Life Cycle of a Star Review 2

Flashcard
•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the life cycle of a star?
Back
The life cycle of a star refers to the series of stages a star goes through from its formation in a nebula to its eventual death as a white dwarf, neutron star, or black hole.
2.
FLASHCARD QUESTION
Front
What is a nebula?
Back
A nebula is a giant cloud of dust and gas in space, where star formation begins.
3.
FLASHCARD QUESTION
Front
What happens during the main sequence stage of a star?
Back
During the main sequence stage, a star fuses hydrogen into helium in its core, producing energy that makes it shine.
4.
FLASHCARD QUESTION
Front
What is nuclear fusion?
Back
Nuclear fusion is the process of combining lighter atomic nuclei to form a heavier nucleus, releasing energy in the process.
5.
FLASHCARD QUESTION
Front
What is a red giant?
Back
A red giant is a late stage in the life cycle of a star, where it expands and cools after exhausting its hydrogen fuel.
6.
FLASHCARD QUESTION
Front
What is a white dwarf?
Back
A white dwarf is the remnant core of a low-mass star that has exhausted its nuclear fuel and shed its outer layers.
7.
FLASHCARD QUESTION
Front
How does a star's temperature change as it evolves?
Back
As a star evolves, its temperature can increase or decrease depending on its stage; for example, it gets hotter as it becomes a red giant.
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