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What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
What chemical is more abundant the older a star is?
As a star ages, it fuses hydrogen into helium in its core. Therefore, helium becomes more abundant in older stars compared to younger stars.
Why does the amount of hydrogen in a star decrease over time?
The amount of hydrogen in a star decreases over time because the star fuses hydrogen into helium in its core through the process of nuclear fusion. This conversion of hydrogen into helium releases energy that powers the star and results in a gradual depletion of its hydrogen fuel source.
True or false a main sequence star generates energy by fusing helium into hydrogen?
Oops ! No. The statement is going along pretty good until the end.The star actually fuses hydrogen into helium .
What 7 stages are in the life of a star?
Nebula - a cloud of gas and dust in space. Protostar - a contracting cloud of gas and dust with increasing temperature and pressure. Main Sequence Star - a stable phase where a star fuses hydrogen into helium in its core. Red Giant - a phase where a star expands and cools after exhausting its hydrogen fuel. Helium Burning - a phase where helium fuses into heavier elements in the core. Planetary Nebula - a phase where a star sheds its outer layers into space. White Dwarf - a hot, dense remnant of a star that has burned out.
What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
What does a star do for 90 percent of its life?
For about 90% of a star's existence, it fuses hydrogen into helium, producing lots of heat. When the hydrogen starts to become depleted and the helium "ash" starts building up, the star may expand into a red giant, in which it fuses helium into carbon and heavier elements.
What chemical is more abundant the older a star is?
As a star ages, it fuses hydrogen into helium in its core. Therefore, helium becomes more abundant in older stars compared to younger stars.
Why does the amount of hydrogen in a star decrease over time?
The amount of hydrogen in a star decreases over time because the star fuses hydrogen into helium in its core through the process of nuclear fusion. This conversion of hydrogen into helium releases energy that powers the star and results in a gradual depletion of its hydrogen fuel source.
Why does the amount of hydrogen in a star decrease?
The amount of hydrogen in a star decreases over time because hydrogen fuses into helium through nuclear reactions in the star's core, releasing energy in the process. As the star continues burning hydrogen, it eventually exhausts its hydrogen fuel supply, leading to changes in its structure and behavior.
Can a red dwarf burn hydrogen?
A red dwarf fuses hydrogen into helium, just like any star, albeit at a very conservative rate.
Why would an older main sequense star be composed of a higher percentage of helium than a young main sequence star?
A star's nuclear fusion reaction converts hydrogen into helium, and generates energy through this process. A "new" star has a fairly low percentage of helium, but over the course of billions of years, it fuses the hydrogen "fuel" into helium "ash".
What assists the star to give its own heat and light?
because the star burns and fuses hydrogen and helium (like the sun) making heat an light
What is the name for the portion of a star's life cycle when it uses hydrogen for fuel?
The portion of a star's life cycle when it uses hydrogen for fuel is called the main sequence stage. During this stage, the star fuses hydrogen to form helium in its core, releasing energy in the process. This is the longest and most stable stage in a star's life.
True or false a main sequence star generates energy by fusing helium into hydrogen?
Oops ! No. The statement is going along pretty good until the end.The star actually fuses hydrogen into helium .
What 7 stages are in the life of a star?
Nebula - a cloud of gas and dust in space. Protostar - a contracting cloud of gas and dust with increasing temperature and pressure. Main Sequence Star - a stable phase where a star fuses hydrogen into helium in its core. Red Giant - a phase where a star expands and cools after exhausting its hydrogen fuel. Helium Burning - a phase where helium fuses into heavier elements in the core. Planetary Nebula - a phase where a star sheds its outer layers into space. White Dwarf - a hot, dense remnant of a star that has burned out.
What is a medium size yellow star composed mostly of hydrogen and helium?
All stars are composed mostly of hydrogen. The star fuses hydrogen into helium. The helium cannot escape the start until the end of the star's life cycle. Thus a middle-aged, medium sized star will be comprised of hydrogen and helium. As the star ages, it may start to fuse helium at its core into carbon. At this point it will likely expand into a red giant star, and thus would no longer be yellow.
