what is the life of a star ​

Answers

Answer 1
A star is born once it becomes hot enough for fusion reactions to take place at its core. Stars spend most of their lives as main sequence stars fusing hydrogen to helium in their centres. The Sun is halfway through its life as a main sequence star and will swell up to form a red giant star in around 4.5 billion years.

Related Questions

6. Which statement explains why tectonic plates move?*
10
A. Plates move because Earth's interior is slowly cycling.
B. Plates move because they are slowly expanding and growing larger.
C. Plates move because landforms cause them to move in different
directions.
D. Plates move because of the weight of the oceans pressing on parts of
Earth's surface.

Answers

Answer:

a.B

Explanation:

the plates grow larger and move causing earthquakes and volcanic eruptions.

Tectonic plates move because they are slowly expanding and growing larger.

What is tectonic plates?An enormous, unevenly shaped slab of solid rock known as a tectonic plate also known as a lithospheric plate is typically made up of both continental and oceanic lithosphere.The Pacific and Antarctic Plates are among the largest, however plate sizes can range from a few hundred to thousands of kilometers broad.The Earth's crust and uppermost mantle are divided into enormous fragments called tectonic plates. Oceanic and continental crust both make up their structure.Mid-ocean ridges, as well as the significant faults that delineate the boundaries of the plates, are subject to earthquake activity.Tectonic plates move because they are slowly expanding and growing larger.

To learn more about Tectonic plates refer to:

https://brainly.com/question/2325633

#SPJ2

What does population decline lead to

Answers

Answer:

Explanation:

A nation's population declines when the fertility rate drops, which results in the aging of the population and a reduction in the size of the young labor force. As a result, society gradually loses the creativity and aggressiveness associated with younger people.

Answer:

aging of the population and a reduction in size of the young labor force losing less creativity and agression with young people

Ocean water has higher levels of oxygen than air.

Answers

Answer:

true

Explanation:

Answer:

true

Explanation:

i had this question on edge

Segment addition crossword

Answers

Answer:

Ummm. Wat?

Explanation:

Answer:

wht u r trying to say????????

Where are most of Europe's agricultural fields are located?

A) Northern European Plain

B) None of these answers is correct

C) Along the Mediterranean Sea

D) In the coastal Nordic regions

Answers

Correct answer is D I did this I got it right

The European Union was formed in response to the World Wars. It is a unit of 28 member nations working to form a cohesive political and economic system. Which of the following is not a goal of the European Union?
A.Promote peace on the continent

B.Promote pro-democracy governments

C.Promote individual currencies to help countries keep a sense of nationalism

D.Promote growing the collective economy of the union over the economy of individual member countries.

Answers

The answer would be C.
Hope this helps

Answer:

B.

Explanation:

Please select the word from the list that best fits the definition measures wind speed weather vane, barometer, radar, statellites, thermometer, anemometer

Answers

The answer is an anemometer

Answer:

anemometer

Explanation:

What type of power was first used in the north?

steam
oil
coal
water

Answers

Answer:

coal i believe.

Explanation:

have a good day

A region based on common properties such as population is called an?

Answers

Answer: Formal Region

Explanation: Formal Region is the correct answer.

Formal region like the other person said up above. That’s correct for the question.

The outermost electrons is an atom's electron cloud are called ____

A. sons

B. isotopes

C. valence electrons

D. neutrons

Answers

Answer:

I think its c but i may be wrong.

Explanation:

Other Questions
What formula is used to determine the expected value for a variable? 9. What did the Olive Branch Petition ask the King to do? What is the best definition of the word pall as used in this sentence?Her audience's attention began to pall as Catherine's speech kept going and going.dwindleculminatewaxheighten Where are most of Europe's agricultural fields are located?A) Northern European PlainB) None of these answers is correctC) Along the Mediterranean SeaD) In the coastal Nordic regions Identify the slope and y- intercept of the linear equation.y = -2x + 5Slope: y-intercept: which sentence best rewrites the following line so that that it includes hyperbole?Jackson lived for a long period of time in a small i need a well-written summary about the Greek god Apollo. and pls hurry! In the winter, a town has a low of -5F. Inthe summer, the same town has a high of98F. What is the difference in temperature?[? ]F What is the equation in point slope form for a linear function with a slope of m=4 that passes through the point (2,7)? Josh heated a certain amount of blue copper sulfate crystals to get 2.1 g of white copper sulfate powder and 1.4 g of water. What is most likely the mass of the blue copper sulfate that he heated and why? what happens all by itself because the nucleus is unstable A region based on common properties such as population is called an? Bodhi has a collection of 175 dimes and nickels. The collection is worth $13.30. Which equation can be used to find n, the number of nickels in the collection?0.1n + 0.05(n 175) = 13.300.1n + 0.05(175 n) = 13.300.1(n 175) + 0.05 = 13.300.1(175 n) + 0.05n = 13.30 Why is it important the order we write the vertices of a triangle in a congruent statement? SELECT ALL THAT APPLY! The middle letter is the vertex of the angle. The order tells us what sides are congruent. The order does not matter The order tells us what angles are congruent. Do przygotowania jednej porcji gofrow potrzeba 1 i pul szklanki maki pszennej, 1i jedna trzecia szkalanki mleka oraz 0,5 szkalnki oleju pszennego. Szklanka maki wazy 16 dag, szklanka mleka-24 dag, a szklanka oleju-21,5 dag.Ile dekagramow waza lacznie skladniki potrzeba na jedna porcje gofrow? greek gods and goddess The Monroe Doctrine affected, OAfrica O Asia OEurope OThe Middle East? The author of this passage explores the idea of a four day school week.Identify one argument that explains an advantage, and one argument thatpresents a disadvantage, of a four day school week. Be specific. Yourexamples should come directly from the text. Be sure that your responseis written with correct grammar and punctuation." 7th grade math , Ill give brainliest suppose that the life distribution of an item has the hazard rate function of what is the probability that