{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

3704FEK_F10 - ESC3704 Name 85 points December 3 2010 18...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 ESC3704 Name 85 points December 3, 2010 18 students took exam - Numbers to the left of the question number in red are the number of incorrect responses. Instructor comments are in blue . Florida Atlantic University Environmental Issues in Atmospheric and Earth Science Final Examination Key True-False - Print the letter T or F in the blank to indicate if each of the following statements is true or false. Illegible answers are wrong. (1 point each) 0 T 1. Clouds interact with both visible and infrared radiation. Depending upon the type of interaction, they may either cool the planet (negative feedback) or warm the planet (positive feedback). 1 F 2. When the electric field of visible light excites vibrations in water molecules, the molecules re- radiate the light at the same frequency, mostly in a direction similar to the direction of the incoming radiation. The process is called absorption. 1 T 3. Water will form droplets much more readily if there are cloud condensation nuclei in the air to which vapor molecules can attach themselves, than if the air is relatively free of particles. 11 F 4. Warm, low-level clouds have more water vapor than cold clouds, and therefore the warm clouds have a higher albedo. 5 T 5. Using the GISS global climate model, changes in low- and high-level clouds mostly cancelled each other out, so the net global effect of the clouds did not differ very much in the warmer climate scenario from that in today's climate. This is contrary to 1990's thinking, when it was thought that brighter clouds caused by climate change would cool the planet, and help save us from global warming. 0 T 6. Cirrus clouds may be created by jet contrails. 5 T 7. The smoke emitted by ships has been shown to form chains of clouds in areas where the air is clean. 5 T 8. Marine deserts, characterized by low biological productivity, are large generators of dimethyl sulfide.
Image of page 1

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

View Full Document Right Arrow Icon