# Astronomy college course/Apparent regrograde motion/Quiz01
## AstroApparentRetroMotion_Study

Template:EduV/quizedit
If you are reading this as a Wikiversity page, proper pagebreaks should result if printed using your browser's print option, usually located in the upper right portion of your screen. But, pagebreaks do not render properly if you use "Printable version" on Wikiversity's Print/export option on the left-hand sidebar. Attribution for the quizzes, and study links are at the end of this document.

### AstroApparentRetroMotion_Study-v1s1

1. ____ motion is in the usual direction, and _______ is motion that has temporarily reversed itself.
    ___ a) indirect; direct
    ___ b) elliptical; retrograde
    ___ c) retrograde; direct
    ___ d) direct; retrograde
    ___ e) direct; elliptical
2. Under what conditions would a planet not seem to rise in the east and set in the west?
    ___ a) if the planet is in retrograde motion
    ___ b) if the observer is near the north or south poles
    ___ c) if the observer is below the equator
    ___ d) if the planet is in elliptical motion
    ___ e) if the planet is in direct motion
3. When the faster moving Earth overtakes a slower planet outside Earth's orbit
    ___ a) tidal forces can be observed on the planet
    ___ b) all of these are true
    ___ c) two of these are true
    ___ d) tidal forces can be observed on Earth
    ___ e) retrograde motion occurs
4. Which planet spends more days in a given retrograde?
    ___ a) They are all equal
    ___ b) Mars
    ___ c) It depends on the season
    ___ d) Earth
    ___ e) Saturn
5. Which planet has more days between two consecutive retrogrades?
    ___ a) Saturn
    ___ b) They are all equal
    ___ c) Mars
    ___ d) Earth
    ___ e) It depends on the season
6. A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.
    ___ a) 24
    ___ b) 6
    ___ c) 1
    ___ d) 12
    ___ e) 3
7. If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?
    ___ a) 12
    ___ b) 24
    ___ c) 6
    ___ d) 3
    ___ e) 1
8. Planet comes from the Greek word for 'wanderer'.
    ___ a) true
    ___ b) false
9. We know that Galileo saw Neptune, but is not credited with its discovery because
    ___ a) he thought it was a moon of Saturn
    ___ b) it was in a transition between retrograde and direct motion
    ___ c) none of these are true
    ___ d) he never published his drawing
    ___ e) it was too faint to be worth drawing

#### Key to AstroApparentRetroMotion_Study-v1s1

1. ____ motion is in the usual direction, and _______ is motion that has temporarily reversed itself.
    - a) indirect; direct
    - b) elliptical; retrograde
    - c) retrograde; direct
    + d) direct; retrograde
    - e) direct; elliptical
2. Under what conditions would a planet not seem to rise in the east and set in the west?
    - a) if the planet is in retrograde motion
    + b) if the observer is near the north or south poles
    - c) if the observer is below the equator
    - d) if the planet is in elliptical motion
    - e) if the planet is in direct motion
3. When the faster moving Earth overtakes a slower planet outside Earth's orbit
    - a) tidal forces can be observed on the planet
    - b) all of these are true
    - c) two of these are true
    - d) tidal forces can be observed on Earth
    + e) retrograde motion occurs
4. Which planet spends more days in a given retrograde?
    - a) They are all equal
    - b) Mars
    - c) It depends on the season
    - d) Earth
    + e) Saturn
5. Which planet has more days between two consecutive retrogrades?
    - a) Saturn
    - b) They are all equal
    + c) Mars
    - d) Earth
    - e) It depends on the season
6. A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.
    - a) 24
    + b) 6
    - c) 1
    - d) 12
    - e) 3
7. If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?
    + a) 12
    - b) 24
    - c) 6
    - d) 3
    - e) 1
8. Planet comes from the Greek word for 'wanderer'.
    + a) true
    - b) false
9. We know that Galileo saw Neptune, but is not credited with its discovery because
    - a) he thought it was a moon of Saturn
    + b) it was in a transition between retrograde and direct motion
    - c) none of these are true
    - d) he never published his drawing
    - e) it was too faint to be worth drawing

   ##### Attribution (for quiz questions) under CC-by-SA license

    http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Apparent_regrograde_motion/Quiz01&oldid=1284510

   ##### Study guide

    http://en.wikipedia.org/w/index.php?title=User:Guy_vandegrift/Astronomy_college_course/Apparent_retrograde_motion&oldid=615635101