Please explain in your own words how a nebula forms into a star, using the terms: Mass, Gravity, Pressure, Temperature, Nuclear Fusion.

Answers

Answer 1
Once massive stars reach the red giant phase, the core temperature continues to increase as carbon atoms are formed from the fusion of helium atoms. Gravity continues to pull together the carbon atoms in the core until the temperature reaches 600,000,000 degrees Celsius. At this temperature, carbon atoms form heavy elements such as oxygen and nitrogen. The fusion and production of heavy elements continues until iron starts to form. At this point, fusion stops and the iron atoms start to absorb energy. This energy is eventually released in a powerful explosion called a supernova. A supernova can light the sky up for weeks. The temperature in a supernova can reach 1,000,000,000 degrees Celsius. This high temperature can lead to the production of new elements which may appear in the new nebula that results after the supernova explosion. The core of a massive star that is 1.5 to 4 times as massive as our Sun ends up as a neutron star after the supernova. Neutron stars spin rapidly giving off radio waves. If the radio waves appear to be emitted in pulses (due to the star's spin), these neutron stars are called pulsars. The core of a massive star that has 10 or more times the mass of our Sun remains massive after the supernova. No nuclear fusion is taking place to support the core, so it is swallowed by its own gravity. It has now become a black hole which readily swallows any matter and energy that comes too near it. Some black holes have companion stars whose gases they pull off. As the gases are pulled down into the black hole, they heat up and give off energy in the form of X-rays. Black holes are detected by the X-rays which are given off as matter falls down into the hole.

Related Questions

What will happen to the rate of photosynthesis, if the temperature is
either above or below the optimal range?
it will increase
it will decrease
it will remain unchanged
Plz answer this fast!

Answers

Answer: im not 100% but i think its it will increase

Explanation:

At temperatures above 68 degrees Fahrenheit,or 20 degrees Celsius,the rate of photosynthesis decreases because the enzymes do not work as efficiently at this temperature. This is despite the increase of carbon dioxide diffusion into leaves.

What percentage of the atmosphere needs to be full in order for precipitation to fall?

Answers

Answer: 100%

Explanation:

What are the ecological levels from smallest to largest

Answers

Answer:

I think that it would be; Population, Community, Ecosystem, Biomes, Biosphere.

Explanation:

Hope this helps!

I ate spaghetti and meatballs for lunch. Which two
biomolecules were present in my lunch?

Answers

Carbohydrates and proteins

Which is an example of the gravitational force?

A basketball that was thrown in the air falls to the ground.
The particles that make up the neutrons in an oxygen atom are held together.
A radioactive element, uranium, decays and becomes stable.
The molecules that make up olive oil stick together.

Answers

THE ANSWER:
A basketball that was thrown in the air falls to the ground.

Answer:

A

Explanation:

Which is the function of blood cells?

Answers

Answer: What are the functions of blood cells? The main job of red blood cells, or erythrocytes, is to carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs.

Hope this helps... Stay safe and have a great Thanksgiving!!!!! :D

To carry oxygen to the lungs and keep repeating

What countries can a 650 GW power capacity sustain?

Answers

Answer:

What is GW standing for ?

Explanation:

Write 8 examples on possible hazard in raising four-legged animals and fish​

Answers

Answer: The below are following hazards of four-legged animals and fish.

Explanation:

The four legged animals like cats, dogs, horse, and others need proper shelter, food, and care to survive.

They need to be taken outdoors for excretion, and walk.

The mating period is not fix and not easily done.

The four like fishes like turtle and squid are difficult to be handled in aquarium.

The four legged fishes do not come in fishing net during aquarium cleaning.

There are chances of being biten by four legged animals and their associated diseases like rabies.

These animals can lick the food we eat and contaminate the food.

The animal feces may produce air pollution.

The animal noise like dog bark can cause noise pollution.  Thus can lead to problem of hypertension.

What trend does the first ionization energy follow in the periodic table?

Answers

Answer:

A

Explanation:

Answer: B

Explanation: i just got it wrong and thats the right answer

What is the center/core of an atom?

Answers

Answer:

the nucleus is the center of an atom.

Explanation: you can call it "the powerhouse" of the atom.

4. Analyze the roles of greenhouse effect
agriculture sector in Bhutan.
in the
-​

Answers

Answer:

global warming

Explanation:

it will make agriculture very hard

Which best defines a diploid cell during meiosis?

Answers

two diploid cells after the first meiosis. To provide clear explanation, in contrast haploid cells only contain 23 chromosomes and are created after meiosis II which is 4 in number.

