B.Dr. Alley may get a sunburned nose, and the equator is hotter than the pole on the real Earth, primarily because the equator is so much closer to the sun than the pole is.C.Dr. Alley may get a sunburned nose, and the equator is hotter than the pole on the real Earth, primarily because the sun hits the equator directly but the sun hits the pole a glancing blow.D.Dr. Alley is undoubtedly the sexiest human being on Earth.E.Dr. Alley may get a sunburned nose, and the equator is hotter than the pole on the real Earth,
primarily because most volcanoes are located near the equator, forced there by the centrifugalforce of Earth’s rotation, and Dr. Alley exhales hot air from his equatorial nose.GGeometry is the main control on equatorial heating. Although the equator is closer to the sun than the pole, the difference is tiny (about 4000 miles, with the distance from the sun to the Earth about 93 million miles, or about 0.004%) and matters little to the temperature difference between equator and pole (about 0.01oF, based on simple radiative equilibrium). The rotation of the Earth causes winds to turn as they blow over the surface, but does not heat the air. There is no clustering of volcanoes at the equator, and the heat from volcanoes is tiny compared to the heat from the sun. And we are quite confident that several celebrities and politicians believe that they are the world’s sexiest human being, so Dr. Alley’s standing cannot be “undoubtedly” claimed.Points Earned:1/1Your Response:C 4.As water from rain soaks through the soil, the water typically: A.Loses carbon dioxide (CO2) to plant roots, becoming more basic.B.Gains carbon dioxide (CO2) from the soil, becoming more acidic.C.Neither gains nor loses carbon dioxide (CO2).D.Gains humic compounds from the air, becoming a strong base.E.None of the other choices here is even close to being correct.CO2 is fairly soluble in water. Lots of things living in the soil emit carbon dioxide, and soils contain a lot of carbon dioxide that helps make water acidic. Humic compounds are picked up from soil by water, and make the water more acidic.Points Earned:1/1Your Response:B
You've reached the end of your free preview.
Want to read all 195 pages?
- Fall '08
- Earthquakes, rocks, Outer core, Death Valley