Astronomy college course/Solar system/Quiz 2
AstroWikipSolSys2_Study
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AstroWikipSolSys2_Study-v1s1
1. In astrophysics, what is accretion?
- ___ a) the increase in temperature and pressure of a star as it collapses from its own gravity
- ___ b) the growth in size of a massive star as its outer atmosphere expands
- ___ c) the growth of a massive object by gravitationally attracting more matter
- ___ d) the growth of a comet's tail as it comes close to the Sun
- ___ e) the condensation of volatiles as a gas cools
2. Dwarf planets are defined as objects orbiting the Sun and smaller than planets, that?
- ___ a) have been rounded by their own gravity
- ___ b) are too far from the Sun to be planets
- ___ c) lie in the asteroid belt
- ___ d) lack an atmosphere
- ___ e) possess an atmosphere
4. Pluto is classified as
- ___ a) a dwarf planet with no natural satellites
- ___ b) an asteroid belt object
- ___ c) a natural satellite of Neptune
- ___ d) a dwarf planet and a trans-Neptunian object.
- ___ e) a natural satellite of Uranus
6. Currently there are 7 billion people on Earth, if that ever increases to 10 billion people, for every person on Earth there will be ____ stars in the Milky Way galaxy.
- ___ a) 20
- ___ b) 200
- ___ c) 2
- ___ d) 2000
8. The revolution of Haley's comet around the Sun is opposite that of the 8 planets.
- ___ a) true
- ___ b) false
9. The frost line is situated approximately
- ___ a) 5 times as far from the Sun as the Earth is from the Sun
- ___ b) 10 times as far from the Sun as the Earth is from the Sun
- ___ c) 10 times as far from the Earth as the Earth's surface is from its center
- ___ d) 5 times as far from the Earth as the Earth's surface is from its center
Key to AstroWikipSolSys2_Study-v1s1
1. In astrophysics, what is accretion?
- - a) the increase in temperature and pressure of a star as it collapses from its own gravity
- - b) the growth in size of a massive star as its outer atmosphere expands
- + c) the growth of a massive object by gravitationally attracting more matter
- - d) the growth of a comet's tail as it comes close to the Sun
- - e) the condensation of volatiles as a gas cools
2. Dwarf planets are defined as objects orbiting the Sun and smaller than planets, that?
- + a) have been rounded by their own gravity
- - b) are too far from the Sun to be planets
- - c) lie in the asteroid belt
- - d) lack an atmosphere
- - e) possess an atmosphere
4. Pluto is classified as
- - a) a dwarf planet with no natural satellites
- - b) an asteroid belt object
- - c) a natural satellite of Neptune
- + d) a dwarf planet and a trans-Neptunian object.
- - e) a natural satellite of Uranus
6. Currently there are 7 billion people on Earth, if that ever increases to 10 billion people, for every person on Earth there will be ____ stars in the Milky Way galaxy.
- + a) 20
- - b) 200
- - c) 2
- - d) 2000
8. The revolution of Haley's comet around the Sun is opposite that of the 8 planets.
- + a) true
- - b) false
9. The frost line is situated approximately
- + a) 5 times as far from the Sun as the Earth is from the Sun
- - b) 10 times as far from the Sun as the Earth is from the Sun
- - c) 10 times as far from the Earth as the Earth's surface is from its center
- - d) 5 times as far from the Earth as the Earth's surface is from its center
- Attribution (for quiz questions) under CC-by-SA license
- http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Solar_system/Quiz_2&oldid=1298068
- Study guide
- http://en.wikipedia.org/w/index.php?title=Solar_System&oldid=589452802