Life Cycle of a Star and H-R Diagram GN

Front

What is the life cycle of a low mass star?

Back

A low mass star goes through the following stages: Nebula -> Main Sequence -> Red Giant -> Planetary Nebula -> White Dwarf -> Black Dwarf.

Front

What is the H-R Diagram?

Back

The Hertzsprung-Russell (H-R) Diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What happens to a low mass star after the main sequence?

Back

After the main sequence, a low mass star becomes a red giant.

Front

Which type of star is always hotter: a blue star or a yellow star?

Back

A blue star is always hotter than a yellow star.

Front

What is luminosity in relation to stars?

Back

Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.

Front

How does the radius of a star affect its luminosity?

Back

In general, as the radius of a star increases, the luminosity increases.

Front

What does it mean if a star is located in the center of the H-R diagram?

Back

A star in the center of the H-R diagram would have medium luminosity.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, characterized by a large radius and a cooler temperature compared to its earlier stages.

Front

What is a black dwarf?

Back

A black dwarf is a theoretical stellar remnant that occurs when a white dwarf has cooled sufficiently that it no longer emits significant heat or light.

Front

What is the relationship between temperature and color in stars?

Back

In general, the color of a star indicates its temperature; blue stars are hotter, while red stars are cooler.