1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arte-miy333 [17]
3 years ago
14

How is a high mass star formed

Biology
2 answers:
Eduardwww [97]3 years ago
7 0

Answer:

From Red Giant to Supernova: The Evolutionary Path ofHigh Mass Stars. Oncestars that are 5 times or moremassive than our Sun reach the red giant phase, their core temperature increases as carbon atoms are formed from the fusion of helium atoms. ... When the core contains essentially just iron, fusion in the core ceases.

JulijaS [17]3 years ago
7 0

Answer:

Educators' Corner

Background: Life Cycles of Stars

Search

search this site

The Life Cycles of Stars: How Supernovae Are Formed

It is very poetic to say that we are made from the dust of the stars. Amazingly, it's also true! Much of our bodies, and our planet, are made of elements that were created in the explosions of massive stars. Let's examine exactly how this can be.

Life Cycles of Stars

A star's life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star's mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born. Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. As the gas spins faster, it heats up and becomes as a protostar. Eventually the temperature reaches 15,000,000 degrees and nuclear fusion occurs in the cloud's core. The cloud begins to glow brightly, contracts a little, and becomes stable. It is now a main sequence star and will remain in this stage, shining for millions to billions of years to come. This is the stage our Sun is at right now.

As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. The outer shell of the star, which is still mostly hydrogen, starts to expand. As it expands, it cools and glows red. The star has now reached the red giant phase. It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which of the following life cycle paths it will take from there.

diagram of the life cycles of low and high-mass stars

The life cycle of a low mass star (left oval) and a high mass star (right oval).

The illustration above compares the different evolutionary paths low-mass stars (like our Sun) and high-mass stars take after the red giant phase. For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.

On the right of the illustration is the life cycle of a massive star (10 times or more the size of our Sun). Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence. However, their life cycles start to differ after the red giant phase. A massive star will undergo a supernova explosion. If the remnant of the explosion is 1.4 to about 3 times as massive as our Sun, it will become a neutron star. The core of a massive star that has more than roughly 3 times the mass of our Sun after the explosion will do something quite different. The force of gravity overcomes the nuclear forces which keep protons and neutrons from combining. The core is thus swallowed by its own gravity. It has now become a black hole which readily attracts any matter and energy that comes near it. What happens between the red giant phase and the supernova explosion is described below.

You might be interested in
The process by which organisms keep everything inside their bodies within certain limits is called
zimovet [89]

Answer:

is metabolism the correct answer?

3 0
3 years ago
Read 2 more answers
Which substance is a compound?
bekas [8.4K]
Oxygen is a compound , phosphorus and nitrogen , and reservoirs

8 0
3 years ago
Read 2 more answers
Who studied mitosing cells
Aleks [24]

Answer:Margulis

She is the one who discovered it

3 0
3 years ago
Read 2 more answers
8. Crossing over is an exchange of corresponding segments between nonsister
prisoha [69]

The main benefit of crossing over is that it increases genetic diversity.

<h2>Crossing over and Genetic Diversity</h2>

Crossing over ensures that the daughter cells produced are genetically more diverse than their parent cells.

The exchange of chromosomal segments makes the chromosomes of the daughter cells to be more sophisticated than that of their parents.

Increased genetic diversity in daughter cells increases their chances of survival as more genes are present in their genomes that could potentially make them more adaptable to the environment.

In summary, crossing over increases genetic diversity and genetic diversity increases the chances of survival in the face of changing environment.

More on genetic diversity can be found here: brainly.com/question/1446827?referrer=searchResults

5 0
2 years ago
HELP PLEASE!!!!<br><br><br> What are one or two important details
Andreas93 [3]

Answer:

the Hawaii scientific drilling project drilled over 3000 meters into the Mauna loa volcano and  when the lava is cooled it turns into a solid rock.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • The study of which structure was instrumental in the formulation of the modern cell theory?
    12·1 answer
  • _______ may be used in equine medicine to diagnose lameness by administering it to an area and observing abatement and lameness.
    11·1 answer
  • Digestion takes place inside _______ containing _______?
    6·1 answer
  • At which stage of the scientific process would a scientist look at experimental data from other scientists to set up an experime
    6·1 answer
  • 3. While walking in the forest floor, you found an organism that has the following characteristics: had the consistency and appe
    15·1 answer
  • When blood vessels narrow, they help increase blood pressure. Thinking only about smooth muscle in the arms, you know that Selec
    10·1 answer
  • If we could represent what is going on inside a plant using a simulation:
    5·1 answer
  • The magnified diameter measurement of the nucleus on the actual
    13·1 answer
  • PLEASE HELP ME <br> IDENTIFY AND EXPLAIN AN EXAMPLE OF LONG-TERM CLIMATIC CHANGE
    8·2 answers
  • If a purple-flowered plant is crossed with a white-flowered plant, and 37% of the offspring have white flowers, then the genotyp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!