What is the H-R Diagram?
H-R Diagram and Life Cycle of Stars Review

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Science
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9th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Hertzsprung-Russell (H-R) 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 are the main regions of the H-R Diagram?
Back
The main regions of the H-R Diagram include the Main Sequence, Red Giants, Supergiants, and White Dwarfs.
3.
FLASHCARD QUESTION
Front
What is a Main Sequence star?
Back
A Main Sequence star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.
4.
FLASHCARD QUESTION
Front
What is a Red Giant?
Back
A Red Giant is a late stage in a star's life cycle where it has exhausted the hydrogen in its core and has expanded and cooled.
5.
FLASHCARD QUESTION
Front
What is a White Dwarf?
Back
A White Dwarf is the remnant core of a star that has shed its outer layers, typically very hot but small and dense.
6.
FLASHCARD QUESTION
Front
What is a Supernova?
Back
A Supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting in the formation of a neutron star or black hole.
7.
FLASHCARD QUESTION
Front
What is a Neutron Star?
Back
A Neutron Star is the collapsed core of a massive star that has undergone a supernova explosion, composed almost entirely of neutrons.
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