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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | Apr 2017 |
| Last Sign in: | 327 Weeks Ago, 5 Days Ago |
| Questions Answered: | 12843 |
| Tutorials Posted: | 12834 |
MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
1. It is thought that Venus once had a habitable global climate that eventually succumbed to a runaway greenhouse effect, which now supports surface temperatures hot enough to melt lead. Can you speculate whether such a scenario could happen to Earth's climate? Why or why not? What mechanisms could prevent such a catastrophe both on short and long time scales?              Â
Â
2. Using the inverse square law, find the solar flux at perihelion (0.983 AU) and at aphelion (1.017 AU). Recall that the solar flux at 1 AU is 1370 Watts/m2. How much higher is the solar flux at perihelion than at aphelion today? How much warmer is the effective radiating temperature of Earth at perihelion than at the aphelion?Â
where σ=5.67*10-8 W/m2K4
Â
3. List out the various eras and epochs in Earth's history in chronological order and mention their time periods.Â
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