What do stars need to grow?

Answer 1

AnswerBy stars I'm assuming you mean suns. They expand and become giant for only a moment, then they recede into a smaller star roughly half the size it was before and they become white instead of red or orange. These are known as "White Dwarfs".

Answer 2

This depends on a stars mass, temperature, and magnitude. Since pressure of surrounding gas on the core of a star causes the temperature at the core to get hot/start fusion, stars that have a lot of mass must have a high temperature in the center, which means the photosphere must be hot, too. This means that stars which have lots of mass must also have high surface temperatures. Since we know that blue energy is higher than red energy, we can conclude that more massive stars have light that is shifted towards the blue.

From the above arguement, you can conclude that stars that aren't very massive must have lower surface temperatures and therefore light that is shifted toward the red.

Therefore, stars shifted towards the blue have far shorter life spans because they fuel at a must faster rate, and stars shifed towards the red live longer because they burn fuel slowly.

Stars that are shifted more towards blue energy go out very dramatically because they have enough mass to fuse heavier elements. This results in an eventual collapse that produces a gigantic explosion called a Supernova, and reduces the core of the star into either a super dense objected called a Neutron Star or a Black Hole.

During the stars life span, the outer shell of a dying star gets blown off into space due to unstable helium fusion. This is called Planetary Nebulae.

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Answer 3

"Most" stars are red dwarf or brown dwarf stars, and don't "become" anything else; they will probably exist more or less in their current form until they fade into "black dwarf" stars with too much helium to support hydrogen fusion, and too little mass to initiate helium fusion. That's probably 100 billion or more years in the future.

It's only the minority of very high-mass stars that become something else such as neutron stars or black holes.

Answer 4

Not generally. A star generally has all the mass it will ever have when it forms.

However, toward the end of a star's "life", it does expand - a LOT. When the star is "normal", it is fusing hydrogen into helium, and the helium "ash" in the solar fireplace begins to build up. The energy released by fusion isn't enough, any longer, counteract the star's own internal gravity.

The star begins to shrink, slightly, and compress. The force of gravity increases the pressure and temperature in the core as the star shrinks, and at some point the temperature is high enough for the helium "ash" to begin fusing itself, into heavier elements like carbon and oxygen. This generates a LOT more energy, and the star abruptly expands into a red giant.

When our Sun gets to be a red giant in about 4 billion more years, it will expand and will probably consume the planets Mercury and Venus. Earth may survive, but the surface will become far too hot to support any kind of life. Before that happens, we'll need to move the Earth out to a safer distance, perhaps into orbit around Jupiter or Saturn.

Answer 5

They either burn out and die, orr they flare up then die or they create huge explosions. It all depends on how much energy the star has and how big it is.

Answer 6

What happens to plastic at the end of their lives?

Answer 7

If you are referring to the stars in the sky at night then, since they are mostly balls of heat then they probably need heat but I'm not sure cuz I'm 11 so you could ask your mom or dad

Answer 8

they die

so sad

Answer 9

They expload .

Answer 10

They get wet when it rains.