Test 3 Astronomy

	Adams and Leverrier predicted the position of Neptune, based on its perturbations of Student Response Value Correct Answer A. the Sun.  B. Uranus. 100%    C. Triton. D. Saturn's rings. E. Jupiter. Score: 1.9/1.9
2.
	The planet Neptune is Student Response Value Correct Answer A. easily visible with the naked eye. B. barely visible with the naked eye. C. only visible with a space-based telescope.  D. only visible with a small telescope or binoculars. 100%    E. only visible with a large, high quality telescope. Score: 1.9/1.9
3.
	What is true of Jupiter's magnetosphere? Student Response Value Correct Answer A. It does not trap protons and electrons, as Earth's Van Allen belts do. B. It is most extensive on the sunward side of the planet. C. Although its surface field is greater, since the planet is larger the total field is actually weaker than Earth's.  D. It has a tail that extends at least to Saturn's orbit. 100%    E. It is only slightly stronger than Saturn's. Score: 1.9/1.9
4.
	Which of the following best describes the composition of the particles forming Saturn's rings? Student Response Value Correct Answer A. Methane ice B. Hydrogen and helium C. Volcanic rock  D. Water ice 100%    E. Metallic grains Score: 1.9/1.9
5.
	Which three played a role in the finding of Neptune? Student Response Value Correct Answer A. Herschel, Hubble, and Einstein  B. Adams, Leverrier, and Galle 100%    C. Bode, Herschel, and Fraunhofer D. Newton, Einstein, and Tombaugh E. Shapley, Hubble, and Whipple Score: 1.9/1.9
6.
	In addition to Saturn's Titan, which other moon has a nitrogen atmosphere? Student Response Value Correct Answer A. Jupiter's Europa  B. Neptune's Triton 100%    C. Jupiter's Ganymede D. Uranus' Titania E. Pluto's Charon Score: 1.9/1.9
7.
	Compared to Jupiter, Saturn's atmosphere is Student Response Value Correct Answer A. much thicker causing the visibility of the lower layers to be reduced. B. more colorful with variations in color easily viewed from Earth. C. more calm with fewer disturbances or storms.     D. more uniform with no significant variation in color in the lower cloud levels. 0% E. more violent with larger storm phenomena easily viewed from Earth. Score: 0/1.9
8.
	Which of the jovian planets have rings? Student Response Value Correct Answer A. Saturn B. Neptune C. Jupiter D. Uranus  E. all of the above 100%    Score: 1.9/1.9
9.
	How do astronomers think Jupiter generates its internal heat? Student Response Value Correct Answer A. internal friction due to its high rotation rate B. chemical processes C. radioactive decay D. nuclear fusion in the core  E. by contracting, changing gravitational potential energy into thermal energy 100%    Score: 1.9/1.9
10.
	Where is Jupiter's ring located? Student Response Value Correct Answer A. in a thin ring at the distance of Io but inclined by an angle of about 30 degrees to Io's orbit B. between the orbits of Io and Europa C. between the orbit of the inner-most moon and the orbit of Io D. sharing the orbit of Amalthea  E. above Jupiter's cloud tops and inside the orbit of its inner-most moon 100%    Score: 1.9/1.9
11.
	Planetary rings are Student Response Value Correct Answer A. composed of a large number of individual particles that orbit their planet in accord with Kepler's third law. B. orbiting in the equatorial plane of their planet. C. known to exist for all of the jovian planets. D. nearer to their planet than any of the planet's large moons.  E. all of the above 100%    Score: 1.9/1.9
12.
	Unlike the atmospheres of Jupiter and Saturn, Uranus and Neptune have almost no Student Response Value Correct Answer A. Hydrogen. B. Methane.  C. Ammonia. 100%    D. Helium. E. Nitrogen. Score: 1.9/1.9
13.
	What moon of Saturn is moving in a chaotic motion due Student Response Value Correct Answer A. Mimas B. Iapetus C. Enceladus  D. Hyperion 100%    Score: 1.9/1.9
14.
	The magnetic field tilts of which two bodies are the most unusual? Student Response Value Correct Answer A. Mars and Saturn B. Saturn and Venus C. Mercury and Earth  D. Uranus and Neptune 100%    E. Jupiter and Saturn Score: 1.9/1.9
15.
