A greenhouse gas (sometimes abbreviated GHG) is a gas in the atmosphere that absorbs and emits radiation within the thermal infrared range This process is the fundamental cause of the greenhouse effect The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozoneEarth's greenhouse effect is basic to understanding global warming Like many natural processes, this effect is best understood in terms of energy flows For starters, Figure 6 shows the energy flow near the surface of an imaginary Earth that has no greenhouse gases (these are trace gases, mainly water vapor and CO 2 ) but has an otherwiseGreenhouse effect and explore natural and humancaused greenhouse gas emissions and their impacts Students will brainstorm and then research natural and human activities that contribute to greenhouse gas emissions and draw them in a diagram Students then discuss how they can reduce their contributions to greenhouse gas emissions
Iv Using Central Ideas About Light And Thermal Phenomena To Explain The Greenhouse Effect Exploring Physical Phenomena
