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Chemistry 2010 Homework 4: Climate Change and Energy and Ozone
1. What is a greenhouse gas? Give three examples
Greenhouse gases are those gases that absorb Infrared radiation from the Sun
and, radiate heat as a result. In earth’s atmosphere, Greenhouse gases absorb
IR from the sun and release it. A part of heat radiated by greenhouse gases
reaches the earth in addition to the heat from the Sun after penetrating the
earth’s atmosphere, leading to absorption by the earth and to release into
atmosphere subsequently. A part of heat released by the earth is reabsorbed by
greenhouse gases; thus, a cycle perpetuates. Examples of Greenhouse gases
are carbon dioxide, nitrous oxide, ozone methane and water vapor.
2. What type of electromagnetic radiation is most responsible for global
Infrared electromagnetic radiation is most responsible for global warming.
3. What two processes have caused the amounts of CO2 to increase in the
atmosphere over the last 100 years?
Deforestation: Trees are instrumental in absorbing and removing CO2
emissions from the air. Cutting trees leads to increase of CO2 in the
atmosphere for the fact that absorbing vegetation is reduced.
Transportation: Across the world, transportation is one of the largest
sources of increased CO2 in the atmosphere. With the increase of
locomotive in the world, the exponential increase in CO2 r...