Ch12 - Assignment Chapter 12 Class Astronomy I Date October 8th 2007 Review Questions 1 Even though Mars passes closer to the Earth than Jupiter

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Class: Astronomy I Date: October 8 th , 2007 Review Questions 1. Even though Mars passes closer to the Earth than Jupiter does, Mars has a very elongated orbit that makes it seem different at various oppositions while Jupiter has a nearly circular orbit. 2. We could infer that Saturn is the most distant of the planets visible without a telescope because when viewed through naked-eye observations, Saturn’s long orbit is indicated by small change in position on the celestial sphere over nights and days. 3. As seen on Earth, both Jupiter and Saturn appear to be in retrograde motions more frequently because their orbits are so much larger and therefore longer than that of the Earth. 4. The Jupiter’s dynamic atmosphere is a lot like the motion of water stirred in a pot in that its wind flows in directions like stirred water. However, Jupiter’s atmosphere shows major changes in the planet’s atmosphere throughout time and it creates winds and turbulent air all over the planet. 5. Jupiter’s internal composition and that of atmosphere are overall similar. It contains mostly hydrogen molecules, some helium, and small amounts of other substances like methane, ammonia, water vapor, and other gases. 6. The evidence for hydrogen and helium in Jupiter’s atmosphere was slow in coming. This was mainly because the ultraviolet spectral lines that astronomers needed to observe mostly would not penetrate through the Earth’s atmosphere to reach the eyes of astronomers. The presence of hydrogen and helium was confirmed when spacecraft first flew past these planets and measured the spectra in detail. 7. Because Saturn in size is smaller than Jupiter, Saturn probably cooled more rapidly. This cooling triggered increase of precipitation, rain. Saturn’s most of helium has fallen farther down into the planet. 8. Jupiter’s hydrogen and helium rich atmosphere creates such unimaginably high levels of pressure that any spacecraft would be crushed. This is because hydrogen and helium would never solidify into a surface on which the spacecraft could touch down. 9. As seen through Earth-based telescopes, Jupiter and Saturn display colorful bands that extend around each planet parallel to its equator. The dark, reddish bands are called belts, and the light-colored bands are called zones. Saturn also shows similar features, but they are much fainter for it is farther away from the Earth. The Great Red Spot is more of a belt because of its dark red-orange color. 10. Weather patterns on the Earth tend to change character and eventually dissipate when they move between plains and mountains or between land and sea. But since there is no solid surface or ocean in Jupiter, no such changes can occur for the Great Red Spot. Last Name: Sung
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This note was uploaded on 08/25/2008 for the course ASTRON 1 taught by Professor Jsepikas during the Winter '07 term at Pasadena City College.

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Ch12 - Assignment Chapter 12 Class Astronomy I Date October 8th 2007 Review Questions 1 Even though Mars passes closer to the Earth than Jupiter

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