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Why are dwarf plants are hot but dim?
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
What are the properties of white dwarf stars?
A white dwarf has approximately the mass of our Sun, in a volume that's about a million times smaller - so it has a very high density (some tonnes per cubic centimeter). It's also very hot. Since energy production has stopped, they will cool down over time, but not enough time has elapsed for that to happen yet - in other words, the existing white dwarves are still very hot.
What causes stars to change during the white and black dwarf phases?
A white dwarf no longer produces energy through fusion but remains hot from the residual heat of the star it once was. It will radiate that energy away and slowly cool as a result, eventually becoming a black dwarf.
Is a white dwarfs hot and dim or hot and bright?
As the name white dwarf implies, this is a small type of star, and it has less surface area from which to radiate light, so even if it is hot, and giving off lots of light per square mile, there are fewer square miles than in larger, non-dwarf stars, so there is less total light being emitted.
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 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.
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 group of stars is very hot but not very bright?
White Dwarf Stars.
Why the color of dwarf star is red?
Only a red dwarf star is red. Our Sun is a yellow dwarf. A red dwarf is red because it is cool, and cool colours are red whereas hot colours are white and blue.
Why are dwarf plants are hot but dim?
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
What are the properties of white dwarf stars?
A white dwarf has approximately the mass of our Sun, in a volume that's about a million times smaller - so it has a very high density (some tonnes per cubic centimeter). It's also very hot. Since energy production has stopped, they will cool down over time, but not enough time has elapsed for that to happen yet - in other words, the existing white dwarves are still very hot.
Are most stars in the sky hot or cool?
All stars are very hot. Even the comparatively "cool" ones have temperatures of thousands of degrees.
What causes stars to change during the white and black dwarf phases?
A white dwarf no longer produces energy through fusion but remains hot from the residual heat of the star it once was. It will radiate that energy away and slowly cool as a result, eventually becoming a black dwarf.
What is proxima centauri's surface?
Proxima centaury's surface is made of plasma because this star is a red dwarf. This red dwarf is the closest star to the solar system and has a surface temperature of about 3500 degrees Kelvin.
Are red stars hot or cool?
Red stars are cooler than stars of other colors but are still quite hot, which is why the glow red.
Is a white dwarfs hot and dim or hot and bright?
As the name white dwarf implies, this is a small type of star, and it has less surface area from which to radiate light, so even if it is hot, and giving off lots of light per square mile, there are fewer square miles than in larger, non-dwarf stars, so there is less total light being emitted.
Is betelgeuse hotter than a white dwarf?
No, the surface temperature of Betelgeuse is colder than the temperature of a white dwarf, the white dwarf is the hot core of a dead star. Also, red stars are always colder than white stars.
