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URANUS A GAS GIANT THE SEVENTH PLANET WHAT IS URANUS? • Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus (Ouranos), the father of Kronos (Saturn) and grandfather of Zeus (Jupiter). many wordsThough it isToo visible to the naked use eye like the five classical planets, it was never recognized as a planet by ancient keywords only. Balance observers because of its dimness slow orbit. Sir with images. Don’t and cram William Herschel announced its discovery on March 13, too much info into one of the Solar 1781, expanding the known boundaries System for slidethe firstmake time inmore modern history. Uranus was slides also the firstinstead. planet discovered with a telescope. STRUCTURE • Like the other gas giants, Uranus is mostly atmosphere, with a rocky core that occupies a small fraction of the total diameter. The dominant atmospheric constituents are hydrogen (83%) and helium (15%), with about 2% methane and small amounts of acetylene and other hydrocarbons. These gases form a deep, relatively clear region overlying a thick, unbroken layer of white cloud made of frozen hydrogen sulfide and ammonia particles, overlaid by a haze of condensed methane. MOONS • Uranus has 27 known moons, all of which are named after characters from the works of William Shakespeare and Alexander Pope. 1. Cordelia 2. Ophelia 3. Bianca 4. Cressida 5. Desdemona 6. Juliet 7. Portia 8. Rosalind 9. Mab 10. Belinda 11. Perdita 12. Puck 13. Cupid 14. Miranda 15. Francisco 16. Ariel 17. Umbriel 18. Titania 19. Oberon 20. Caliban 21. Stephano 22. Trinculo 23. Sycorax 24. Margaret 25. Prospero 26. Setebos 27. Ferdinand CLIMATE • At ultraviolet and visible wavelengths, Uranus's atmosphere is remarkably bland in comparison to the other gas giants, even to Neptune, which it otherwise closely resembles. When Voyager 2 flew by Uranus in 1986, it observed a total of ten cloud features across the entire planet. One proposed explanation for this dearth of features is that Uranus's internal heat appears markedly lower than that of the other giant planets. The lowest temperature recorded in Uranus's tropopause is 49 K, making Uranus the coldest planet in the Solar System, colder than Neptune. INTERNAL STRUCTURE • Uranus's mass is roughly 14.5 times that of the Earth, making it the least massive of the giant planets. Its diameter is slightly larger than Neptune's at roughly four times Earth's. A resulting density of 1.27 g/cm3 makes Uranus the second least dense planet, after Saturn. This value indicates that it is made primarily of various ices, Improve yourand outline so the such as water, ammonia, methane. The total mass of ice in Uranus's not precisely known, as reportinterior flows is smoothly. You different figures emerge depending on the model already discussed chosen; it must be between 9.3 and 13.5 Earth masses. structure in slide 3.only Better Hydrogen and helium constitute a small part of the total, with between 0.5 andsimilar 1.5 Earth masses. The if you group slides remainder of the non-ice mass is accounted for by rocky material. together. THE SIZE COMPARISON BETWEEN EARTH AND URANUS INTERIOR OF URANUS RINGS • Like the other gas planets, Uranus has rings. Like Jupiter's, they are very dark but like Saturn's they are composed of fairly large particles ranging up to 10 meters in diameter in addition to fine dust. There are 13 known rings, all very faint; the brightest is known as the Epsilon ring. The Uranian rings were the first after Saturn's to be discovered. This was of considerable importance since we now know that rings are a common feature of planets, not a peculiarity of Saturn alone. MORE ABOUT URANUS • Uranus is the seventh planet from the Sun and the third largest (by diameter). Uranus is larger in diameter but smaller in mass Please add information on than Neptune. behavior: orbit,km rotational • orbit: 2,870,990,000 from Sun speed, axial tilt, etc. So diameter:far, 51,118 km (equatorial) all you discussed is • mass: 8.683e25 structure.kg ABOUT WILLIAM HERSCHEL November 15, 1738 - August 25, 1822 • FULL NAME: Frederick William Herschel • Born: 15-Nov-1738 Birthplace: Hannover, Hanover, This is better in the Germany beginning when you Died: 25-Aug-1822 Locationmention of death: Slough, you discovered Buckinghamshire, England the planet- just don’t dwell Cause oftoo death: unspecified much on this since it is Remains: St. Laurence notBuried, very important for us. Churchyard, Upton, Berkshire, England WILLIAM HERSCHEL ------END OF PRESENTATION------ Cite your references. Your report is too plain. Make it more exciting with images.