observe the sunlight
    photons and infrared photons.

    a. What happens to the sunlight photons?

    http://phet.colorado.edu
    b. What happens to the infrared photons?

    c. What is the temperature reading? How does the temperature compare to when there was no
    greenhouse gases in the atmosphere?

    Step 3: Select the ice age, 1750’s, and today tabs and record the changes in greenhouse gases and temperature.
    Greenhouse
    Carbon Dioxide Methane Nitrous Oxide
    Gas Temperature
    Concentration (CO2) Concentration (CO4) Concentration (N2O)
    Concentration

    Ice Age

    1750

    Today

    a. Have greenhouse gas concentrations increased or decreased since 1750?

    b. What happens to temperature as greenhouse gas concentration increases?

    Step 4: Go to GLASS tab.

    a. Record temperature.

    b. Add 3 glass panels. Record temperature again.

    c. What effect do glass panels have on temperature?

    d. What effect do glass panels have on the infrared photons?

    e. If glass panels help trap heat, how could they be used to help a farmer keep his plants warm in a cooler
    climate?

    http://phet.colorado.edu

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