HR-Diagram

Front

What is the HR-Diagram?

Back

The HR-Diagram, or 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 spectral class does our star, the sun, belong to?

Back

The sun belongs to the G spectral class.

Front

What is a giant star?

Back

A giant star is a type of star that has expanded and cooled, resulting in a larger radius and higher luminosity compared to main-sequence stars.

Tags

NGSS.HS-ESS1-3

Front

Which star is considered a giant star?

Back

Mira is considered a giant star.

Front

Are giants generally hotter than white dwarfs?

Back

No, giants are not generally hotter than white dwarfs.

Front

What is a white dwarf?

Back

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

Tags

NGSS.HS-ESS1-1

Front

What is the relationship between a star's temperature and its color?

Back

A star's temperature is related to its color; hotter stars appear blue or white, while cooler stars appear red or orange.

Front

What is the spectral class of a star?

Back

The spectral class of a star is a classification system that categorizes stars based on their temperature, color, and spectral characteristics.

Front

Which star is hotter than Deneb?

Back

Regel is hotter than Deneb.

Front

What is luminosity in the context of stars?

Back

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

Tags

NGSS.HS-ESS1-1