Pluto: Orbit, Rotation, Surface, Atmosphere, and Moons

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What caused Pluto's change in classification?

  • The discovery of Ceres
  • The discovery of Eris (correct)
  • The change in mass of Eris
  • The change in size of Pluto

How does Eris compare to Pluto in terms of size?

  • Eris is initially thought to be larger than Pluto (correct)
  • Eris is the same size as Pluto
  • Eris is closer to the Sun than Pluto
  • Eris is much smaller than Pluto

Why was there confusion around how to classify Eris?

  • Its density was unknown
  • Its orbit passed beyond the Kuiper Belt
  • Its distance from the Sun made classification difficult (correct)
  • Its size was similar to Pluto

What decision did the IUA make regarding Eris and Pluto in 2006?

<p>Identified Eris as a dwarf planet and changed Pluto's classification to a planet (D)</p> Signup and view all the answers

Which moon orbits Eris?

<p>Dysnomia (C)</p> Signup and view all the answers

What is the radius of Eris?

<p>$722$ miles $(1,163$ km$)$ (B)</p> Signup and view all the answers

How often does Eris orbit the Sun?

<p>$557$ Earth years (D)</p> Signup and view all the answers

What makes Eris the most massive of all known dwarf planets?

<p>$16,600,000,000,000,000,000,000$ km mass (B)</p> Signup and view all the answers

What very little is known about regarding Eris?

<p>Its atmosphere (C)</p> Signup and view all the answers

Which prediction do scientists make about dwarf planets in the solar system?

<p>$100$ additional dwarf planets will likely be classified (D)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Browser