	Jupiter's colors come in part from its three layers of clouds. Which of the following is not the primary constituent of one of Jupiter's cloud layers? Student Response Value Correct Answer A. clouds of ammonium hydrosulfide  B. clouds of sulfuric acid 100%    C. clouds of ammonia D. clouds of water Score: 1.9/1.9
16.
	Jupiter and the other jovian planets are noticeably oblate because Student Response Value Correct Answer A. their powerful gravity acts stronger on the closer poles than the distant equator.  B. they all have strong magnetic fields that deform their shape. 0% C. they are fluid bodies that are spinning rapidly.    D. they are tidally distorted by the pulls for their satellite systems. E. All of the above are correct. Score: 0/1.9
17.
	Which statements about the magnetic fields of Uranus and Neptune is FALSE? Student Response Value Correct Answer A. Neptune's field is tilted 47 degrees to its more conventional rotational axis. B. Neither fits the Dynamo model very well.  C. Both pass directly through the cores of their planets, like all other fields. 100%    D. Both may have ammonia water replacing the liquid metallic hydrogen. E. Uranus' field is tilted 60 degrees off its already tilted rotational axis. Score: 1.9/1.9
18.
	Shepherd satellites are defined as: Student Response Value Correct Answer A. a type of moon that orbits another moon. B. satellites in the coma of a comet.  C. moons that confine a narrow ring. 100%    D. moons that follow the exact orbit of another, larger, moon. E. moons that orbit inside the system of rings. Score: 1.9/1.9
19.
	Which of the following best explains why we see horizontal "stripes" in photographs of Jupiter and Saturn? Student Response Value Correct Answer A. There are three different color stripes corresponding to the three different types of clouds found on these planets. B. The dark and light stripes correspond to alternating bands of different chemical composition. C. Dark stripes are those in which there is a stratosphere and light stripes are those with no stratosphere.  D. The light stripes are regions of high clouds, and the dark stripes are regions where we can see down to deeper, darker clouds. 100%    Score: 1.9/1.9
20.
	Which of the following is not a general characteristic of the four jovian planets in our solar system? Student Response Value Correct Answer A. They are composed mainly of hydrogen, helium, and hydrogen compounds. B. They lack solid surfaces.  C. They are higher in average density than are the terrestrial planets. 100%    D. They are much more massive then any of the terrestrial planets. Score: 1.9/1.9
21.
	Which Jovian moon shows the most diverse terrain, suggesting a violent impact broke it into many pieces, some of which reformed it as a jumbled puzzle? Student Response Value Correct Answer A. Io B. Triton C. Ganymede  D. Miranda 100%    E. Enceladus Score: 1.9/1.9
22.
	Overall, Jupiter's composition is most like that of ________. Student Response Value Correct Answer A. an asteroid B. Earth  C. the Sun 100%    D. a comet Score: 1.9/1.9
23.
	What is the Cassini division of Saturn's rings? Student Response Value Correct Answer A. the imaginary circle marking the halfway point of Saturn's rings B. a dark ring, visible from Earth, composed of dark, dusty particles C. a large gap, visible from Earth, produced by an orbital resonance with the moon Mimas    D. the most opaque ring of Saturn, made of highly reflective ice particles  E. the widest ring of Saturn, located between two large ring gaps 0% Score: 0/1.9
24.
	How was the rotation rate of Jupiter's core determined? Student Response Value Correct Answer A. by observing the Great Red Spot  B. by radio observations of Jupiter's rapidly spinning magnetosphere 100%    C. by measuring the oblateness of Jupiter's disk D. by observing the fastest moving regions of Jupiter's equator E. by watching Io move across the disk of Jupiter Score: 1.9/1.9
25.
	In strength, the magnetic fields of Uranus and Neptune are: Student Response Value Correct Answer A. very different, with flopped over Uranus having no field, and Neptune a strong one. B. perfect fits for the Dynamo theory. C. like Jupiter and Saturn, due to mantles of liquid metallic hydrogen. D. even stronger than that of Jupiter.  E. similar, with both about 100 times stronger than our own. 100%    Score: 1.9/1.9
26.
