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Is a star's outer layer hot and dense?
Yes, a star's outer layer, called the photosphere, is hot and dense. This is where most of the visible light and heat emitted by the star originate. The temperature and density of the photosphere vary depending on the type and age of the star.
What is the very small faint hot star?
A very small, faint hot star is typically referred to as a "white dwarf." These stars are the remnants of medium-sized stars that have exhausted their nuclear fuel and shed their outer layers, leaving behind a dense core. White dwarfs are extremely hot initially but have low luminosity due to their small size, making them faint compared to other stars. Over time, they cool and fade further, eventually becoming undetectable.
Match each body to its best description A. black hole an old very dense hot star that is cooling B. red giant a large star that is relatively cool C. white dwarf a an object so dense that even light c?
Black hole- an object so dense that even light cannot escape its gravity Red Giant - a large star that is relatively cool White Dwarf - an old, very dense hot star that is cooling Nebula - A mass if gas and dust
Is a red giant an old very dense hot star that is cooling?
No, a red giant is not an old, very dense hot star that is cooling. Instead, it is a late stage in the evolution of a star that has exhausted the hydrogen in its core and is now fusing helium or heavier elements. As a result, the outer layers expand and cool, giving the star its characteristic reddish color. While red giants can be quite large, they are not notably dense compared to other stellar types, like white dwarfs.
What kind of star is hot and has a very small radius?
A white dwarf star fits this description. White dwarfs are hot due to residual heat from their earlier stellar evolution, but they have a small radius comparable to that of a planet like Earth.
Is the white dwarf a large star that is relatively cool?
No it is a small star (about the size of Earth) that is VERY dense and quite hot (although it is not producing new energy).
What is an older star that has become small?
An older star that has become small is called a white dwarf. White dwarfs are the remnants of low to medium mass stars that have exhausted their nuclear fuel and collapsed to a very dense state. They are very hot and small compared to their original size as a main sequence star.
Is a star's outer layer hot and dense?
Yes, a star's outer layer, called the photosphere, is hot and dense. This is where most of the visible light and heat emitted by the star originate. The temperature and density of the photosphere vary depending on the type and age of the star.
What star is An Old Dense Hot Star?
White dwarf
What is the very small faint hot star?
A very small, faint hot star is typically referred to as a "white dwarf." These stars are the remnants of medium-sized stars that have exhausted their nuclear fuel and shed their outer layers, leaving behind a dense core. White dwarfs are extremely hot initially but have low luminosity due to their small size, making them faint compared to other stars. Over time, they cool and fade further, eventually becoming undetectable.
What is an old dense hot star?
White dwarf
Match each body to its best description A. black hole an old very dense hot star that is cooling B. red giant a large star that is relatively cool C. white dwarf a an object so dense that even light c?
Black hole- an object so dense that even light cannot escape its gravity Red Giant - a large star that is relatively cool White Dwarf - an old, very dense hot star that is cooling Nebula - A mass if gas and dust
Is a red giant an old very dense hot star that is cooling?
No, a red giant is not an old, very dense hot star that is cooling. Instead, it is a late stage in the evolution of a star that has exhausted the hydrogen in its core and is now fusing helium or heavier elements. As a result, the outer layers expand and cool, giving the star its characteristic reddish color. While red giants can be quite large, they are not notably dense compared to other stellar types, like white dwarfs.
What is a star that is dense and made up of hot gases?
the sun
What is an example of a hot star which is not very bright?
This could be a white dwarf. Its essentially a `dead star` as nuclear reactions no longer take place, but it remains very hot for millions of years from residue heat. They are very small though, compared with other stars or the size they used to be. If a hot bright star is very very far from earth then this also will appear dim from earth. It may have a low apparent magnitude (but a high absolute magnitude).
What kind of star is hot and has a very small radius?
A white dwarf star fits this description. White dwarfs are hot due to residual heat from their earlier stellar evolution, but they have a small radius comparable to that of a planet like Earth.
Is a white dwarf an old dense cool star?
A white dwarf is the remains of an old star, but they still remain very hot and will continue to shine as a white dwarf for many millions of years until they gradually cool off to become black dwarfs. They are very dense.
