21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 7.4, Problem 7.4CYU
To determine
Select the correct option of explanation for the origin of a rocky, terrestrial planet beyond the orbit of Neptune.
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Earth-based telescopic observations of Neptune reveal
a.
a bluish-green disk with no visible surface detail.
b.
white clouds and a dark blue spot.
c.
belt-zone circulation as seen on Jupiter and Saturn.
d.
rapidly rising and sinking convection currents of different shades of blue.
e.
cyclonic storms near the planet’s equator.
Because of the lack of a temperature difference between the equator and poles of Jupiter, the
a.
cyclonic circulations on Earth are duplicated on Jupiter.
b.
high- and low-pressure regions are drawn into bands by the planet’s rapid rotation.
c.
belt-zone circulation is only a temporary phenomenon.
d.
belt-zone circulation is exceptionally stable.
e.
belt zone circulation is an illusion produced by the interaction of sunlight and chemicals in the Jovian atmosphere.
The narrowness of the rings of Uranus and Neptune is believed to be caused by
a.
gravitational interactions between ring particles.
b.
a spiral density wave which confines them.
c.
the magnetic field which holds them in place.
d.
the smaller mass of Uranus and Neptune as compared to that of Saturn.
e.
small shepherd moons that orbit near the rings.
Chapter 7 Solutions
21st Century Astronomy
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QPCh. 7 - Prob. 2QPCh. 7 - Prob. 3QPCh. 7 - Prob. 4QPCh. 7 - Prob. 5QP
Ch. 7 - Prob. 6QPCh. 7 - Prob. 7QPCh. 7 - Prob. 8QPCh. 7 - Prob. 9QPCh. 7 - Prob. 10QPCh. 7 - Prob. 11QPCh. 7 - Prob. 12QPCh. 7 - Prob. 13QPCh. 7 - Prob. 14QPCh. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Prob. 17QPCh. 7 - Prob. 18QPCh. 7 - Prob. 19QPCh. 7 - Prob. 20QPCh. 7 - Prob. 21QPCh. 7 - Prob. 22QPCh. 7 - Prob. 23QPCh. 7 - Prob. 24QPCh. 7 - Prob. 25QPCh. 7 - Prob. 26QPCh. 7 - Prob. 27QPCh. 7 - Prob. 28QPCh. 7 - Prob. 29QPCh. 7 - Prob. 30QPCh. 7 - Prob. 31QPCh. 7 - Prob. 32QPCh. 7 - Prob. 33QPCh. 7 - Prob. 34QPCh. 7 - Prob. 35QPCh. 7 - Prob. 36QPCh. 7 - Prob. 37QPCh. 7 - Prob. 38QPCh. 7 - Prob. 39QPCh. 7 - Prob. 40QPCh. 7 - Prob. 41QPCh. 7 - Prob. 42QPCh. 7 - Prob. 43QPCh. 7 - Prob. 44QPCh. 7 - Prob. 45QP
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- The odd orbits of Nereid and Triton, which are moons of Neptune, indicate that these a. moons were captured. b. moons formed simultaneously with the planet from the same piece of the solar nebula. c. moons broke off from the rapidly rotating planet. d. moons formed as the result from a giant impact early in the planet’s history. e. orbits were disturbed long ago in an interaction with some other body.arrow_forwardSome planets have very strong magnetic fields. What features must a planet have to cause this? a.both rapid rotation and a conducting liquid core b.only a rapid rotation c.only a liquid conducting core d.both a rapid rotation and a solid metallic core e.only a metallic corearrow_forwardSaturn, as viewed through a telescope, appears as a a. spherical and heavily cratered object. b. bland and nearly featureless disk. c. disk composed of brightly colored belts and bands. d. highly elliptical and bright blue disk.arrow_forward
- The rings of Uranus were discovered a. during an occultation (an eclipse) of a star. b. during an eclipse of one of the moons by the rings. c. during an eclipse of Uranus by the rings. d. as Uranus and the rings passed behind Jupiter. e. by the Voyager 1 spacecraft.arrow_forwardBelt-zone circulation is not easily visible on Uranus because a. no clouds form in the pure hydrogen atmosphere. b. there is no differential rotation. c. clouds form very deep in the atmosphere. d. that atmosphere is stirred by cyclonic circulation. e. there is no liquid metallic core.arrow_forward6 Why isn't there a planet where the asteroid belt is located? A The temperature in this portion of the solar nebula was just right to prevent rock from sticking together. B C D There was too much rocky material to form a terrestrial planet, but not enough gaseous material to form a jovian planet. There was not enough material in this part of the solar nebula to form a planet. Gravitational tugs from Jupiter prevented material from collecting together to form a planet. E A planet once formed here, but it was broken apart by a catastrophic collision.arrow_forward
- 1. Which of the outer planets have compositions dominated by the "ices" ingredient? Check the correct two. 2. Which of the outer planets have compositions dominated by the "gases" ingredient? Check the correct two. 3. Most of the spaceflight missions to the outer planets have been flyby missions, but two of them were orbiters. Which of these two spacecraft orbited giant planets? Check the correct two. (Hint: An orbiter might do a flyby of one planet and then go on to orbit a different planet.) 4. Jupiter's mass is how many times larger than the Earth's? Just type a number, no words or any other extra stuff. 5. Which of the outer planets has extreme seasons, with its rotational axis being tilted so much that it is practically in the plane of its orbit?arrow_forward14. Saturn's rings a. were created by its incredibly large gravitational capture of asteroids and comets b. have looked basically the same since they formed along with Saturn c. are continually supplied by impacts into small moons d. were created long ago when tidal forces tore apart a large moonarrow_forwardSurprisingly, the New Horizons probe took pictures of Pluto and found a. ongoing volcanic eruptions b. mountain ranges c. lakes of methane d. a lot of impact craters Pluto and other "dwarf planets" are not considered proper planets because a. they don't have any moons b. they are members of belts like the asteroid and Kuiper belts c. they don't have atmospheres d. their orbital inclinations are too high e. their orbits are too eccentric Which of these planets has never had an artificial satellite? a. Neptune b. Saturn c. Mars d. Jupiter e. Venusarrow_forward
- Astronomers concluded that there were several rings around Uranus when a. telescopic observations confirmed their existence. b. the light from an occulted (eclipsed) star repeatedly dimmed as the planet approached and again after it passed. c. the Voyager spacecraft photographed the ring system in visible light. d. Earth-based infrared telescopes examined the dust band around Uranus. e. reflected light from the ring particles was detected by orbiting spacecraft.arrow_forwardName Date Use the table to answer questions 13 through 15. NAME DISTANCE FROM AVERAGE ΤΥΡΕ ORBIT DIAMETER SUN (Million Miles) (Earth Days) (Miles) 3,032 TEMPERATURE ('C) Mercury 35 5,800 Terrestrial 88 Venus 67 260 Terrestrial 224 7,521 Earth 93 365 7,926 15 Terrestrial Mars 142 260 Terrestrial 687 4,222 Jupiter 484 2150 Gas 4332 88,846 74,898 31,763 Saturn 887 2170 Gas 10755 Uranus 1,784 2200 Gas 30687 Neptune 2,795 2220 Gas 60190 30,778arrow_forwardWhich of the following statements is correct? a. The formation of planets stopped because the solar nebula got cooler c. The formation of planets stopped because the solar nebula ran out of planetesimals d. The formation of planets stopped because the solar nebula spinning was slowing down e. The formation of planets stopped because the young Sun's strong solar wind swept away material not yet accreted onto the planetsarrow_forward
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