What is the Main Sequence in the HR Diagram?
Universe & HR Diagram, STARs REVIEW

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Main Sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Most stars, including the Sun, are found in this region.
2.
FLASHCARD QUESTION
Front
What is the relationship between a star's temperature and its brightness?
Back
The hotter the star, the more brightly it burns. This means that temperature and brightness are directly related.
3.
FLASHCARD QUESTION
Front
What are the stages in the life cycle of a star?
Back
The stages are: Nebula, Protostar, Average Star, Red Giant, and White Dwarf.
4.
FLASHCARD QUESTION
Front
What are the three main types of galaxies?
Back
The three main types of galaxies are Spiral, Irregular, and Elliptical.
5.
FLASHCARD QUESTION
Front
How does a star's size affect its life cycle?
Back
Larger stars have shorter life cycles and evolve into supernovae, while smaller stars like the Sun have longer life cycles and end as white dwarfs.
6.
FLASHCARD QUESTION
Front
What is a nebula?
Back
A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.
7.
FLASHCARD QUESTION
Front
What is a protostar?
Back
A protostar is a young star that is still in the process of forming, where the material is collapsing under gravity.
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