Front

What is the H-R Diagram?

Back

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

Front

What type of star is our sun?

Back

Our sun is classified as a main sequence star.

Front

What are the characteristics of a red supergiant star?

Back

Red supergiants are large, luminous stars that are cooler than white dwarfs, with lower surface temperatures but higher luminosities.

Front

Which type of star has a longer lifespan: a main sequence star or a blue giant?

Back

A main sequence star has a longer lifespan compared to a blue giant.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low to medium mass star after it has exhausted its nuclear fuel.

Front

What is the temperature range of red giants?

Back

Red giants typically have surface temperatures ranging from about 2,200 to 4,000 Kelvin.

Front

What does the position of a star on the H-R Diagram indicate?

Back

The position of a star on the H-R Diagram indicates its temperature, luminosity, and evolutionary stage.

Front

What are blue giants?

Back

Blue giants are very hot, massive stars that are much brighter than the sun and have high surface temperatures, typically over 10,000 Kelvin.

Front

What is the significance of the main sequence on the H-R Diagram?

Back

The main sequence is where stars spend most of their lives, fusing hydrogen into helium in their cores.

Front

What type of stars are found at the bottom left of the H-R Diagram?

Back

The bottom left of the H-R Diagram is typically occupied by hot, luminous stars, including blue giants.