unit 5 basketball review
TRANSCRIPT
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UNIT 5Stars and Galaxies
Basketball Review
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QUESTION 1• The standard distance astronomers
have adapted when calculating absolute visual magnitude is
A. 1 pcB. 10 pcC. 100 pcD. 1000 pc
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QUESTION 2• The total energy a star radiates in one
second is know as itsA. FluxB. TemperatureC. RadiationD. Luminosity
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QUESTION 3• Where are white dwarfs located on
the HR diagram?A. CenterB. Upper leftC. Lower leftD. Lower right
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QUESTION 4• The most common place on the HR
diagram is which section of stars?A. SupergiantsB. GiantsC. Main-sequenceD. White dwarfs
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QUESTION 5• Compared to the Balmer lines of Hydrogen
in the spectra of a supergiant star, a main-sequence star consists of Balmer lines that are considerably
A. broaderB. narrowerC. strongerD. weaker
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QUESTION 6• Which of the following Roman
Numerals is representative of the luminosity class for a giant star?
A. IbB. IIIC. VD. VII
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QUESTION 7• What percentage of stars in our
Milky Way galaxy are binary stars?A. < 1%B. 10%C. 25%D. > 50%
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QUESTION 8• Which of the following is not a type
of binary star system?A. VisualB. StellarC. SpectroscopicD. Eclipsing
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QUESTION 9• What marks the first stage of a star’s
development, only detectable at IR wavelengths?
A. nebulaB. protostarC. main-sequenceD. dwarf
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QUESTION 10• Stars below _____ do not get hot
enough to ignite nuclear fusion and are known as brown dwarfs.
A. 0.01 M8
B. 0.08 M8
C. 0.15 M8
D. 1.04 M8
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QUESTION 11• Which of the following is not one of
the laws of stellar structure?A. Hydrostatic equilibriumB. Convection coefficientC. Energy transportD. Conservation of mass
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QUESTION 12• Which of the following star groups
has the longest lifetime?A. Red dwarfsB. Mid main-sequenceC. GiantsD. Supergiants
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QUESTION 13• The lifetime expectancy of our Sun isA. 5 million yearsB. 10 million yearsC. 5 billion yearsD. 10 billion years
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QUESTION 14• When a gas is so dense its electrons
are no longer free to change their energy, astronomers refer to it as
A. Instable matterB. Degenerate matterC. Invisible matterD. Dark matter
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QUESTION 15• Helium fusion into Carbon during the
Red Giant stage of a star is also referred to as the
A. Carbon-Nitrogen-Oxygen CycleB. Beta Particle SynthesisC. Thermonuclear CarbonationD. Triple Alpha Process
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QUESTION 16• The onset of Helium fusion occurs
very quickly in an event known as aA. Hydrogen disposalB. Red Giant initiationC. Helium flashD. Nova explosion
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QUESTION 17• When a dying giant star expels its outer
atmosphere in repeated surges, a _____ is likely to result; also considered to “final breath” of medium-mass stars.
A. Nova explosionB. White dwarfC. Planetary nebulaD. Supernova
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QUESTION 18• A star’s collapsing core more massive
than 1.4 M8 cannot become a white dwarf because this represents the
A. Event HorizonB. Chandrasekhar LimitC. Singularity PointD. Mass Boundary
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QUESTION 19• During the evolution of binary starsA. Mass remains with the larger star throughout
the duration of its life.B. The two stars will combine forming a massive
supernova.C. A transfer of mass occurs repeatedly between
the two stars.D. Both stars collide and ultimately form a black
hole.
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QUESTION 20• Heavy element fusion ends with
what element being produced?A. IronB. SiliconC. CarbonD. Neon
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QUESTION 21• Which nebula is a supernova
remnant?A. CrabB. HelixC. HourglassD. Cat’s Eye
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QUESTION 22• What is the main difference between a Type I
and a Type II supernova?A. Type I are visible for a shorter amount of time
than Type IIB. Type II are more intense than Type IC. Type I have spectra containing no Hydrogen
linesD. Type II have no spectra produced due to their
high intensity
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QUESTION 23• Spinning neutron stars are known asA. neutrinosB. jetsC. pulsarsD. radials
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QUESTION 24• The upper mass limit for the
collapsing core of a neutron star isA. 1.4 M8
B. 2.1 M8
C. 3.0 M8
D. 4.7 M8
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QUESTION 25• Which of the following is not a type
of galaxy?A. SpiralB. EllipticalC. SphericalD. Irregular