H R diagram
Presentation
•
Science
•
9th Grade
•
Practice Problem
•
Medium
Standards-aligned
DJ Moore
Used 3+ times
FREE Resource
18 Slides • 18 Questions
1
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3
Multiple Choice
Why do objects that are closer to us, like the headlights of a car in fog, appear brighter than those farther away?
Because they emit more light
Because the light has less distance to travel and is less scattered
Because our eyes are more sensitive to nearby objects
Because the air is clearer near us
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5
Fill in the Blanks
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Open Ended
Explain why our sun appears to be the brightest star in the sky, even though it is not the most luminous star in the universe.
8
Multiple Choice
What is the main difference between apparent brightness and absolute brightness of a star?
Apparent brightness depends on the distance from Earth, while absolute brightness is the brightness at a standard distance.
Apparent brightness is always greater than absolute brightness.
Absolute brightness depends on the star's color, while apparent brightness does not.
Apparent brightness is measured in parsecs, while absolute brightness is measured in miles.
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10
Multiple Choice
Who created the diagram used to organize star characteristics such as size, temperature, and brightness?
Ejnar Hertzsprung and Henry Norris Russell
Albert Einstein and Isaac Newton
Galileo Galilei and Johannes Kepler
Carl Sagan and Neil deGrasse Tyson
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Multiple Select
Which characteristics are plotted on the axes of an H-R diagram?
Luminosity (absolute brightness)
Star temperature
Star distance from Earth
Star color
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Open Ended
After plotting hundreds of stars on the H-R diagram, what patterns or groupings do you notice?
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Multiple Choice
What is the main sequence in the Hertzsprung-Russell diagram, and how are stars positioned on it?
The middle section where stars are positioned based on color, luminosity, and temperature
The top section where only the brightest stars are found
The bottom section where only the coolest stars are found
A random section with no specific pattern
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Multiple Select
Which of the following statements about main sequence stars is/are correct?
They fuse hydrogen into helium.
They are positioned based on color, luminosity, and temperature.
They are always the brightest stars in the diagram.
All stars spend the majority of their lives in this section.
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Multiple Choice
Humans live their main sequence ( before they start to decline) of their lives until they are about what age?
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60
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Multiple Choice
Explain why stars spend most of their lives in the main sequence section of the Hertzsprung-Russell diagram.
stars in. main sequence fuse are considered black holes
stars in main sequence fuse helium to hydrogen
stars in main sequence fuse hydrogen to helium
stars in main sequence go supernova
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Multiple Choice
What color stars are the brightest according to the Hertzsprung-Russell diagram?
Blue
Red
Yellow
White
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Fill in the Blanks
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Open Ended
Why do small red stars live longer than large blue stars?
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Fill in the Blanks
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Open Ended
Describe the sequence of events that occur as a star evolves after it leaves the main sequence.
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Multiple Choice
Based on the Hertzsprung-Russell diagram, what happens to a star after it runs out of hydrogen to fuse?
It leaves the main sequence and becomes a giant or supergiant
It immediately becomes a white dwarf
It explodes as a supernova
It turns into a planet
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Multiple Select
Which of the following are characteristics of giant and supergiant stars?
High luminosity
Low surface temperature
Short lifespan
Located in the main sequence
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