8.8A H-R Diagram Mini Flashcard 2

Front

What is the Hertzsprung-Russell (H-R) Diagram?

Back

A graphical tool that classifies stars based on their brightness (luminosity) and surface temperature.

Front

What does the term 'luminosity' refer to in the context of stars?

Back

Luminosity is the total amount of energy emitted by a star per unit of time, often compared to the Sun's brightness.

Front

What is the classification of stars that includes the Sun?

Back

The Sun is classified as a Main Sequence star.

Front

What characteristics define a White Dwarf star?

Back

White Dwarfs are small, dense stars that have exhausted their nuclear fuel and are no longer undergoing fusion.

Front

What is a Red Giant star?

Back

A Red Giant is a star that has expanded and cooled, resulting in a lower surface temperature and a greater luminosity.

Front

What is the significance of a star's surface temperature?

Back

A star's surface temperature affects its color, brightness, and classification on the H-R Diagram.

Front

What type of star is typically the hottest and brightest?

Back

Blue Giants are typically the hottest and brightest stars.

Front

How does the luminosity of a Red Giant compare to that of the Sun?

Back

A Red Giant can have a luminosity that is thousands of times greater than that of the Sun.

Front

What is the relationship between temperature and brightness in the H-R Diagram?

Back

Generally, hotter stars are brighter, and this relationship is depicted in the H-R Diagram.

Front

What classification do Supergiant stars fall under?

Back

Supergiant stars are among the largest and most luminous stars, often found at the top of the H-R Diagram.