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Pluto’s density is 1.8 g/cm 3. This implies that Pluto
a. has a large iron-nickel core.b. is about 50 percent water and 50 percent rocky material.c. should have a magnetic field about one-third as strong as Earth’s.d. is still geologically active.e. probably has a small ring system that hasn’t yet been detected.
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- Some 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 coreBecause 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 condensation sequence predicts that asteroids consisting of carbonaceous material would form a. in the inner solar system where it is warmer. b. at random locations then migrating to the outer asteroid belt due to the gravitational influence of Jupiter and Saturn. c. in the outer solar system where it is very cold. d. between the orbits of Jupiter and Saturn. e. in the outer asteroid belt where it is cooler.
- The high-speed winds, high-level white clouds of methane ice crystals, and cyclonic circulations on Neptune are produced by the a. large amount of heat from the sun that is received at Neptune’s distance. b. small amount of heat from the sun and the flow of heat from the interior of the planet. c. strong magnetic field of the planet. d. flow of heat from the interior of the planet. e. unusually rapid rotation of the planet.Saturn, 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.The Cassini division is a large gap in the rings of Saturn. This gap is most likely produced by a. the reflection of sunlight off dark material. b. resonances between ring particles and the moon Mimas. c. shepherding satellites. d. the absorption of sunlight by dark material.
- 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.On the "canteloupe" hemisphere of Neptune's moon Triton, we see channels that were carved by liquid a. water b. lava c. methane d. ammonia e. nitrogen The 2004 landing on Saturn's moon Titan was achieved by the probe called a. Galileo b. Dawn c. Voyager 1 d. Huygens e. New Horizons6 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.
- 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.Due to tidal forces, a moon orbiting a planet will eventually a always keep the same side toward the planet b collide with the planet c break up into a number of fragments d develop a warmer climate as time goes on Jupiter's moon Io is very volcanically active, which means it has plate tectonics. a. true b. falseQUESTION 3 The surface of Venus receives a. a lot more sunlight than the surface of the Earth b. much less sunlight than the surface of the Earth c. about as much sunlight as the surface of the Earth QUESTION 4 Venus has very low surface wind speed because a. the greenhouse effect makes the surface temperature nearly uniform b. it has a very thin atmosphere c. the thick clouds don't allow for much convection in the atmosphere d. it doesn't have a large moon