HR Diagram Presentation Student Notes 25-26

Notebook Setup

Open Ended

Using the HR diagram locate the group of stars labeled Supergiants. The stars in this group are at least 100 times the mass of our Sun. Name a white supergiant star.

Multiple Choice

What does the Hertzsprung Diagram illustrate about stars?

• The relationship between temperature and brightness

• The distance of stars from the Earth

• The age of stars in our galaxy

• The relationship between color and size

Multiple Choice

Which stars have the greatest luminosity (brightness) according to this HR diagram?

• Hot white dwarf stars

  
  

• Hot main sequence stars

  
  

• Cool supergiant stars

  
  

• Cool giant stars

  
  

Fill in the Blanks

​Main Sequence

​Main Sequence

​Main Sequence

Multiple Choice

What type of star is our sun according to the HR diagram?

• White Dwarf

• Red Dwarf

• Red Giant

• Main Sequence

Multiple Choice

What is the color of the stars with the highest surface temperature?

• white

• blue

• orange

• red

Multiple Choice

Which of the following shows the correct order of stars from hottest to coldest?

• red, yellow, white, blue

• red, yellow, white, blue

• blue, white, yellow, red orange, red

• red, yellow, blue, white

Multiple Choice

What is the color of the stars with the lowest surface temperature?

• red

• blue

• white

• yellow

Multiple Choice

In the universe, most stars are classified as which type?

• Supergiants

• Giants

• White Dwarfs

• Main Sequence

Multiple Choice

Which group of stars are the dying or Ancestry stars?

• Main Sequence

• Giants

• Supergiants

• White Dwarfs

Multiple Choice

What does the HR diagram tell us?

• the life cycle of stars

• a star's surface temperature

• how bright a star is

• all of the above

Multiple Choice

The H-R Diagram classifies stars based on what two criteria?

• Brightness and temperature

• Brightness and age

• Temperature and hobbies

• Temperature and color

Multiple Choice

What category of stars is hot, but not very bright?

• Supergiants

• White dwarfs

• Giants

• Main Sequence

Multiple Choice

Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?

• Betelguse
• Sirius B
• Procyon B
• Barnard's star

Multiple Choice

Which star has the lowest temperature?

• A
• B
• C
• D