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Hydrogen and Helium
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∙ 13y ago
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What are the two main gases that the sun is made of?
star
When do you say that a star is born?
A star is "born" when the compression of the surrounding hydrogen and other gases has compressed the core of a protostar to about 10 millionoK when nuclear fusion occurs. The star is now on the main sequence and is classified as a star
All the gases which surround a star or a planet?
All the gases which surround a star or a planet
The H-R diagram of a young star cluster shows?
That they all fall on the main sequence.
What distinguishes a nebula and a star?
A nebula is a cloud of substances and gases that can form into a star. A star is a ball of hydrogen and helium with trace amounts of other gases. A supernova is the death of a star.
What gases make the main sequence star?
Hydrogen and Helium
What are the main gases if a star?
Hydrogen and helium
What are the two main gases that the sun is made of?
star
What are The three main gases of a star?
Dance because its my favorite
What two gases are a main sequence star made of?
Hydrogen and helium
What old-main-sequence star will be composed of a higher percentage of helium than a young main-sequene star?
All of them, that's how a star gets to be "old" ... it converts its hydrogen into helium.
When do you say that a star is born?
A star is "born" when the compression of the surrounding hydrogen and other gases has compressed the core of a protostar to about 10 millionoK when nuclear fusion occurs. The star is now on the main sequence and is classified as a star
What is the main predictor of where a star will spend most of the time on the main sequence and why?
The star's mass. More mass will make the star hotter, and will increase the pressure in the center; this will make the star burn its fuel faster.When a star is on the "main sequence", it burns hydrogen-1, converting it into helium-4.
All the gases which surround a star or a planet?
All the gases which surround a star or a planet
How is the moon not a star?
The Moon is not a star because a star is made of a gases.
The H-R diagram of a young star cluster shows?
That they all fall on the main sequence.
When does a protostar becomes a main sequence star?
As the gases in a protostar begin to collapse, the central core begins to heat up due to pressure. As more gases are absorbed, the greater the pressure. Once the temperature of the core reaches 10 million degrees K, hydrogen fusion begins, and the star begins it's life on the main sequence. The star will stay on the main sequence whilst it still has hydrogen to fuse. Once all the hydrogen has been used, the star will drop out of the main sequence. Protostar stage in the stellar evolution. [See related question]
