For more than a decade, scientists have warned that cars ad factories spew so many gases into the atmosphere that Earth could soon be affected by disastrous climatic changes.  The loss of rain forests in reducing the number of trees to offset the large increases in carbon dioxide in our atmosphere.  The possible consequences are so frightening that it makes sense to slow the buildup of CO2 through preventive measures, such as encouraging energy conservation, developing alternatives to fossil fuels, and preventing the destruction of the rain forests.

ANALYZE PROBLEM

• Create a graph of the data from your experiments.  Let the vertical axis represent the changes in temperature.  Let the horizontal axis represent the distances between the lamp and the thermometer.  Use different colors to indicate the control experiment and the greenhouse experiment.
• Analyze the problem and write a summary about the relationship between the temperature and the distance between the thermometer and the lamp.  Describe this relationship as a function, and justify your reasoning.
• Make a chart using the data from page 3Describe the relationship the three planets have in regards to the temperature with CO2, temperature without CO2, and the distance from the sun.
• Draw a conclusion about the relationship between the distance from the sun and the temperature of Venus and Earth with CO2.  Describe this relationship as a function, and justify your reasoning.
• Draw a conclusion about the relationship between the distance from the sun and the temperature of Mars and Earth with CO2.  Describe this relationship as a function, and justify your reasoning.
• Compare these relationships.  How are the relationships similar and different?
• Predict what the temperature of Mars would be if it had the same amount of CO2 that Earth has.  Explain your calculations.
Title this portion of the Investigation "The Greenhouse Effect --  Ending Investigation" and add this section of the investigation to your folder.

 Some scientists predict that by the year 2050, Earth's atmosphere will contain between 500 and 700 pp. of CO2.  Write a one page paper explaining the situation to a group of concerned citizens.  Consider some of the following questions to address in your paper.  Use at least three references and properly document your sources. What factors will cause this increase in CO2? How different is this estimate from the amount of CO2 calculated earlier? In your opinion, what will the approximate average temperature on Earth be at that time? What might occur if the temperature reaches that point?  What are some of the dangers involved?

 CONTENTS: Introduction:  Unit Overview Begin:  Beginning the Investigation Page 2:  Comparing Data Page 3:  Working with Integers & Comparing Data Page 4:  Charts and Graphs Page 5:  Working with Formulas End:  Closing the Investigation Quiz:  Greenhouse Investigation Quiz

These pages were developed through GirlTECH , a teacher-training program sponsored by the Center for Excellence in Education (CEEE) with support from the National Science Foundation through EOT-PACI.