Astronomy 121|99 Final Quiz Questions Well And Correctly Answered|2024
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Astronomy 121
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Astronomy 121
14) Describe four ways in which earth is unique among the terrestrial worlds, and how each is important to life. - ️️Surface liquid water
Atmospheric oxygen
Plate tectonics
Climate stabilty
3 key processes that led the solar system to form spinning disk - ️️Heating, Spinning, Flattening...
14) Describe four ways in which earth is unique among the terrestrial worlds, and how each is important
to life. - ✔ ✔ Surface liquid water
Atmospheric oxygen
Plate tectonics
Climate stabilty
3 key processes that led the solar system to form spinning disk - ✔ ✔ Heating, Spinning, Flattening
4 categories of materials in the solar nebula by their condensation properties and abundance - ✔ ✔
Hydrogen/Helium - 98%
Hydrogen Compounds - 1.4%
Rock - .4%
Metals - .2%
Based on figure 7.48, summarize the roles of planetary size and distance from the sun in explaining the
histories of the terrestrial worlds. - ✔ ✔ Earth habitable because large enough to remain geologically
active and located at a distance from the sun where oceans are able to form
Briefly describe how differences in composition among the jovian planets can be traced to their
formation. - ✔ ✔ Differ in the relative proportions of hydrogen compounds, those further from the
sun capture less H and He, more rock, metal, and H compounds
Briefly describe how we categorize jovian moons by size. What is the origin of most of the medium and
large moons? What is the origin of many of the small moons? - ✔ ✔ Medium and large- rival smallest
planets in size and geological interest (orbital pattern)
small- captured asteroids and comets (no orbital pattern)
Briefly describe jupiters cloud layers. How do the cloud layers help explain jupiters colors? Why are
Saturn's colors more subdued? Why are uranus and neptune blue? - ✔ ✔ 3 types of clouds (at
different altitudes) - ammonium hydrosulfide (brown and red) mid layer clouds
Saturn layers occur deeper more subdued
Uranus, Neptune - methane gas (blue)
, Briefly describe jupiters weather patterns and contrast them with those on the other jovian planets.
What is the great red spot? - ✔ ✔ Bands of rising (white) and falling (reddish brown) air, Saturn and
Neptune also banned- strong winds
great red spot- giant hurricane, circulate around high pressure
Briefly describe key facts about the solstices and equinoxes. - ✔ ✔ Solstice - when northern
hemisphere gets most (summer) and least light (winter)
Equinox - when northern hemisphere gets towards and away from the light
Briefly describe pluto. Why wont it collide with neptune? How do we expect eris and other
large kuiper belt objects to compare to pluto? - ✔ ✔ Smaller, icier and more distant than any
planets.
Briefly describe the evidence suggesting that an impact caused the mass extinction that killed off the
dinosaurs. How might the impact have led to the mass extinction? - ✔ ✔ Evidence of crater and
iridium rich sediment layer occurred around the same time as the extinction
force of hundred million hydrogen bombs, fires, dust and smoke blocking sunlight, acid rain
Briefly describe the four major features of our solar system that provide clues to how it formed. - ✔ ✔
-Patterns of motion among large bodies
-Two major types of planets
-Asteroids and Comets
-Exceptions to the rules
Briefly describe the interior structure of jupiter and explain why it is layered in this way. How do the
other jovian planets compare to that of jupiter? - ✔ ✔ Never a solid surface, ever-denser and hotter
H/He
Briefly describe the layout of the solar systems as it would appear from beyond the orbit of Neptune. -
✔ ✔ Mercury, Venus, Earth, Mars, Jupiter, Uranus, Neptune
Kuiper and Oort belts
Briefly describe the moon's cycle of phases. Can you ever see a full moon at noon? Explain. - ✔ ✔ (29
1/2 days) First quarter moon at noon, full, gibbous, crescent, etc. phase directly relates to time
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