Answer:

a cell that has double the number of chromosomes as the daughter cell

Explanation:

Help me please ASAP!

Answers

Answer:

It is used to edit genes

Explanation:

I looked it up.

Edit genes that’s the answer

Because they are nearer to people and property, surface waves do more damage than body waves. O True False​

Answers

Answer:

true

Explanation:

Please help me out once again

Answers

Answer:a i think if I’m wrong sorry
Answer: B
I hope this help you

can someone do a b c for me

Answers

Answer:

a) 35

b) 8

Explanation:

i cant do c but i think these are the right answers

Timed!! NEED HELP!!
Need help answering these two fill in the black questions
(7 and 8)

Answers

Answer:

a

Explanation:

Water molecules made by living things become part of the water cycle through

A. the dark reactions

B. the Krebs cycle

C. alcoholic fermentation

D. aerobic respiration

Answers

Answer:

D. aerobic respiration

In a volcanic eruption, carbon dioxide dissolved in magma is released into the atmosphere during the explosion. What transition is described here? Question 2 options: Biosphere to geosphere Hydrosphere to biosphere Geosphere to atmosphere Atmosphere to hydrosphere asap

Answers

Answer:

Biosphere to geosphere.

Explanation:

Answer:

Geosphere to atmosphere

Explanation:

Got it correct on quiz

PLS HELP!! WILL GIVE BRAINLIEST!!
1. Summarize the steps of the scientific method.What is the purpose of the control in an experiment? The variable?

Answers

Answer:

You make an observation, ask a question, form a hypothesis, make a prediction about the hypothesis, test the prediction and lastly use the results to make new hypotheses or predictions.

This increases the reliability of the results (A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable)

The things that are changing in an experiment are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types.

Explanation:

What are four major characteristics of the phylum Echinoderms?

Answers

Answer:A calcareous, spiny endoskeleton of plates or ossicles

A water-vascular system

Pedicellariae

Dermal branchiae

Basic penta-radial symmetry

Explanation:

Explanation:

Hope this helps....................

DNA and RNA are known as

Answers

Answer:

deoxyribonucleic acid and ribonucleic acid

Answer:

are know as nucleic acid

The circulatory system is an organ system in the body that helps maintain
homeostasis by transporting oxygen, nutrients, and other substances throughout
the body and removes wastes from tissues. The circulatory system includes the
heart, blood vessels, and blood.

Name Class Date

10Chapter 16 Test
Based on the information in the table, which types of cells are present in tissues
that comprise the circulatory system? Select all that apply.
a. Fat cells are part of the circulatory system because they store energy for the
system.
b. Beta cells are part of the circulatory system because they are found in the
pancreas and secrete insulin, which keeps blood glucose level in response to
food intake.
c. Hair cells are part of the circulatory system because they are found in the ear
and transfer vibrations to neural signals that are interpreted by the brain as
sound.
d. Cardiomyocytes are part of the circulatory system because they are muscle
cells found in the heart, which pumps blood throughout the body.

Thank you!

Answers

I say b and d because they both indicate about the heart

Based on the information in the table, the types of cells present in tissues are Cardiomyocytes are part of the circulatory system because they are muscle cells found in the heart, which pump blood throughout the body. The correct option is d.

What are cardiomyocytes?

The cell that contracts the heart is called a cardiomyocyte, and it does so with the help of a complex network of ion transporters and contractile proteins with the aim of efficiently carrying out the contraction-relaxation cycle.

Typically, pacemaker cells, force-producing ventricular and atrial CM, and cardiomyocytes (CM) are separated.

Therefore, the correct option is d. Cardiomyocytes are part of the circulatory system because they are muscle cells found in the heart, which pump blood throughout the body.

To learn more about cardiomyocytes, refer to the link:

https://brainly.com/question/30554103

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What is the best classification of the stimuli described in the following scenario? You are quietly reading a book on the beach. Unexpectedly, the person next to you lights a large firework. You jump up and throw your book in the sand.
Fight or Flight
Photoropism
Geotropism
Wilting and Turgor

Answers

Fight or flight, because according to Hans Selye, this occurs at times of danger when your adrenaline is heightened.

Which best describes two counteracting forces on an object?

using a dolly to push a box to another location
two children pulling apart a wishbone
a group of dogs pulling a dogsled across the ice
two people pushing a broken-down car up the road

Answers

Answer:

The answer is B: Two children pulling apart a wishbone

Explanation:

Edge2020!

