WEAX 201 Chapter 1 Exam Review
Questions and Answers 100% Solved
What is the primary source of energy for the Earth's atmosphere? - The
Sun
List the four most abundant gases in today's' atmosphere. - Nitrogen
(N2) - 78.084%
Oxygen (O2) - 20.9476%
Argon (Ar) - 0.934%
Carbon dioxide (CO2) 0.0...
Explain how the atmosphere protects inhabitants at Earth's surface. - ✔✔It
absorbs most of the potentially harmful solar ultraviolet radiation which
would otherwise reach the surface of the earth. This function is performed
primarily by ozone (O3) in the stratosphere.
What are some of the aerosols in our atmosphere? - ✔✔nitrogen dioxide &
carbon monoxide,
Briefly explain the production and natural destruction of carbon dioxide
near Earth's surface. Give two reasons for the increase of carbon dioxide
over the past 100 plus years. - ✔✔• CO2 comes from decay of vegetation,
volcanic eruption, exhalation of animal life, burning of fossil fuels. It is
removed by photosynthesis or absorbed by the oceans.
• It is on the increase due to burning of fossil fuels and deforestation
How has the earth's atmosphere changed over time? - ✔✔The atmosphere
started with mainly hydrogen and helium. As volcanic activity started,
nitrogen, carbon dioxide and sulfur were added. When plant life showed up,
oxygen was added and carbon dioxide and nitrogen were reduced. It
started out as hydrogen and helium which escaped. Volcanoes outgassed
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