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When the core of a star reaches 10000 K pressure within the star is so great that nuclear fission of hydrogen begins.?
Wiki User
∙ 8y ago
It's fusion, not fission. And you won't get fusion at ten thousand kelvin. You need a much higher temperature - a few million kelvin.
Wiki User
∙ 8y ago
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How sun is a source of nuclear energy?
The Sun produces its energy - the heat and light that reaches us from the Sun - from nuclear fusion. Specifically, it converts hydrogen to helium.
Does the sun have internal energy?
The sun consist primarily of a collection of hydrogen (about 75% of the mass of the sun). This energy is fused, or burned, into helium by the pressure of the weight (gravity) of the sun. This conversion of hydrogen into helium will go on for most of the sun's life time. This nuclear reaction can be thought of as the sun's internal energy.
Why hot is the sun?
The Sun is hot because of the heat generated by nuclear fusion. Albeit a small amount.The Sun was created by a nebula of cloud of dust and gas. Gravity pulls the dust and gas into a ball, where the internal pressure reaches over 10 million Kelvin, hot enough to start fusion of hydrogen.Fusion is the process of joining two nuclei together which, in the sun's place, is hydrogen nuclei, thus creating intense heat that turns the hydrogen gas to plasma, a state of matter where electrons are ripped off atoms.The hydrogen is the "fuel" of the sun, and if the sun runs out of hydrogen it will die in an explosive process known as nuclear flash.The waste product of the of hydrogen nuclei is helium, and it's building up in the sun until it dies.The sun is an example of what is called a breeder reactor; it uses both fusion and fission reactions to create energy. The hydrogen atoms get compressed (fusion) at the core of the sun into helium atoms, and then as the helium atoms move outwards, they split again (fission) into hydrogen atoms.This means that the sun is very efficient; if it used just fusion reactions or fission reactions, the sun would have burned itself out in a short time, a long, long, time ago. But because of the pressure at the sun's core, it actually creates its own fuel.
How are stars made simple answer?
Stars are made by gathering a load of hydrogen and a bit of helium into a ball like object. Because of the large amounts of pressure this causes in the centre, it heats up. When this reaches a certain temperature nuclear fusion occurs, giving off heat and the star shines.
How does a nuclear bomb explode?
A pure fission bomb completes its detonation in less than 10 microseconds, the fireball reaches full size in a few milliseconds. A fusion bomb takes somewhat longer but is typically more powerful.
What do scientist believe is in the middle of Saturn?
The outer layer of Saturn is primarily composed of molecular hydrogen. This changes as you go inward as pressure increases. As you venture deeper where the pressure reaches 100,000 bars, the gas starts to resemble a hot liquid. When the hydrogen reaches a pressure of 1,000,000 bar, hydrogen changes into a new state of metallic hydrogen. In this state it resembles a molten metal. This metalic hydrogen state occurs at about half of Saturn's radius. Below this is a layer dominated by ice where "ice" denotes a soupy liquid mixture of water, methane, and ammonia under high temperatures and pressures. Finally at the center is a rocky or rocky-ice core.
What do scientists believe in the middle of Saturn?
The outer layer of Saturn is primarily composed of molecular hydrogen. This changes as you go inward as pressure increases. As you venture deeper where the pressure reaches 100,000 bars, the gas starts to resemble a hot liquid. When the hydrogen reaches a pressure of 1,000,000 bar, hydrogen changes into a new state of metallic hydrogen. In this state it resembles a molten metal. This metalic hydrogen state occurs at about half of Saturn's radius. Below this is a layer dominated by ice where "ice" denotes a soupy liquid mixture of water, methane, and ammonia under high temperatures and pressures. Finally at the center is a rocky or rocky-ice core.
How fast does a nuclear bomb explode?
A pure fission bomb completes its detonation in less than 10 microseconds, the fireball reaches full size in a few milliseconds. A fusion bomb takes somewhat longer but is typically more powerful.
How is energy produced in the suns core?
By thermonuclear fusion of hydrogen, producing helium. The same process that produces the energy in a hydrogen bomb (although the sun fuses far more hydrogen in the same period of time than the largest hydrogen bomb ever speculated would fuse during its entire explosion, thus producing more energy than such a bomb).
What is the source of the sun energy?
The sun shines because some of the nuclear energy is transformed into radiant energy. Enormous compression due to gravity and extremely high temperatures in the deep interior of the Sun fuse the nuclei of hydrogen atoms together to form helium nuclei. This is called thermonuclear fusion (a process that releases radiant energy, a small part of which reaches Earth).
What on earth reaches 5200 degrees Fahrenheit?
A nuclear reactor could.
How does pressure help in liquefaction of a gas?
Once pressure reaches vapor pressure, gas will liquify at that temperature.
