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stars
stars 2
100
What is hydrodynamic equilibrium?
What is hydrodynamic equilibrium? During the main sequence of a star, the cloud collapses due gravity. The compressed gas inside a star along with the radiative pressure will reach the equilibrium with the gravitational effect. It prevents the collapse from going any further. In more simple form it is the reaction of the star during the main sequence.
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How many main groups are classified into the stars?
7 main groups
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How is the star's luminosity related to the star's mass?
Luminosity is dependent on mass.
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What stars are the most and least luminous?
The blue giants are the most luminous and the red dwarfs are the least luminous.
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What is the temperature of one of the hottest stars?
about 50,000 Kelvin
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What is the surface temperature of our sun?
6000 Kelvin.
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How can you tell which star is the hottest?
By the star's color.
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What color spectrum does our sun mainly radiate?
It radiates the yellow part of the spectrum.
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What color is the hottest and coldest star?
Blue and red.
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What is the lifetime of a massive star and why?
The lifetime of a massive star is about 1 to 3 million years because it uses so many of its elements at once to stay alive.