EXAM1 Answers - GEO305 Global Warming Spring 2012...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
NAME_Answer Key ___________________________ EXAM 1, 2/13/2012 Please answer to the best of your ability. Good luck! 1. Define greenhouse gas , and identify the most powerful greenhouse gases. Greenhouse gases are gases that trap heat in the atmosphere. CH , CO , H O apor , NO X , O 2. Consider the plot at right from our text. a) What is name of this plot? Keeling Curve b) What is the significance of the saw-toothed nature of the plotted trend? This plot shows the seasonal drawdown of CO in the northern hemisphere during the summer and the rise of CO in the northern hemisphere during the winter. The drawdown of CO is due to the intact of deciduous trees in the spring and summer months. You can see the exponential rise of CO due to the burning of fossil fuels. c) Where would you estimate CO 2 concentration to be in the year 2050, based on the slope of the line shown? 400+ 3. Use the following terms in a sentence each, describing the function of Earth’s climate system: ATMOSPHERE, HYDROSPHERE, CRYOSPHERE, BIOSPHERE, and LITHOSPHERE. The atmosphere contains CO2 which is drawn down by microscopic plants that live in the ocean, which is part of the hydrosphere. The microscopic plants are members of the biosphere and their tests will eventually become part of the lithosphere in the form of chert (siliceous organisms) or limestone (calcareous organisms). The Greenland ice sheet and the Arctic and Antarctic ice sheets are part of the cryosphere and due to plate tectonics, the limestone and chert may one day be buried under the ice. 4. Contrast weather and climate . Weather is current conditions (short term, day to day) Climate is weather over some period of time (long term trends, 10-15 years or even 100,000-200,000 years) 5. What is a feedback in the climate system? Define feedback , and provide an example.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern