Star Types

What kind of star would have a spectral class of A and an absolute magnitude of -10?

• Main sequence

• Giants

• Super giant

• White dwarf

Tags

NGSS.HS-ESS1-3

Based on this diagram, which type of stars would belong to spectral class B and have a low luminosity?

• Supergiants

• Giants

• Main Sequence

• White Dwarfs

A newly discovered star was determined to be of similar surface temperature and intrinsic brightness as the sun. Based on the Hertzsprung-Russell diagram in question #1, what is a prediction for the color of this star?

• Blue

• White

• Red

• Yellow

Hertzsprung and Russell based their diagram on scientific evidence. The diagram is very important to the scientific community because it helps astronomers classify stars. Many astronomers use the diagram to-

• learn more about the field of astronomy

• explain how galaxies behave

• determine temperatures of nebulae

• organize information and analyze patterns

Tags

NGSS.HS-PS4-3

Which location on the Hertzsprung-Russell diagram contains the hottest and brightest stars in the universe?

• Location A

• Location B

• Location C

• Location E

Tags

NGSS.HS-ESS1-3

Which component(s) of the universe can be classified by brightness and surface temperature?

• Galaxies only

• Stars only

• Galaxies and stars

• Galaxies, nebulae, and stars

In 1913, a diagram was created that combined the independent works of Danish astronomer Ejnar Hertzsprung and American astronomer Henry N. Russell. How has this astronomic tool furthered scientists' understanding of the universe?

• The diagram allowed scientists to determine a star's distance from Earth by plotting it based on characteristics.

• The diagram allowed scientists to predict when a star would become a supernova based on its luminosity.

• The diagram allowed scientists to identify areas of the universe where stars are clustered together based on characteristics

• The diagram allowed scientists to better understand stars by grouping them with other stars having similar characteristics.

According to the H-R diagram which section of stars only has surface temperatures less Section A?

• Section E only

• Sections B and D

• Sections C and D

• Not here

Which is an example of a Main Sequence star?

• Betelgeuse

• our Sun

• Sirius B

• Polaris

About 80% of all stars in the galaxy are actually

• yellow stars like our Sun & Alpha Centauri A.

• red dwarf stars.

• plotted on the main sequence.

• blue giant stars like Rigel & Bellatrix.

Tags

NGSS.HS-ESS1-3