	Which of the following gases is not a significant ingredient of the jovian planet atmospheres? Student Response Value Correct Answer A. hydrogen B. Ammonia  C. carbon dioxide 100%    D. helium Score: 1.9/1.9
27.
	In 1846, Johann Galle found Neptune Student Response Value Correct Answer  A. using just a pair of binoculars. 0% B. using grossly inaccurate star charts. C. a few degrees from where it was predicted to be.    D. after many years of searching for it. E. exactly where he predicted it would be. Score: 0/1.9
28.
	A moon that goes inside the Roche Limit will Student Response Value Correct Answer  A. be torn apart by the planet's tidal forces. 100%    B. collide with a major satellite. C. get heated by the strong magnetic fields. D. escape its planet's gravity. E. become a planet. Score: 1.9/1.9
29.
	How thick are Saturn's rings from top to bottom? Student Response Value Correct Answer A. a few million kilometers B. a few kilometers C. a few tens of thousands of kilometers  D. a few tens of meters 100%    E. a few hundred kilometers Score: 1.9/1.9
30.
	Which jovian planet should have the most extreme seasonal changes? Student Response Value Correct Answer A. Jupiter B. Neptune  C. Uranus 100%    D. Saturn Score: 1.9/1.9
31.
	Neptune and Uranus have a bluish tint because: Student Response Value Correct Answer A. ammonia ice reflects blue light better than any other color.  B. their atmospheres contain methane, which absorbs red light. 100%    C. at their distances, the Sun appears blue, the red absorbed by dust in the ecliptic. D. their atmospheres contain hydrogen and helium. E. they are far away and distance makes objects appear bluish. Score: 1.9/1.9
32.
	Which Saturnian moon has the leading hemisphere black as tar, the back side icy white? Student Response Value Correct Answer A. Titan B. Enceladus C. Mimas D. Rhea  E. Iapetus 100%    Score: 1.9/1.9
33.
	William Herschel thought he had found a comet when he spotted the green disk of: Student Response Value Correct Answer A. Neptune.  B. Uranus. 100%    C. Titania. D. Oberon. E. Triton. Score: 1.9/1.9
34.
	Which moon is considered likely to have a deep, subsurface ocean of liquid water? Student Response Value Correct Answer A. Triton B. Miranda  C. Europa 100%    D. Io Score: 1.9/1.9
35.
	In terms of axial tilt, which of the jovians shows us the largest inclination? Student Response Value Correct Answer A. Neptune B. Jupiter C. Pluto  D. Uranus 100%    E. Saturn Score: 1.9/1.9
36.
	At the equator during the equinoxes on Uranus a day lasts Student Response Value Correct Answer A. 84 years. B. 21 years. C. 42 years. D. 7 hours.  E. 8 hours. 100%    Score: 1.9/1.9
37.
	How do astronomers think Saturn generates its internal heat? Student Response Value Correct Answer  A. by raining dense helium droplets from higher to lower altitudes, resembling the process of differentiation 100%    B. internal friction due to its high rotation rate C. chemical processes D. radioactive decay E. nuclear fusion in the core Score: 1.9/1.9
38.
	Which statement about Io is true? Student Response Value Correct Answer  A. It is the most volcanically active body in our solar system. 100%    B. It is thought to have a deep, subsurface ocean of liquid water. C. It is the largest moon in the solar system. D. It is the only moon in the solar system with a thick atmosphere. Score: 1.9/1.9
39.
	If you found a bathtub big enough to hold Saturn, then Student Response Value Correct Answer A. it would precipitate helium into the tub. B. Saturn would explode upon contact with water. C. Saturn would sink like a rock, due to its denser core.  D. Saturn could float. 100%    E. Saturn would drown, because it does not know how to swim. Score: 1.9/1.9
40.
	How were the rings of Uranus discovered? Student Response Value Correct Answer A. by Voyager 2 when it passed by Uranus in 1986 B. by William Herschel, while he also found the two largest moons C. by the Hubble Space Telescope in the infrared  D. photometric observations of the occultation of a star made from Earth 100%    E. by Percival Lowell, who observed two "bumps" on either side of Uranus Score: 1.9/1.9
41.
