What is the HR Diagram?
HR Diagram Flashcard

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Science
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Hertzsprung-Russell Diagram (HR Diagram) is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.
2.
FLASHCARD QUESTION
Front
What does the position of a star on the HR Diagram indicate?
Back
The position of a star on the HR Diagram indicates its temperature, luminosity, and evolutionary stage.
3.
FLASHCARD QUESTION
Front
Where are the hottest stars located on the HR Diagram?
Back
The hottest stars are located on the left side of the HR Diagram.
4.
FLASHCARD QUESTION
Front
Where are the coolest stars located on the HR Diagram?
Back
The coolest stars are located on the right side of the HR Diagram.
5.
FLASHCARD QUESTION
Front
What is luminosity in the context of stars?
Back
Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.
6.
FLASHCARD QUESTION
Front
How does the brightness of a star relate to its distance from Earth?
Back
A star's brightness as seen from Earth (apparent brightness) decreases with distance; a star can be very luminous but appear dim if it is far away.
7.
FLASHCARD QUESTION
Front
What type of star is Rigel?
Back
Rigel is a blue supergiant star, known for its high luminosity and temperature.
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