Answer:

b

Explanation:

By which mechanism does older oceanic rock move at a ridge? Magnetic forces move the rock. Continents drift and move the rock. The ridge subducts and moves the rock. New molten material rises and moves the rock.

Answers

Answer:

it is d the answer is right our welcome

Explanation:

The mechanism by which older oceanic rock move at a ridge is : ( D ) New molten material rises and moves the rock

Oceanic rocks ( crust ) are made up of basalt and gabbro. Oceanic crust is thinner when compared to continental crust because of the continental crust are composed of andesite and granite which are light colored as well.

Older Oceanic rocks are moved at the ridges only when new molten materials are formed and these material rises from the crust causing the older Oceanic rocks to move.

Hence we can conclude that the mechanism by which older oceanic rock move at a ridge is New molten material rises and moves the rock.

Learn more about oceanic rocks : https://brainly.com/question/2188309

Homologous chromosomes may exchange segments, this is called crossing over. Crossing over increases genetic
variability
Where would you add crossing over" to the Venn diagram?

Answers

Answer: Meiosis

Explanation:

Crossing over of a chromosome always happen in meiosis 1. The material between the different sister chromatid in exchanged, so each gamete will be different of each other.

According to the question, the correct option is meiosis.

What is crossing over?

Crossing over is the exchanging of genetic material that occurs in the germline. During the formation of egg and sperm cells, also understood as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.

Thus, meiosis is correct.

To learn more about meiosis click here:

https://brainly.com/question/2095046

The ornaments plants called fems,why​

Answers

Explanation:

Ferns are commonly known as ornamental plants because of their delicate appearance and bright colors. - Ferns have a huge variety of plants exhibiting different characteristics. - They are vascular plants.

please. follow. me

12 A group of organs working together to perform a certain
function is called
A a cell
B an organism
Ca system
D a tissue

Answers

Answer:

I believe its a system.

What is the role of light and chlorophyll in photosynthesis?

Answers

Explanation:

During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.

In photosynthesis, role of light is to convert water and carbon dioxide to organic products and chlorophyll helps in absorbing light energy from the sun.

What is photosynthesis?

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

The process begins with proteins absorbing light energy which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.

Learn more about photosynthesis,here:

https://brainly.com/question/26494694

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Is 4 a solution to the compound inequality x > 0 AND x < 7 Please help also please explain Choose the correct word or phrase to complete each sentence. Country of origin can strongly influence a firms approach to organization structure. As MNEs from China and India internationalize, to what extent are they likely to differ from that observed for Japanese, European and US MNEs? Help me pls thank you!! Determine whether the system has no, one, or infinitely many solutions. y = -64x + y = 2 what are purpose of constructing hospital in nepalese society How many years later did Mexico become independent from Spain? the mean of the following numbers is 15. 14,10,18,,21,15,14 A card is drawn from a deck of 52 cards. What is the probability that it is a 6 or club a ? very easy 6th grade english! please help! brainliest promices! A merge field can be used multiple times in the same document.A. TrueB. False lg(5x+10)+2lg3=1+lg(4x+12)need them fast with steps PLEASE ANSWER FASTWhich theme of Eugene O'Neill's Beyond the Horizon is reflected in this excerpt from act 1 of the play?ROBERT. No, I oughtnt. (Pointing to the horizondreamily) Supposing I was to tell you that its just Beauty thats calling me, the beauty of the far off and unknown, the mystery and spell of the East which lures me in the books Ive read, the need of the freedom of great wide spaces, the joy of wandering on and onin quest of the secret which is hidden over there, beyond the horizon? Suppose I told you that was the one and only reason for my going?A. the value of reading booksB. the value of travelling C. importance of following one's dreamsD. importance of family values What is 0.74 + (-3/5) Which is the best example of the use of imagery in a sentence?Alexandra noticed the sweet scent of a single red rose that had been placed in a small vase in the center of thedining room table.Alexandra thought she might go for a walk later in the afternoon after she had finished her homework.O Because she had practice after school and a lot of homework, Alexandra had been fairly busy all day.O Her science teacher thought that Alexandra had done a really good job on her animal classification project. Which of these equations correctly identify factors of 15? Check all that apply. 15 1 = 1515 2 = 715 3 = 515 5 = 315 10 = 5 Using coupons you spell $91 grocery shopping this is 65% of the total retail price of groceries how much would you have spent if you had not use the coupons Which of the following biogeochemical cycles does not contain a molecule in a gaseous state? Please help with symbolism ,developed events ,symbolism, structure in attached writing