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
Mashutka [201]
3 years ago
13

A star is not considered born until the process of nuclear fusion

Biology
1 answer:
jonny [76]3 years ago
4 0
Star is a brilliantly glowing sphere of hot gas whose energyis produced by an internalnuclear fusion process. Stars are contained in galaxies. A galaxy contains not only stars, but clouds of gas and dust. These clouds are callednebulae, and it is in a nebula where stars are born. In the nebula is hydrogen gas which is pulled together by gravityand starts to spin faster. Over millions of years, more hydrogen gas is pulled into the spinning cloud. The collisions which occur between the hydrogen atoms starts to heat the gas in the cloud. Once the temperature reaches 15,000,000 degrees Celsius, nuclear fusion takes place in the center, or core, of the cloud. The tremendous heat given off by the nuclear fusion process causes the gas to glow creating a protostar. This is the first step in the evolution of a star. The glowing protostar continues to accumulate mass. The amount of mass it can accumulate is determined by the amount ofmatter available in the nebula. Once its mass is stabilized, the star is known as a main sequence star. The new star will continue to glow for millions or even billions of years. As it glows, hydrogen is converted into helium in the core by nuclear fusion. The core starts to become unstable and it starts to contract. The outer shell of the star, which is still mostly hydrogen, starts to expand. As it expands, it cools and starts to glow red. The star has now reached the red giant phase. It is red because it is cooler than the protostar phase and it is a giant because the outer shell has expanded outward. 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 the star will take.
You might be interested in
The genral type of plant food that is produced in the photosynthesis?
____ [38]
B. Carbohydrates
The products of photosynthesis include glucose (a carbohydrate) and oxygen. :D hope this helps
5 0
3 years ago
Read 2 more answers
DNA in the nucleus carries the genetic code for making proteins in ribosomes. The diagram shows a model of DNA. Which part of th
katovenus [111]
The answer is D
The nitrogen bases adenine, thymine, cytosine and guanine code for the amino acid sequence in the protein
3 0
3 years ago
Read 2 more answers
Which of the following is an example of qualitative data?
Romashka [77]
The answer is a because you're not focusing on numbers (quantities), you're simply observing something
3 0
3 years ago
the approach to psychology relies on concepts such as adaptation, reproduction, and natural selection as the basis for explainin
Arlecino [84]

Answer:

<em>Evolutionary approach</em>

Explanation:

Evolutionary psychology can be described as a branch of psychology under which theoretical approaches to certain behaviours and their relationship to evolution and natural selection are studied. In simple terms, this evolutionary approach tends to explain that how evolution has influenced and shaped our mind and our behaviour. It is the relationship between evolution and behaviour and hence shows a broader relationship between the fields of evolution and psychology.

8 0
3 years ago
Which of the following accurately lists the taxonomic groups in order from broad to specific? A. Kingdom, phylum, class, order
Pavlova-9 [17]
<h2>Answer</h2><h3>A. Kingdom, phylum, class, order</h3><h2>Explanation:</h2>

The taxonomic groups are basically used in the scientific classification from most general to most specific. There are seven main taxonomic levels such as kingdom, phylum or division, class, order, family, genus, species. The most specific classification is genus and species. The broadest classifications are by domain and kingdom.

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE ANSWER FAST AND YOU WILL GET 15 POINTS AND BRAINLIEST PLEASE ANSWER BOTH
    13·2 answers
  • You feed a canned dog food that is 75% moisture. When analyzed, it contained 30% crude protein and 1.20% calcium on a dry matter
    11·1 answer
  • In which specimen were cells first identified?
    10·1 answer
  • What are Mitosis Similarities to Meiosis?
    13·1 answer
  • What type of gloves protects your hands from hazardous chemicals?
    8·1 answer
  • The color of a daisy’s petals is a(n) ________, the instructions for which are found in a gene controlling petal color. There ma
    13·1 answer
  • HELP ASAP
    11·1 answer
  • In the family pedigree the majority of individuals that are colorblind are which gender? This is a good indicator that colorblin
    8·1 answer
  • The two pathways fundamentally involved in the physiological response to stress are
    8·1 answer
  • Why does the land on earth appear to be stable when in fact it is changing?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!