Solar System Exploration Quiz
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Questions and Answers

Which planet is closest to the sun?

  • Mercury (correct)
  • Saturn
  • Earth
  • Mars

How many confirmed moons does Jupiter have according to NASA?

  • 79
  • 3,743
  • 53 (correct)
  • 0

What are celestial bodies that are made up of metal, rock, or a combination of the two, and orbit the sun?

  • Moons
  • Comets
  • Asteroids (correct)
  • Meteoroids

What is the term used for a meteoroid that survives the atmosphere and hits the ground?

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

Which type of planets do not have a solid surface and are comprised primarily of gases?

<p>Jovian planets (B)</p> Signup and view all the answers

Which planet is thought to have no moons?

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

What is the mnemonic device for remembering the correct order of the planets?

<p>My Very Educated Mother Just Served Us Nachos (D)</p> Signup and view all the answers

What are celestial bodies that float through space and are detailed later in this lesson?

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

What is a key criterion for a celestial body to be designated as a planet?

<p>It must orbit the sun and have a spherical shape due to gravity. (A)</p> Signup and view all the answers

What led to the controversy surrounding the number of planets in the solar system in 2006?

<p>The reclassification of Pluto from a planet to a dwarf planet. (B)</p> Signup and view all the answers

What celestial bodies are part of Earth's solar system?

<p>Moons, asteroids, comets, and meteoroids. (D)</p> Signup and view all the answers

What caused the controversy surrounding the number of planets in the solar system?

<p>The reclassification of Pluto from a planet to a dwarf planet. (C)</p> Signup and view all the answers

What is the primary reason for the evolving definition of a planet?

<p>Scientists' increasing understanding of the solar system, galaxy, and universe. (C)</p> Signup and view all the answers

What distinguishes a celestial body as a planet in terms of its orbit?

<p>Having a clear orbit around the sun and being larger than most celestial bodies in its orbital path. (A)</p> Signup and view all the answers

What is the defining characteristic of a celestial body to be considered a planet?

<p>Having a clear orbit around the sun and a significant gravitational pull shaping it into a sphere. (A)</p> Signup and view all the answers

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