HR Diagram

Flashcard
•
Science
•
8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the main purpose of the H-R diagram?
Back
The H-R diagram is used to classify stars based on their luminosity, temperature, and evolutionary stage.
2.
FLASHCARD QUESTION
Front
What does the x-axis of an H-R diagram represent?
Back
The x-axis represents the temperature of stars, typically measured in Kelvin.
3.
FLASHCARD QUESTION
Front
What does the y-axis of an H-R diagram represent?
Back
The y-axis represents the luminosity of stars, often expressed in terms of the Sun's luminosity.
4.
FLASHCARD QUESTION
Front
What type of stars are found in the upper left corner of the H-R diagram?
Back
The upper left corner contains hot, luminous stars, often referred to as blue giants.
5.
FLASHCARD QUESTION
Front
What type of stars are found in the lower right corner of the H-R diagram?
Back
The lower right corner contains cool, dim stars, known as red dwarfs.
6.
FLASHCARD QUESTION
Front
What is a main sequence star?
Back
A main sequence star is a star that is in the stable phase of hydrogen burning, found along the diagonal band of the H-R diagram.
7.
FLASHCARD QUESTION
Front
What happens to a star's temperature as it moves left on the H-R diagram?
Back
As a star moves left on the H-R diagram, its temperature increases.
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