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How does a gas cloud become hot enough to ignite nuclear reactions?
Wiki User
∙ 14y ago
Gravitational pressure.
A large mass of gas has a lot of internal gravity, and as it falls together, it gets compressed and heats up. At some point, the gas gets so hot that all the electrons are stripped away from the atomic nuclei, and the gas becomes unimaginably dense and hot - and eventually it gets hot enough that the hydrogen nuclei begin to fuse into helium, generating even more heat and pressure. At that point, the gas cannot be compressed any further, because the energy generated in fusion is pushing the nuclei apart, and the star reaches an equilibrium between the gravitational pressure inward and the radiation pressure outward.
Wiki User
∙ 14y ago
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Which of these develop when gravity pulls gas and dust together with enough pressure to ignite nuclear fusion?
Having some trouble seeing your list of choices from here.But stars do.
Can the moon produce light through internal nuclear combustion?
No. The moon does not produce any light of its own. It only reflects light from the sun. It does not have enough mass to ignite nuclear fusion, nor is it of the right composition. Finally, nuclear fusion and combustion are two completely different processes.
Why are lower-mass stars unable to ignite more massive nuclear fuels such as carbon?
Low-mass stars have little gravitational energy, so when they contract, they don't get very hot.
Why does the hydrogen in the core of the sun not get so hot that it ignites?
It depends on the sense in which you mean it ignites. The sun already ignited nuclear fusion of hydrogen billions of years ago, a reaction which has enough hydrogen fuel to continue for another several billion years. The sun cannot ignite the combustion of hydrogen as there is not enough oxygen to support combustion. At 27 million degrees Fahrenheit, the core of the sun is actually too hot for molecules such as water to exist anyway.
Why don't red dwarfs become giant stars?
Because a red dwarf is mixed by convection, it can't develop an inert helium core surrounded by unprocessed hydrogen. Then it can never ignite a hydrogen shell and can't become a giant star.
Why can't a planet be a star?
A planet does not have enough mass to ignite nuclear fusion.
Stars are born when gravity pulls gas and dust together with enough pressure to ignite nuclear fusion true or false?
True.
Could you ignite Neptune and create a small sun?
No. Neptune is not nearly massive enough to sustain any sort of nuclear reaction akin to the Sun. It simply does not have enough mass.
Do inert gases ignite spontaneously?
No. Inert gasses cannot ignite at all. They very rarely undergo reactions of any sort.
What temperature does jet fuel ignite?
It is enough for a spark to ignite any fuel.
Why doesn't nuclear fusion occur in the core of planets?
not enough heatnot enough pressureA planet roughly 10 times the mass of Jupiter would be just barely big enough to ignite fusion, but it could not sustain it.
Which of these develop when gravity pulls gas and dust together with enough pressure to ignite nuclear fusion?
Having some trouble seeing your list of choices from here.But stars do.
Can the moon produce light through internal nuclear combustion?
No. The moon does not produce any light of its own. It only reflects light from the sun. It does not have enough mass to ignite nuclear fusion, nor is it of the right composition. Finally, nuclear fusion and combustion are two completely different processes.
What would happen if you ignite a nuclear bomb in a volcano?
You get a rather large explosion.
Are stars born when gravity pulls gas and dust together with enough pressure to ignite nuclear fusion?
Yes, stars are born when gravity pulls gas and dust together from a nebula.
What do you mix cornstarch with to get it to ignite?
Sawdust will work if you use enough.
What is the temperature needed to ignite carpet?
hot enough to burn it
