Word Bank: Mass, massive, Neutron, Main Sequence, Luminosity, Temperature, Brightness, Stable, Red Giants, Super Giants, Cepheids, Supernova, Black Holes, Neutrons, White dwarf, HR Diagram, Stable

Stars can be classified according to their surface and their (how brightly they shine)
Most stars fall on the Hertzberg-Russell (HR) diagram.
These stars are relatively .
About 90% of stars are and . which shine brightly but at a low temperature, so with a large volume.
are very hot and small, and don't shine and very brightly.
A group of unstable stars called appear between the main sequence and the red giants.
What happens next to a star depends on its birth .
Very high mass stars can become and they finally either stars or

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Stars can be classified according to their surface Temperature

and their Luminosity (how brightly they shine)

Most stars fall on the Main Sequence Hertzberg-Russell (HR) diagram.

These stars are relatively Stable

About 90% of stars are Red Giants

and Super Giants. which shine brightly but at a low temperature, so with a large volume.

White dwarf are very hot and small, and don't shine and very brightly.

A group of unstable stars called Cepheids appear between the main sequence and the red giants.

What happens next to a star depends on its Mass birth .

Very high mass stars can become Supernova and they finally either Neutron stars or Black Holes

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.