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Low mass stars last longer because thermonuclear fusion occurs at a faster rate in high mass stars than in low mass stars. Therefore larger stars use all of their fuel faster than low mass stars and do not live as long.The more fuel, the more supply of material for fusion the star has and so the longer the star can live. The fuel is hydrogen atoms and the number of hydrogen atoms is greater in high mass stars than it is in lower mass stars. Thus, the higher the mass of the star, the longer its lifetime can be.A smaller star has less fuel, but its rate of fusion is not as fast. Therefore, smaller stars live longer than larger stars because their rate of fuel consumption is not as rapid.
Which lasts longer a high mass or low mass star?
The more fuel, the more supply of material for fusion the star has and so the longer the star can live. The fuel is hydrogen atoms and the number of hydrogen atoms is greater in high mass stars than it is in lower mass stars. Thus, the higher the mass of the star, the longer its lifetime can be.
Do low mass stars live longer?
A smaller star has less fuel, but its rate of fusion is not as fast. Therefore, smaller stars live longer than larger stars because their rate of fuel consumption is not as rapid.
Low Mass Stars: Crash Course Astronomy #29
Images related to the topicLow Mass Stars: Crash Course Astronomy #29
Is the lifetime of a high mass star longer or shorter than that of a low mass star quizlet?
Is the lifetime of a high-mass star longer or shorter than that of a low-mass star? High-mass stars have shorter lifetimes the low-mass stars.
What is the difference between high mass and low mass quizlet?
A low mass star is less than three solar masses. Define a high mass star. A high mass star is above eight solar masses.
How long do high mass stars live?
The incredibly rapid fusion rates mean that high-mass stars cannot live very long. – A 25 solar mass star only spends a few million years on the main-sequence (Remember the sun spends 10 billion years on the main sequence). When the core hydrogen is exhausted a high-mass star behaves like a low- mass star, only faster.
Why do high mass stars have shorter lifespans than low mass stars?
High mass stars (stars with masses greater than three times the mass of the Sun) are the largest, hottest and brightest Main Sequence stars and blue, blue-white or white in colour. High mass stars use up their hydrogen fuel very rapidly and consequently have short lives.
Why do higher mass stars live shorter lives?
A star’s life expectancy depends on its mass. Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only a few million years of fusion.
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-High-mass main-sequence stars have longer lifetimes than those of lower-mass stars because they have a much larger supply of nuclear fuel.
Which type of star will have the longest life and why?
Generally, the bigger a star is, the faster it uses up its supply of nuclear fuel, so the longest-lived stars are among the smallest. The stars with the longest lifetimes are red dwarfs; some may be nearly as old as the universe itself.
Which stage of a star’s life cycle is the longest for each mass of star?
The star is now on a stage of its life called the main sequences phase and is thus called a main sequence star. This is the longest phase of the star’s life and all the energy the star emits comes from the nuclear conversion of hydrogen to helium in its core.
Why do lower mass stars burn for a longer time quizlet?
Stars that begin their lives with the most mass live longer than less massive stars because it takes them a lot longer to use up their hydrogen fuel. No, more massive stars are much more luminous than low mass stars and use up their hydrogen faster, even though they have more of it.
Why do low mass stars have longer main sequence lifetimes than higher mass stars quizlet?
-High-mass main-sequence stars have shorter lifetimes than those of lower-mass stars because high-mass stars burn their fuel at much faster rates.
Why are main sequence lifetime shorter for more massive stars quizlet?
Why does mass determine the main-sequence lifetime of a star? Because more massive stars burn fuel faster and therefore have shorter lives.
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What is one key difference between low mass and high mass stars?
Both, a low mass Star and a High mass Star will Start off with fusing hydrogen into Helium, though a high mass Star will burn it faster because of increased pressure and temperature in the core. A second difference is the ability to create heavier elements.
What characteristic differentiates high mass stars from low mass?
Short Main-Sequence Lifespan
A high-mass star will have more hydrogen to burn in this process. The energy released by this process will maintain higher temperatures and the star will, in turn, burn more hydrogen than a low-mass star. Hence, high-mass stars burn out their energy quicker than low-mass stars.
How do low mass intermediate and high mass stars live their lives quizlet?
-A star’s mass determines how it lives its life. Low-mass stars never get hot enough to fuse carbon or heavier elements in their cores and end their lives by expelling their outer layers and leaving white dwarfs behind. High-mass stars live short but brilliant lives, ultimately dying in supernova explosions.
How long does a low-mass star live?
Low-mass stars with mass less than the solar mass burn their fuel at a much lower rate and can, therefore, shine for billions of years. They are analogous to small, fuel economy cars. The lifetime of a 0.5 solar mass star, for example, is 57 billion years.
What type of stars live the longest?
Red Dwarfs: The Most Common and Longest-Lived Stars.
Which type of star has the shortest life span?
Supergiants have the shortest lifespans of any star, as the temperatures in a supergiant’s core get so high that it is able to fuse the helium that is left over after hydrogen burning has stopped.
Which stars have longer lifetimes quizlet?
Less massive stars have longer lifetimes because they are burning the hydrogen in their cores at a slower rate than more massive stars.
Why do high mass stars burn faster?
The core, thus, gains mass and so exerts a stronger gravitational pull. The extra gravitational pull compresses both the core and the hydrogen-burning shell around it. As the hydrogen-burning shell becomes denser, it becomes hotter and burns hydrogen at a faster rate, making the star even brighter and larger.
Why do big stars burn faster?
The mass of a star plays a role in how long it takes to “burn” through the fuel. More massive stars use their fuel faster because it takes more energy to counteract the larger gravitational force. (Or, put another way, the larger gravitational force causes the atoms to collide together more rapidly.)
How long do stars live for?
Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long. Stars begin their lives as dense clouds of gas and dust.
High Mass Stars: Crash Course Astronomy #31
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What is the relationship between a star’s mass and its lifetime?
A star’s mass gives a measure of the amount of “fuel”, and its luminosity gives a measure of the rate at which this “fuel” is consumed by nuclear burning, so a star’s lifetime is proportional to its Mass divided by its Luminosity.
Why stars become much smaller and incredibly dense compact at the end of their life cycles?
After the outer layers of the star have swollen into a red supergiant (i.e., a very big red giant), the core begins to yield to gravity and starts to shrink. As it shrinks, it grows hotter and denser, and a new series of nuclear reactions begin to occur, temporarily halting the collapse of the core.
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