Unformatted text preview: like Earth except it had not water on the surface. What could you say about its climate? C. It would be hotter, since its atmosphere would have more greenhouse gases. (Why? rain wouldn't be dissolving CO2 and taking it out of the atmosphere; oceans wouldn't be sequestering and dissolving CO2 out of the atmosphere.) Clicker Question #4: Suppose that when Earth formed it turned out to be half the size/mass it is now, but still 1 AU from the Sun. How might have out planet turned out? B. There would be no plate tectonics, no volcanism now....
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- Fall '08
- Astronomy, #, Planet, Clicker question