9.A 2 solar mass neutron star is roughly the same size as a. the Sun. b. Illinoi
ID: 160557 • Letter: 9
Question
9.A 2 solar mass neutron star is roughly the same size as
a. the Sun.
b. Illinois
c. Urbana/Champaign metropolis
d. the Earth
13.The core of a massive star at the end of its life is sort of like an onion's layers. Why is it so different than a low-mass star?
a. Larger radii allow for more layers
b. More mass allows for more elements to be present.
c. Gravity heats the core to higher and higher temperatures.
d. There is no real difference.
15.Right now the Sun is in equilibrium (called hydrostatic equilibrium). What is in equilibrium with what? Select one:
a. Gravity and fusion
b. Gravity and supersonic expansion
c. Gravity and pressure
d. Gravity and water vapor
16.A red giant is Select one:
a. fusing up until iron in its core, and has layers of fusion around the core.
b. fusing He in the core, and has H fusion in a shell around the core.
c. not fusing at all, so it is off the main sequence.
d. not fusing in the core, and has H fusion in a shell around the core.
e. fusing H in the core only.
35.Rank from lowest to highest the final state of a star based on the original mass of the star. Select one:
a. Neutron Star, White Dwarf, Black hole
b. Neutron Star, Black hole, White Dwarf
c. White Dwarf, Neutron Star, Black hole
d. Black hole, White Dwarf, Neutron Star
e. Red Giant, Super-red Giant, Super-blue Giant
Question 12 In the image below, which star(s) is(are) on the main sequence? Not yet answered Marked out of 1.00 Flag question Edit question Alnilam Antares Arcturus Luminosity HR 5337 10 Sirius B 10 Spectral Type Select one: a. O b. B, C, D, and E O c. A and C O e. C and DExplanation / Answer
13. More massive star is able to produce more elements and leads to the fusion at the deser core. This resembles like onion layering. Hence, the correct option is (b).
15. Gravitational force balanced by the pressure is said to be hydrostatic equilibrium. Hence, the correct option is (c).
16. Red giant involves in fusing hydrogen into helium in shell and fusing helium into carbon in core. Hence, the correct option is (b).
35. Black hole has the highest mass than the neutron star and white dwarf. White dwarf has the least mass and nuetron star has the medium mass. Hence, the correct option is (c).
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