5.2 Properties of Stars Quiz

What is the Hertzsprung-Russell diagram (HR diagram)?

• A map of the stars in our galaxy

• A diagram showing the relationship between a star's luminosity and temperature

• A diagram showing the relationship between a star's size/mass and distance

• A chart showing the evolution of galaxies over time

Identify the different types of stars based on their position on the graph.

a

b

c

d

Main Sequence Stars

Red Giants

Supergiants

White Dwarfs

Blue stars are _______________ than red stars.

• more dense

• less luminous

• hotter

• further away

Match the terms to their correct definitions:

• Luminosity

• The brightness of a star as seen from its actual distance from Earth

• Absolute Magnitude

• The total amount of energy a star gives off

• Apparent Magnitude

• The brightness of a star if all stars were the same distance from Earth

What information does an HR diagram NOT tell us about stars?

• Luminosity

• Temperature

• Distance from Earth

• Type of star

The absolute magnitudes listed indicate that the least luminous star in the table is ______.

• The Sun

• Rigel

• Sirius

• Pollux

Using the information in the chart: which of the following stars would appear the brightest when seen from Earth?

• Betelgeuse

• Sirius

• Alpha Centauri

• Rigel

Where would you expect to find a star that is very bright but cool in temperature?

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Where would you find stars that are going to have relatively SHORT LIFESPANS due to their EXTREMELY HIGH ENERGY AND MASS?

At which location on the diagram does a star spend most of its life (fusing hydrogen into helium)?