Humanities And Community Arts – Solar Nebula Theory – Exceptions To The Rules – Solar System Assignment

Humanities And Community Arts – Solar Nebula Theory – Exceptions To The Rules – Solar System Assignment


1 . Which of the following statements is true?

Select one:

  • Most planets rotate on their axes in roughly the same sense as Jupiter.
  • The Kuiper belt is a collection of asteroid-sized rocky bodies orbiting beyond Saturn.
  • Asteroids are very old and exhibit a range of properties not characteristic of the planets or their moons.
  • Most of the known moons revolve about their parent planet in the opposite direction as the planet rotates on its axis

2.  Which planet would have formed from a planetesimal in which metal had condensed early in its formation?

Select one:

  • Earth
  • Jupiter
  • Saturn
  • Uranus

3. Why was the passing star hypothesis eventually rejected as a plausible explanation for the birth of our solar system?

4. How do the atmospheres of the terrestrial planets compare to the atmospheres of the Jovian planets?

5. Explain the model for the formation of the Jovian planets’ moons.

6. Between which two present-day planetary objects does the frost line lie?

Select one:

  • between the sun and Mercury
  • between Neptune and Pluto
  • between Mars and Jupiter
  • between Earth and Mars

7. Which is the correct order of planetary object class during their formation?

Select one:

  • planetesimals, protoplanets, planets
  • planets, planetesimals, protoplanets
  • planetesimals, planets, protoplanets
  • protoplanets, planetesimals, planets

8. Besides the terrestrial and Jovian planets, what other bodies orbit the sun?

Select one:

  • planet satellites
  • clouds of dust and gas
  • comets and asteroids
  • meteors and meteorites

9. Which lies farthest away from the sun?

Select one:

  • Pluto
  • Neptune
  • Kuiper belt
  • Oort cloud

10. Which is a shared characteristic of both Venus and Uranus?

Select one:

  • They have the same mass.
  • They both have rocky surfaces.
  • They both have a horizontal axis.
  • Their axes have high inclinations.

11. What can we learn by applying comparative analysis to the planets of our solar system?

12. What percentage of the solar nebula is made up of hydrogen and helium gas?

Select one:

  • 2%
  • 76%
  • 98%
  • 100%

13. Summarize the solar nebula theory.

14. What is the eccentricity of the planetary orbits?

Select one:

  • three
  • two
  • near one
  • near zero

15. Why are the planets of the solar system differentiated?

Select one:

  • The light elements in the inner solar system were carried off as comets.
  • The heavy elements in the outer solar system sank to the center.
  • The light elements in the inner solar system fell into the sun.
  • Only rocky and metallic particles could form so near the sun.

16. Which of the planets are classified as terrestrial and which are classified as Jovian? What are the distinct characteristics of these two types of planets? Explain how this distinction occurred during solar system formation.

17. Which statement is correct about solar system densities?

Select one:

  • Denser planets lie closer to the sun.
  • Asteroids all have about the same density.
  • In differentiated bodies, the denser material lies near the surface.
  • Planetary density increases the farther the planet’s distance from the sun.

18. Describe at least two “exceptions to the rules” that we find in our solar system.

19. During which step of solar system formation does the kinetic energy of particles convert to thermal energy?

Select one:

  • condensing
  • flattening
  • spinning
  • heating

20. What are the six steps in the formation of a solar system?

21. What does “planetesimals” actually mean?

Select one:

  • “moon-sized planets”
  • “pieces of planets”
  • “small planets”
  • “planet-ettes”

22. How did the temperature structure of the solar nebula determine planetary composition?

23. Why are astronomers confident of the solar nebula theory?

Select one:

  • Astronomers have located similar disks of matter around other stars.
  • Astronomers have generated numerous experiments proving the theory correct.
  • Astronomers have been unable to come up with any other theory to prove otherwise.
  • Astronomers have found meteorite pieces on Earth that provide evidence of the theory.

24. Where did most of the interplanetary fragments in the outer solar system get flung to by the larger gas planets?

Select one:

  • Kuiper belt
  • Oort cloud
  • asteroid belt
  • as orbiting moons

25. As a rotating gas cloud contracts, it spins faster due to

Select one:

  • gravity.
  • conservation of energy.
  • Newton’s laws of motion.
  • conservation of angular momentum.

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