Chapter 23 Sample Questions PDF

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Summery review questions from AST-A100 The Solar System Chapter 23...

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Chapter 23: Kuiper Belt and TNOs (Pluto) Summary Review Questions What is a reason Pluto isn't a planet?  It is too small Which of the following about Pluto is true?  It's surface is very reflective, it is one of the largest known TNOs, and it has an atmosphere of mostly nitrogen What is the biggest known TNO?  Pluto is the biggest known TNO! What object in the Kuiper belt has the most interesting orbit known to date?  Sedna How many known moons does Pluto have?  5 moons Why doesn't Pluto hit Neptune?  Neptune is at least 90 degrees away when orbits cross How much do we know about objects in the Kuiper Belt?  We know some of the objects in the Kuiper Belt and that there are many more objects undiscovered What is the orbital period of Sedna?  12000 years Why is Pluto's atmosphere getting thicker?  Cryovolcanoes What is a TNO?  Trans-Neptunian Object How Charon came to be a mystery, but what is thought to be a reason for its creation since its tides are locked with Pluto?  It might have been made by colliding with Pluto. Which direction does Pluto rotate?  Backwards Which moon belongs to Eris?  Dysnomia

The Kuiper Belt is located where?  Beyond Neptune's orbit Studying TNOs allows us to see what the solar system was like 4.5 billion years ago. Why?  TNO's have not changed since the formation of the solar system which allows us to study their composition and determine the early materials of the universe. What must Neptune and Pluto both have in order to have a stable orbit?  Both must have the same precession rate or else Pluto may get tossed out of our solar system by Neptune. What is Pluto's mass compared to Earth's?  0.22% of Earth's mass. Pluto has the same orbital period as what other objects?  Plutinos If TNOs fall onto a plane, their plane seems to differ from the Ecliptic plane by how many degrees?  2-6 degrees Which of Pluto's moons are tidally locked to Pluto?  Sharon What range does the Classical Region cover?  The Classical Region covers 42 AU to 47 AU What is all the same between Pluto or Plutinos?  Same orbital period How many moons does Pluto have?  5 moons What is the average distance of Plutinos from the sun?  39.8 AU What is the largest known TNO?  Pluto How is Pluto's mass compared with the Earth's mass?  Pluto is 0.22% of the Earth's mass How is Pluto's atmosphere changing?  It is becoming thicker because of cryovolcanoes...