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When the core of a star shrinks after hydrogen fusion stops the core heats up but what happens to the star?
The rest of the star expands.
Where does hydrogen fusion occur when there is no hydrogen left in the core of a star?
If there is no hydrogen left at the core of star then hydrogen fusion cannot occur. What happens in the core of a star before that happens is that helium begins to fuse, and then the other elements going up the periodic table until carbon. And then if the star explodes into a supernova, traces of the higher elements are fused as well.
What is the main source of energy of a star as it grows in size to becomes a red giant?
A main sequence star burns hydrogen to helium. Once a main sequence star exhausts all of the hydrogen, it begins to expand and burn helium causing if to become a red giant.
What happens in the core that marks the birth of a star?
Nuclear fusion, converting hydrogen nuclei into helium nuclei.
Why does an old main sequence star have more helium than a young main sequence star?
Stars convert hydrogen into helium over time.However, please note that they do so at very different rates; a massive star burns its fuel (hydrogen) much faster than a less massive star - so you can well have a massive star, which is only a few million years old, but which already burnt much of its fuel.
What happens when a star burns all of its hydrogen?
When a star burns up all of its hydrogen,it becomes red in color.As hydrogen is the fuel for star and it will burst after it.
What happens when a star burns up all of its hydrogen?
When a star runs out of hydrogen fuel in its core, nuclear fusion slows down and the core contracts while the outer layers expand. The star becomes a red giant as it fuses heavier elements in its shell, until eventually it sheds its outer layers forming a planetary nebula, leaving behind a dense core known as a white dwarf.
What happens to a star in a billion years?
it dies out (burns out)
What fuel burns in a main sequence star?
Hydrogen "burns" as it were, in "nuclear fusion" reactions to give helium and release energy.
What is the main characteristic of a sequence star?
The defining characteristic of a main sequence star burns hydrogen to helium in its core.
What causes a giant?
After a star burns up all it's hydrogen, it becomes a red giant.
What happens to Hydrogen atoms in a star's core?
its clears air
Can 2 hydrogen molecules be combined with an oxygen molecule to make water?
YES, this happens when hydrogen burns. 2H2 + O2 ==> 2H2O
What happens to the hydrogen atoms in methane when it is burnt in plenty of oxygen?
it burns and seperates actually it burns and oxygen burns it , methane is the gas that we mostly use in southern countries for cooking
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
When the core of a star shrinks after hydrogen fusion stops the core heats up but what happens to the star?
The rest of the star expands.
Where does hydrogen fusion occur when there is no hydrogen left in the core of a star?
If there is no hydrogen left at the core of star then hydrogen fusion cannot occur. What happens in the core of a star before that happens is that helium begins to fuse, and then the other elements going up the periodic table until carbon. And then if the star explodes into a supernova, traces of the higher elements are fused as well.
