quiz 4 Astronomy

1.
	Which planet by itself contains the majority of mass of all the planets? Student Response Value Correct Answer A. Uranus  B. Jupiter 100%    C. the earth D. Saturn E. Venus Score: 1/1
2.
	What is true about solar system densities? Student Response Value Correct Answer A. Planetary density increases with increasing distance from the Sun.  B. The denser planets lie closer to the Sun. 100%    C. The asteroids all have about the same density. D. Saturn has the same density as water. E. In differentiated bodies, the denser materials lie near their surfaces. Score: 1/1
3.
	Masses of the planets are easiest to determine if: Student Response Value Correct Answer A. they are terrestrial and the extra size of the planet's disk can be measured. B. they move rapidly and their periods are easily measured. C. they are dense and easily deflect the path of passing spacecraft.  D. they have natural satellites whose motions can be precisely measured. 100%    E. they are jovian and their oblateness can be found. Score: 1/1
4.
	Which of these bodies has the lowest density? Student Response Value Correct Answer A. an asteroid B. Saturn  C. a comet 100%    D. Kuiper Belt objects E. Jupiter Score: 1/1
5.
	The plane in which almost all planets orbit the sun is called the: Student Response Value Correct Answer A. node. B. equant.  C. ecliptic. 100%    D. galactic plane. E. equator of the solar system. Score: 1/1
6.
	Mercury's most unusual orbital feature, as compared to the other planets, is Student Response Value Correct Answer  A. the shape of its orbit. 100%    B. its orbital period. C. that it has no moons. D. the size of the planet. E. the size of its orbit. Score: 1/1
7.
	How do the densities of the jovian and terrestrial planets compare? Student Response Value Correct Answer A. The closer a planet lies to the Sun, the less its density. B. Made from the same solar nebula, they are all similar. C. More massive jovians all have high densities, compared to the tiny terrestrials.  D. All terrestrials are more dense than any of the jovians. 100%    E. No real pattern here; densities vary greatly and are very individual to each world. Score: 1/1
8.
	Which of the following are the Jovian planets? Student Response Value Correct Answer  A. Jupiter, Saturn, Uranus, and Neptune only 100%    B. Jupiter, Saturn, Uranus, Neptune, and Pluto C. only Jupiter and Saturn D. everything past Mars and the asteroid belt E. only Jupiter Score: 1/1
9.
	Which characteristic listed below describes the jovian planets? Student Response Value Correct Answer A. small masses B. solid surfaces  C. low density 100%    D. close to the Sun E. slow rotational period Score: 1/1
10.
	The jovian planets Student Response Value Correct Answer A. all spin slower than the earth. B. are all much more dense than any of the terrestrials planets. C. have satellite systems with less than 4 moons.  D. all have rings around their equators. 100%    E. all lie less than 5 AU from the Sun. Score: 1/1
11.
	The Kuiper Belt is found where in the solar system? Student Response Value Correct Answer A. sixty degrees ahead or behind Jupiter  B. beyond the orbit of Neptune 100%    C. between the orbits of Jupiter and Uranus D. between the orbits of Mars and Jupiter E. among the orbits of the terrestrial planets Score: 1/1
12.
	In composition and density, the asteroids most resemble: Student Response Value Correct Answer A. Kuiper Belt objects like Pluto. B. the Sun.  C. pieces of terrestrial planets. 100%    D. jovian moons. E. comets. Score: 1/1
13.
	The smallest sort of interplanetary matter is called Student Response Value Correct Answer A. a comet. B. an asteroid.  C. interplanetary dust. 100%    D. a meteoroid. E. a Kuiper Belt Object. Score: 1/1
14.
	Which of the following is not icy in composition? Student Response Value Correct Answer A. Kuiper Belt Objects  B. asteroids 100%    C. the polar cap of Mars D. most Jovian satellites E. comet nuclei Score: 1/1
15.
	A meteorite is Student Response Value Correct Answer A. a streak of light in the atmosphere. B. an icy body with a long tail extending from it.  C. a chunk of space debris that has struck the ground. 100%    D. a chunk of space debris orbiting the Earth. E. an irregularly shaped body, mostly found orbiting between Mars and Jupiter. Score: 1/1
16.
	The tail of a comet always points Student Response Value Correct Answer A. toward the Sun and disappears at perihelion. B. toward Earth and never varies. C. away from the Sun and disappears at perihelion. D. in the direction of the comet's motion.  E. away from the Sun and becomes longest and brightest at perihelion. 100%    Score: 1/1
17.
	Which objects in the solar system have been least modified since the formation of the solar system? Student Response Value Correct Answer  A. Kuiper Belt objects 100%    B. jovian moons C. terrestrial planets D. asteroids E. meteoroids Score: 1/1
18.
	As the solar nebula contracts due to gravitation, the cloud Student Response Value Correct Answer A. becomes more spherical in shape. B. begins to cool.  C. spins faster. 100%    D. changes direction of motion. E. expands. Score: 1/1
19.
	The Kuiper Belt is found where in the solar system? Student Response Value Correct Answer A. among the orbits of the terrestrial planets B. between the orbits of Jupiter and Uranus C. between the orbits of Mars and Jupiter  D. beyond the orbit of Neptune 100%    E. sixty degrees ahead or behind Jupiter Score: 1/1
20.
	What might have made the original solar nebula begin to contract? Student Response Value Correct Answer A. the Big Bang B. the formation of our arm of the Milky Way C. interstellar magnetism generated by pulsars  D. the shock wave from a nearby exploding star 100%    E. the large amount of angular momentum in the nebula Score: 1/1
21.
	Dust is an important part of the nebular theory of solar system formation because dust is needed to explain Student Response Value Correct Answer  A. how the inner planets came to be rocky bodies. 100%    B. how the initial cloud heated as it contracted. C. how the outer planets came to be gaseous bodies. D. how the initial cloud cooled enough to collapse. E. why the icy bodies are located so far from the Sun. Score: 1/1
22.
	What phase of planet formation caused the jovian planets to form? Student Response Value Correct Answer A. differentiation B. fragmentation C. condensation D. core-accretion     E. collision 0% Score: 0/1