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Why do red giant stars expand?
Because they begin to run out of fuel
Is the sun median size compared to other stars?
Among stars supporting progressive fusion reactions, the Sun is below average in size. However, astronomers estimate that as many as 75% of all stars in the visible universe are red dwarfs, which are considerably smaller than the Sun. As it ages, the Sun will eventually lose luminosity but expand in size. Over billions of years, it will become a red giant star, and when that phase ends, its core will form a white dwarf.
How are stars classified by size and temperature?
it is classified by thier size because stars are big and hot. the temperature is may up to 100,000,000 hotter than other stars
An open universe is one that?
An open universe is a universe where all of the galaxies and stars and everything in the universe keep expanding with nothing stopping them. This theory says that the galaxies and stars will keep going further and further from the centre of the universe until everything dies off. This is the opposite of the closed universe theory where everything will expand, and then something will cause a turning point and everything will contract until everything there ever was will fit into a space the size of the dot at the end of this sentence. Then, possibly another 'Big Bang' will happen and start everything over again. :)
Do stars get old?
Yes. As with everything and anything in the universe, stars get older as time passes. When as star is very very old and ready to die, sometimes it will expand to a massive size (a red giant) due to the lack of gravity from the center to keep the gases close by and then collapse into a neutron star.
Do stars expand in size?
Stars expand in size to become red giants, when they start running low on Hydrogen fuel.
What do the words expand and contract mean?
contract is when an object is the same size as always expands is when it gets bigger
What kind of table cells expand or contract in size based on the screen resolution?
liquid cells
Does the human body expand or contract and why?
I think we can.As our human body which is a solid gains heat , they expand and contract when they lose heat.And solids do expand and contract.
Does matter expand or contract when it is heated?
Expand
When substances get cooler they expand or contract?
Contract
What is the difference between expand and contract?
Expand refers to an increase in size, such as blowing up a balloon. Contract refers to decreasing the size or making something tight or narrow like an artery that cannot get blood due to being too narrow.
How does a baby born?
a unborn baby is born it comes through the vagina the vagina can expand to about the size of a baby and contract to the size if a pea this is why its u nique
How does babies born?
a unborn baby is born it comes through the vagina the vagina can expand to about the size of a baby and contract to the size if a pea this is why its u nique
What matter expand and contract?
explain how temperature affects matter using the words contract and expand
Does matter expand or contract when it's heated?
Expand
What do muscles need in order to expand and stretch?
They have to either expand or contract through movement. They can only expand and contract as far as their tissues will allow,