	On what basis did Herschel think he had found a comet? Student Response Value Correct Answer A. No star appeared in that position on his charts.  B. The object appeared as a small greenish disk in his telescope. 0% C. It appeared to be moving slightly night by night. D. It was not a point of light, like a star should appear. E. All of the above are correct.    Score: 0/1.9
42.
	In 1989, Neptune was found to have a huge storm named the: Student Response Value Correct Answer A. Galileo Regio.  B. Great Dark Spot. 100%    C. Hellas Basin. D. Great Red Spot. E. South Tropical Disturbance. Score: 1.9/1.9
43.
	Which moon has a thick atmosphere made mostly of nitrogen? Student Response Value Correct Answer A. Ganymede B. Europa  C. Titan 100%    D. Triton Score: 1.9/1.9
44.
	A day at the north pole of Uranus lasts Student Response Value Correct Answer A. about 21 years.  B. about 42 years. 100%    C. about 8 hours. D. about 84 years. E. about 7 hours. Score: 1.9/1.9
45.
	Which moon of Saturn shows the largest impact crater, relative to its size? Student Response Value Correct Answer A. Miranda B. Enceladus  C. Mimas 100%    D. Titan E. Callisto Score: 1.9/1.9
46.
	When Saturn is at Equinox, its rings will Student Response Value Correct Answer A. double the planet's brightness. B. contract closer to the planet's surface. C. appear face-on to the earth. D. lie perpendicular to the plane of the ecliptic.  E. lie in the plane of the ecliptic. 100%    Score: 1.9/1.9
47.
	Although the atmospheres of Uranus and Neptune are very similar, the atmosphere of Neptune contains more Student Response Value Correct Answer A. Nitrogen. B. Ammonia.  C. Methane. 100%    D. Hydrogen. E. Helium. Score: 1.9/1.9
48.
	What is the Great Red Spot? Student Response Value Correct Answer A. a place where reddish particles from Io impact Jupiter's surface  B. a long-lived, high-pressure storm on Jupiter 100%    C. a hurricane that comes and goes on Jupiter D. a region on Jupiter where the temperature is so high that the gas glows with red visible light Score: 1.9/1.9
49.
	Which of the jovian moons is the largest and also the largest moon in the solar system, even bigger than Mercury? Student Response Value Correct Answer A. Umbriel B. Titan  C. Ganymede 100%    D. Triton E. Callisto Score: 1.9/1.9
50.
	The planet Uranus is Student Response Value Correct Answer A. only visible with a small telescope or binoculars. B. barely visible with the naked eye.     C. only visible with a space-based telescope. 0% D. only visible with a large, high quality telescope. E. easily visible with the naked eye. Score: 0/1.9
51.
	Which of the Uranian moons displays the widest range of surface terrains, suggesting some catastrophic disruption? Student Response Value Correct Answer  A. Miranda 100%    B. Oberon C. Puck D. Ariel E. Umbriel Score: 1.9/1.9
52.
	What mechanism is most responsible for generating the internal heat of Io that drives its volcanic activity? Student Response Value Correct Answer A. bombardment B. differentiation  C. tidal heating 100%    D. accretion E. radioactive decay Score: 1.9/1.9
53.
	A moon with a smooth, uncratered surface would imply Student Response Value Correct Answer  A. the surface is very young. 100%    B. meteorites have never struck the moon. C. a strong magnetic field surrounds the moon. D. the surface is completely liquid. E. the moon lies within the planet's Roche Limit. Score: 1.9/1.9
54.
	Which statement about Jupiter's rings is false? Student Response Value Correct Answer A. They lie closer to Jupiter than Io's orbit.  B. They are made of ice, like Saturn's. 100%    C. They are made of dark dusty particles. D. They may be made in part of material from Metis and Adrastea. E. They lie in the planet's equatorial plane. Score: 1.9/1.9
55.
	Which of these is true about the seasons of Uranus? Student Response Value Correct Answer  A. Its strange tilt produces extreme seasonal variations, especially at the poles. 100%    B. There are nor season at the poles. C. At the Uranian pole the Sun sets every 16 hours during the summer and winter. D. At the Uranian equator, the Sun would pass overhead every sixteen hours. E. With a tilt of 29 degrees, they are not that different from our solstices and equinoxes. Score: 1.9/1.9