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.
100
How many main groups are classified into the stars?
7 main groups
200
How is the star's luminosity related to the star's mass?
Luminosity is dependent on mass.
200
What stars are the most and least luminous?
The blue giants are the most luminous and the red dwarfs are the least luminous.
300
What is the temperature of one of the hottest stars?
about 50,000 Kelvin
300
What is the surface temperature of our sun?
6000 Kelvin.
400
How can you tell which star is the hottest?
By the star's color.
400
What color spectrum does our sun mainly radiate?
It radiates the yellow part of the spectrum.
500
What color is the hottest and coldest star?
Blue and red.
500
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.
M
e
n
u