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Why is the density of a red giant less than a white dwarf?
A red giant has been greatly inflated by the energy from nuclear fusion in a shell around the core. In a white dwarf fusion has stopped, the core has collapsed, and the low-density outer layers have been expelled into space.
Does a red giant start have fusion occurring in its core?
No. In a red giant, fusion occurs in a shell around the core.
What process generates the heat and energy in present day nuclear power plants?
Nuclear fission and nuclear fusion are the two processes that are used in the nuclear power plants. Nuclear fission refers to the process of splitting the atomic nuclei while nuclear fusion refers to the process of joining the atomic nuclei.
Which type of fusion occurs in the red giant phase?
Thermonuclear fusion of hydrogen occurs during the red giant phase. Helium to carbon fusion, or dredge up, also occurs at this time.
Is the sun a giant ball of burning coal?
Answer: No it is a ball of hot gases Answer: No. The Sun gets its energy from nuclear fusion; NOT from a chemical reaction such as burning coal. The main elements in the Sun are - in that order - hydrogen and helium (more precisely, the isotopes hydrogen-1 and helium-4). There are trace amounts of carbon in the Sun, but that's not what keeps it hot.
How nuclear fusion in a main sequence is different from nuclear fusion in a giant star?
Nuclear Fusion in a Giant Star involves Helium being fused into a hydrogen shell that surrounds the core, and Nuclear Fusion in a Main-Sequence star involves Hydrogen being fused into Helium to produce Energy inside of the core.
How is nuclear fusion in a main-sequence star is different from nuclear fusion in a giant star.?
Nuclear Fusion in a Giant Star involves Helium being fused into a hydrogen shell that surrounds the core, and Nuclear Fusion in a Main-Sequence star involves Hydrogen being fused into Helium to produce Energy inside of the core.
How are planetary nebulas different from stars?
Stars are balls of gas that undergo nuclear fusion and have a core, their light come from the energy released during nuclear fusion. Planetary nebulae are the blown-off shells of dying red giant stars, the light of a planetary nebula come from ionized gas and light of other stars.
What gas giant has nuclear fusion on it?
None. Nuclear fusion occurs in stars. Jupiter, for example, has all the right ingredients to be a star but as huge as it is, it doesn't have enough mass to generate the heat and internal pressure facilitate nuclear fusion. Hope this helps :-)
What is a giant ball of gas primarily hydrogen and helium which undergoes nuclear fusion?
Star
Does a red main sequence star have fusion?
A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.
The Star providing heat and light to the earth?
The giant ball of nuclear fusion at the centre of the solar system, the star known as the sun.
What is the difference between red and brown dwarf stars?
Red dwarf stars are massive enough to undergo nuclear fusion, so they would burn a long time before they run out of fuel. Brown dwarves are not massive enough for nuclear fusion, so almost all of its light come from the time when the brown dwarf was formed. Over a long period of time, a brown dwarf would cool down into a gas giant similar to Jupiter.
Why is the density of a red giant less than a white dwarf?
A red giant has been greatly inflated by the energy from nuclear fusion in a shell around the core. In a white dwarf fusion has stopped, the core has collapsed, and the low-density outer layers have been expelled into space.
Does a red giant start have fusion occurring in its core?
No. In a red giant, fusion occurs in a shell around the core.
What process takes place inside of stars?
Nuclear reactions produce the energy of the stars. Older stars undergo the triple-alpha process, while massive stars undergo the carbon cycle fusion and the Sun undergoes proton-proton fusion.Ê
Red giant is a luminous giant star of low or intermediate mass that is in a late phase of its evolution with nuclear fusion going on in a shell outside the core but not in the core itself?
Thermonuclear fusion is still going on in the core of a red giant, but it is a different type of thermonuclear fusion. The center of the core has reached high enough temperature and pressure that it can now burn helium, producing carbon. 3 4He --> 12C The large amount of energy released by this type of fusion pushes the outer layers away, making a giant star. The expansion of volume of the surface layer causes it to cool, appearing red. Thus a red giant.
