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Stellar Structure and Evolution Online Flashcards and Quiz
By presenting 3 options to choose from, Stellar Structure and Evolution Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Stellar Structure and Evolution Questions and Answers and click over the correct answer.
- Test Name: Stellar Structure and Evolution MCQ Quiz Practice
- Type: MCQ’s
- Total Questions: 40
- Total Marks: 40
- Time: 40 minutes
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Stellar Structure and Evolution Flashcards
Small, cool, low-mass star
Young, pre-main sequence star with strong stellar winds
What is the role of fusion in stellar interiors?
Generating energy and counteracting gravitational collapse
A collapsing cloud of gas and dust before nuclear fusion ignites
What is the helium flash?
Explosive ignition of helium in a red giant's core
Sudden increase in brightness of a white dwarf
A failed star that never ignites nuclear fusion
How do stars like the Sun eventually end their lives?
As white dwarfs cooling over billions of years
What is the helium flash?
Explosive ignition of helium in a red giant's core
Distance at which tidal forces exceed gravitational forces
What is the role of convection in stellar interiors?
Transporting energy from the core to the surface
What is the Eddington luminosity?
Maximum luminosity a star can have
What is the helium flash?
Explosive ignition of helium in a red giant's core
What is the proton-proton chain?
Nuclear fusion process in stars like the Sun
What is the Hayashi track?
Evolutionary path of a contracting protostar
What is the remnant left after a Type II supernova?
Neutron star or black hole
How are Type Ia supernovae different from Type II supernovae?
Type Ia lack hydrogen lines in their spectra
What causes a star to become a supernova?
Core collapse or thermonuclear explosion
What is the Schwarzschild radius?
Radius of the event horizon of a black hole
A nuclear fusion process in massive stars
What is a white dwarf made of?
Electron-degenerate matter
What is the primary energy source in the later stages of a massive star's life?
Nuclear fusion of heavier elements
A rotating neutron star emitting beams of radiation
What is the event horizon of a black hole?
Boundary beyond which nothing can escape
What is a neutron star primarily composed of?
What causes a supernova explosion?
Collapse of the core in a massive star
How does a star like the Sun eventually die?
What is the fate of a star with a mass greater than about 8 solar masses?
What is a planetary nebula?
A shell of gas ejected by a dying star
What is the Chandrasekhar limit?
Maximum mass for a stable white dwarf
What causes a star to become a red giant?
Depletion of hydrogen fuel in the core
What is the dominant element in a star's core during the main sequence phase?
Which force is responsible for keeping a star in hydrostatic equilibrium?
What process powers the Sun and other main sequence stars?
What is the approximate temperature at the core of the Sun?
What prevents a star from collapsing under its own gravity?
Pressure from nuclear fusion
What is the final stage of stellar evolution for a star like the Sun?
What determines the main sequence lifetime of a star?
Which layer of a star's atmosphere is visible during a solar eclipse?
What is the primary source of energy in stars?
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