# Astronomy college course/Solar system/Quiz 2

Astronomy_college_course#Solar_System

## AstroWikipSolSys2_Study

Template:EduV/quizedit
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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
3. Dwarf planets have no natural satellites,
    ___ a) true
    ___ b) false
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
5. How many of the outer planets have rings?
    ___ a) 4
    ___ b) 3
    ___ c) 2
    ___ d) 1
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
7. The revolution of Haley's comet around the Sun is nearly circular.
    ___ a) true
    ___ b) false
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
3. Dwarf planets have no natural satellites,
    - a) true
    + b) false
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
5. How many of the outer planets have rings?
    + a) 4
    - b) 3
    - c) 2
    - d) 1
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
7. The revolution of Haley's comet around the Sun is nearly circular.
    - a) true
    + b) false
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