3. The debris from the death of a high-mass star creates a _______________ a number of light years throughout.
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7. Carbon have the right to be converted right into oxygen in the cores of high-mass stars if carbon nuclei undergo a _______________.
How execute the properties of long-lived stars compare to those of short-lived stars?- Long-lived stars start their resides via more mass and also a larger amount of hydrogen fuel.- Long-lived stars begin their stays through less mass and a smaller amount of hydrogen fuel.- Long-lived stars are even more luminous during their main-sequence resides.- Long-lived stars are less luminous throughout their main-sequence lives.
Long-lived stars start their lives via much less mass and a smaller sized amount of hydrogen fuel.Long-lived stars are much less luminous in the time of their main-sequence lives.
A main-sequence star twice as huge as the Sun would last __________.-around half as long as the Sun-a lot much less than half as lengthy as the Sun-about twice as long as the Sun-much much longer than twice as long as the Sun
If stars A and also B are both main-sequence stars and star A has actually a better fusion rate than star B, which of the following statements hold(s)?-Star A should be even more luminous than star B.-Star A must be much less luminous than star B.-Star A should be more substantial than star B.-Star A have to be less enormous than star B.
Our Sun is taken into consideration to be a ______.-intermediate-mass star-high-mass star-brown dwarf-low-mass star
Which of the following types of information carry out evidence that helps us understand the life tracks of low-mass stars?-H-R diagrams of open clusters-spacecraft observations of the Sun-H-R diagrams of globular clusters-observing a low-mass star over many type of years
Why is a 1 solar-mass red giant even more luminous than a 1 solar-mass major sequence star?-The red giant"s surconfront is hotter.-The red gigantic is even more huge.-Fusion reactions are producing power at a better price in the red huge.-The red giant has a hotter core.
Which of the following defines a star via a hydrogen-burning shell and also an inert helium core?-It is a red huge that grows in luminosity until it dies in a planetary nebula.-It is a subhuge that grows in luminosity till helium fusion starts in the main core.-It is a sublarge that slowly grows dimmer as its hydrogen-burning shell increases and cools.-It is what is well-known as a helium-burning star, which has both helium fusion in its core and hydrogen fusion in a shell.
Which of the complying with observations would not be likely to carry out information about the final, explosive stperiods of a star"s life?-neutrino detections from adjacent supernovae-observing the frameworks of planetary nebulae-researching the light rings roughly Supernova 1987A in the Large Magellanic Cloud-years of continuous security of red giants in a globular cluster
Which is even more common: a star blows up as a supernova, or a star develops a planetary nebula/white dwarf system?-Planetary nebula formation is even more widespread.-Supernovae are more common.-It is difficult to say.-They both happen in around equal numbers.
Carbon fusion happen in high-mass stars yet not in low-mass stars because _________.-only high-mass stars perform fusion by the CNO cycle-carbon fusion can occur just in the stars known as carbon stars-the cores of low-mass stars never contain considerable amounts of carbon-the cores of low-mass stars never gain warm enough for carbon fusion
Which of the complying with statements about miscellaneous steras of core nuclear burning (hydrogen, helium, carbon, etc.) in a high-mass star is not true?-As each stage ends, the reactions that occurred in previous steras continue in shells roughly the core.-As each phase ends, the core shrinks and heats additionally.-Each succeeding stage lasts for approximately the very same amount of time-Each successive phase creates an element through a greater atomic number and also atomic mass number.
Which event marks the start of a supernova?-The onset of helium burning after a helium flash.-The sudden collapse of an iron core right into a compact ball of neutrons.-The sudden initiation of the CNO cycle.-The beginning of neon burning in a really huge star.
Suppose that the star Betelgeusage (the top left shoulder of Orion) were to supernova tomorrow (as seen here on Earth). What would certainly it look like to the naked eye?-We"d view a cloud of gas broadening away from the place wbelow Betelgeuse supplied to be. Over a period of a few weeks, this cloud would certainly fill our whole skies.-Because the supernova destroys the star, Betelgeuse would certainly unexpectedly disappear from watch.-Betelgeusage would remain a dot of light, however would all of a sudden come to be so bideal that, for a couple of weeks, we"d be able to view this dot in the daytime.-Betelgeuse would suddenly appear to prosper larger in dimension, shortly reaching the size of the full Moon. It would certainly additionally be around as bappropriate as the full Moon.
Betelgeuse would certainly remain a dot of light, yet would certainly unexpectedly become so bappropriate that, for a couple of weeks, we"d be able to view this dot in the daytime.
Suppose that hydrogen, rather than iron, had the lowest mass per nuclear pwrite-up. Which of the adhering to would be true?-All stars would certainly be red giants.-Stars would certainly be brighter.-Stars would be much less substantial.-Nuclear fusion could not power stars.
Observations present that elements with atomic mass numbers divisible by 4 (such as oxygen-16, neon-20, and magnesium-24) tfinish to be more numerous in the universe than elements through atomic mass numbers in in between. Why execute we think this is the case?-Elements via atomic mass numbers divisible by 4 tfinish to be more secure than aspects in between.-At the end of a high-mass star"s life, it produces new elements with a collection of helium capture reactions.-The evident pattern is thmust be a random coincidence.-This pattern in elepsychological abundances was apparently figured out in the time of the first few minutes after the Big Bang.
At the end of a high-mass star"s life, it produces brand-new aspects with a series of helium capture reactions.
A spinning neutron star has actually been oboffered at the center of a ______.-protostar-planetary nebula-supernova remnant-red supergiant
You discover a binary star system in which one star is a 15 MSun main-sequence star and also the other is a 10 MSun large. How execute we think that a star device such as this might have pertained to exist?-The large need to as soon as have been the more huge star, but is currently much less enormous bereason it transferred some of its mass to its companion.-Although both stars most likely created from the same clump of gas, the even more enormous one should have actually had its birth slowed so that it ended up being a primary sequence stars numerous years later on than its much less huge companion.-The two stars are simply evolving normally and also independently, and one has actually end up being a giant before the various other.-The two stars most likely were when sepaprice, however ended up being a binary when a cshed enrespond to permitted their common gravity to pull them together.
The large should once have been the more substantial star, yet is now much less massive bereason it transferred some of its mass to its companion.
Tidal pressures are incredibly important to the Algol device this particular day, but were not vital when both stars were still on the primary sequence. Why not?Main sequence stars are also huge to be affected by tidal forces.Key sequence stars are uninfluenced by tidally-induced mass move.Main sequence stars in a mechanism like the Algol mechanism are small compared to their physical separation.Key sequence stars are too huge to be impacted by tidal forces.
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Key sequence stars in a mechanism favor the Algol system are tiny compared to their physical separation.
(119) From Chapter 9.2, define exactly how and also why the solidification age of a planetary surchallenge is pertained to the number of affect craters on the surface. (HW)
Our Sun is the many essential star for us, of course. The Milky Way has around 100 billion stars. How does our Sun compare through those stars?
what will a third observer watch if they have the right to observe the atom without the blackbody being everywhere in their area of view?
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