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Questions and Answers
What two characteristics of stars are used in the H-R diagram?
What two characteristics of stars are used in the H-R diagram?
What factor affects the color of a star?
What factor affects the color of a star?
Temperature
What factor affects the brightness of a star?
What factor affects the brightness of a star?
Temperature
93% of all stars on the H-R diagram are what type of stars?
93% of all stars on the H-R diagram are what type of stars?
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As a star's temperature increases, the star's brightness ___
As a star's temperature increases, the star's brightness ___
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Which color is the hottest color?
Which color is the hottest color?
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Which color is the coolest color?
Which color is the coolest color?
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What is the approximate temperature of the sun?
What is the approximate temperature of the sun?
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What is another word for brightness?
What is another word for brightness?
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Study Notes
Hertzsprung-Russell Diagram Overview
- The H-R diagram plots stars based on their temperature and luminosity.
- It is a crucial tool in understanding stellar properties and classifications.
Star Characteristics
- Stars are characterized primarily by their temperature and luminosity (brightness).
- The temperature of a star significantly influences its color.
Temperature and Color
- A star's temperature directly correlates with its color, affecting perception and classification.
- Blue is the hottest color of a star, indicating high temperature.
- Red is the coolest color, signifying lower temperatures.
Star Brightness
- Brightness, or luminosity, of a star is also influenced by its temperature.
- As a star's temperature increases, its brightness correspondingly increases.
Star Classification
- Approximately 93% of stars in the H-R diagram fall into the main-sequence category.
- The sun has an approximate surface temperature of 6000˚C, placing it within the main-sequence stars.
Synonyms
- Luminosity is another term for brightness and plays a key role in star identification.
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Description
Test your knowledge of the Hertzsprung-Russell diagram with these flashcards. Learn about the key characteristics of stars, including temperature and luminosity, and how they relate to the diagram. Perfect for astronomy enthusiasts looking to deepen their understanding!
