Astronomy college course/Pluto and planetary mass quiz

AstroPluto and planetary mass_Study

WHY THIS PAGE IS PROTECTED - Original version of this quiz

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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