MULTIPLE CHOICE, Choose the one alternative that best completes the statement or

Question

MULTIPLE CHOICE, Choose the one alternative that best completes the statement or answers the question. 1) Suppos you view the solar syeaem from high bove Eat's North Pale Which of the folloving3) statements about planetary orbits will be true? A) The inner planets orbit the Sun clockwise while the outer planets orbit the Sun counterclockwise B) The inner planets orbit the Sun counterclockwise while the outer planets orbit the Sun clockwise C) All the planets orbit counterdlockwise around the Sun. D) All the planets except Uranus orbit the Sun counterclockwise Uranus orbits in the opposite direction 34) The terrestrial planets in our solar system are: 34) A) Mercury, Venus, Earth, Mars, and Pluto B) Jupiter, Saturn, Uranus, and Neptune C) Mercury, Venus, Earth, and Mars. D) Jupiter, Satun, Uranus, Neptune, Pluto, and Eris 35) The jovian planets in our solar system are A) Mercury, Venus, Earth, and Mars B) Jupiter, Satum, Uranus, Neptune, Pluto, and Eris C) lo, Europa, Ganymede, and Callisto. D) Jupiter, Satum, Uranus, and Neptune. 36) When we say that jovian planets contain significant amounts of hydrogm compounds we mean all the following chemicals except A) ammonia B) carbon dioxide C) water D) methane 37) What is the Kuiper belt? 37) A) the most prominent ring of Satum that is visible in photographs B) a region of the solar system beginning just beyond the orbit of Neptune that contains many icy comets C) a technical name for the asteroid belt D) a region of the solar system that extends almost a fourth of the way to the nearest stars and contains a trillion comets with orbits going in all directions around the Surn 38) What is the Oort cloud? 35) A) It is not really a cloud at all, but rather refers to the trillion or so comets thought to orbit the Sun at great distances. B) It is a giant storm in the atmosphere of Saturn C) It is a great cloud of gas that resides far beyond the orbit of Pluto. D) It is another name for the cloud of gas from which our solar system was born 39) 39) Which of the following statements about our Sun is not true? A) The Sun's diameter is about 5 times that of Earth. B) The Sun is a star. C)The Sun contains more than 99% of all the mass in our solar system. D) The Sun is made mostly of hydrogen and helium

Explanation / Answer

33. Every planet in our solar system except for Venus and Uranus rotates counter-clockwise as seen from above the North Pole; that is to say, from west to east. This is the same direction in which all the planets orbit the sun. Therefore, the answer is "D".

34. A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. Therefore, the answer is "C".

35. Giant planets are also sometimes called jovian planets, after Jupiter. They are also sometimes known as gas giants. Within the Solar System, four Jovian planets exist – Jupiter, Saturn, Uranus and Neptune. Therefore, the answer is "D".

36. The cores of all four jovian planets are made of some combination of rock, metal and hydrogen compounds. Jupiter and Saturn have similar interiors, with layers extending outward of metallic hydrogen, liquid hydrogen, gaseous hydrogen, and topped with a layer of visible clouds. However, the conditions does not support for 'water'. Therefore, the correct option is "C".

37. The Kuiper Belt is a disc-shaped region of icy bodies - including dwarf planets such as Pluto - and comets beyond the orbit of Neptune. Therefore, the answer is "B".

38. The Oort Cloud is believed to be a thick bubble of icy debris that surrounds our solar system. This distant cloud may extend a third of the way from our sun to the next star -- between 5,000 and 100,000 astronomical units. Therefore, the answer is "A".

39. The Sun has a diameter of about 1,392,000 km (~865,000 miles). Earth's diameter is 12,742 km (7,917.5 miles). The diameter of the Sun is thus 109 times as great as the Earth's diameter. Therefore, the answer is "A".

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