# Astronomy college course/Pluto and planetary mass quiz

Astronomy college course#Planetary mass

## AstroPluto and planetary mass_Study

Template:EduV/quizedit
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### AstroPluto and planetary mass_Study-v1s1

1. Which of the following is NOT used to measure the mass of a planet
    ___ a) the motion of a neighboring planet
    ___ b) all of these have been used
    ___ c) the rotation of the planet about its axis
    ___ d) the motion of an artificial satellite
    ___ e) the motion of a moon
2. What is unusual about calculations of the mass of Pluto made in the early part of the 20th century?
    ___ a) It was the first time a planet's period of orbit around the sun was used to calculate the planet's mass
    ___ b) It was the first time a moon was used to calculate the mass of a planet
    ___ c) The estimates were too low. Pluto was actually more massive than they thought.
    ___ d) The estimates were high. Pluto was less massive than they calculated
    ___ e) The estimates were correct to within less than 10%
3. Why was the discovery of Pluto peculiar?
    ___ a) It was the first time a planet's period of orbit around the sun was used to calculate the planet's mass
    ___ b) It was seen by Galileo, who thought it was a star
    ___ c) It was seen by Halley, who was looking for comets
    ___ d) It was discovered by a calculation based on flawed assumptions
    ___ e) It was discovered during a survey looking for stars
4. Which of the following is NOT used to measure the mass of a planet
    ___ a) the motion of a neighboring planet
    ___ b) the motion of an artificial satellite
    ___ c) the motion of a moon
    ___ d) all of these have been used
5. Which statement describes the relation between Pluto and Neptune
    ___ a) Pluto's orbit intersects Neptune's orbit an the two bodies will eventually collide
    ___ b) Pluto's orbit intersects Neptune's orbit but they avoid each other because Pluto's mass is too small
    ___ c) Pluto's orbit intersects Neptune's orbit but they don't collide because of an orbital resonance between the two
    ___ d) Pluto's orbit lies outside Neptune's orbit

#### Key to AstroPluto and planetary mass_Study-v1s1

1. Which of the following is NOT used to measure the mass of a planet
    - a) the motion of a neighboring planet
    - b) all of these have been used
    + c) the rotation of the planet about its axis
    - d) the motion of an artificial satellite
    - e) the motion of a moon
2. What is unusual about calculations of the mass of Pluto made in the early part of the 20th century?
    - a) It was the first time a planet's period of orbit around the sun was used to calculate the planet's mass
    - b) It was the first time a moon was used to calculate the mass of a planet
    - c) The estimates were too low. Pluto was actually more massive than they thought.
    + d) The estimates were high. Pluto was less massive than they calculated
    - e) The estimates were correct to within less than 10%
3. Why was the discovery of Pluto peculiar?
    - a) It was the first time a planet's period of orbit around the sun was used to calculate the planet's mass
    - b) It was seen by Galileo, who thought it was a star
    - c) It was seen by Halley, who was looking for comets
    + d) It was discovered by a calculation based on flawed assumptions
    - e) It was discovered during a survey looking for stars
4. Which of the following is NOT used to measure the mass of a planet
    - a) the motion of a neighboring planet
    - b) the motion of an artificial satellite
    - c) the motion of a moon
    + d) all of these have been used
5. Which statement describes the relation between Pluto and Neptune
    - a) Pluto's orbit intersects Neptune's orbit an the two bodies will eventually collide
    - b) Pluto's orbit intersects Neptune's orbit but they avoid each other because Pluto's mass is too small
    + c) Pluto's orbit intersects Neptune's orbit but they don't collide because of an orbital resonance between the two
    - d) Pluto's orbit lies outside Neptune's orbit

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

    http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Pluto_and_planetary_mass_quiz&oldid=1388652

   ##### Study guide

    http://en.wikipedia.org/w/index.php?title=Pluto&oldid=664428172