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Main Curriculum Tie:
Background For Teachers:
Greenhouse gases allow the Sun's light to pass through them to the surface of Earth, but they also absorb some of the infrared radiation from Earth's surface. This creates an effect similar to that in a greenhouse. Gases, like glass in a greenhouse, help trap heat and keep it from escaping. There is concern over whether increases in these gases are contributing to global warming. The first step in investigating this is to determine whether amounts of greenhouse gases in the atmosphere have been increasing.
Discuss the role of data analysis in scientific research. How do choices in displaying data, for example as tables of data or as graphs, affect communication?
Can graphs be misleading by changing the x-axis and y-axis number increments?
Discuss with your students the types of changes that can be made to reduce CO2 emissions. What is their county, state, or country doing (if anything) to help? Have the students ask older family members or friends about the impact that reducing CFCs has had on their daily lives. Do they feel changing their lifestyle or spending habits to help reduce CO2 is worthwhile?
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