Explain why red giants have very high luminosity even though they have very low surface temperatures:

Answers

Answer 1

Due to its extreme coolness and distance from the center compared to earlier stages of star evolution, the surface will appear red. The red giant has a relatively large surface area, which makes it incredibly bright despite its cooler surface temperature.

What are red giants?

A star that is nearing death is a red giant. It slowly grew to be many times larger than it was initially. A star may remain on the red giant stage for up to a billion years.

The star will then gradually shrink and cool to become a white dwarf, which is an ultra-dense, Earth-sized star corpse that emits only a small portion of its original energy. After many billions of years, these stars will eventually turn completely cold and stop emitting any energy.

They'll pass away as a so-called "black dwarf," a tiny, scorched-out cinder that is essentially invisible.

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Related Questions

A family group in which many generations live together in one home is known as a(n) __________.
A.extended family
B.mixed family
C.nuclear family
D.secondary family

Please select the best answer from the choices provided

Answers

Answer:

A. extended family

Explanation:

What is a common issue among asylum seekers, refugees, and other
migrants?

A. Shelters are overcrowded because of the increasing numbers of migrants,
asylum seekers, and refugees, which increases homelessness for these
groups.

B. Countries cannot keep up with the increased need for services for these
populations.

C. Rejection from locals pushes foreign people to live under precarious
conditions.

D. There are not enough educational opportunities for migrants, refugees, and
asylum seekers.

E. Many landlords ask for proof of identity before renting, increasing home-
lessness among asylum seekers, migrants, and refugees.

Answers

Answer:

A range of comorbid psychological disorders, including post-traumatic stress disorder (PTSD), anxiety, depression, and psychosomatic disorders, are particularly prevalent among asylum seekers and refugees.

Explanation

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how did darwins observations support lyells theory of an ancient earth undergoing continual geologic change

Answers

Based on the scientific research evidence, Darwin's observations support Lyell's theory of an ancient earth undergoing continual geologic change through his observation of marine fossils in the mountains and the uplift of land by an earthquake.

What is Lyell's theory of ancient earth undergoing continual geologic change

According to Lyell's theory of ancient earth undergoing continual geologic change, he argued that the formation of Earth's crust occurred through countless minor changes happening over huge periods

In Lyell's accounts, he suggested that the forces molding the planet today have operated continuously throughout its history.

Hence, when Darwin observed marine fossils in the mountains and the uplift of land by an earthquake which occurred as a gradual and continual process, thus, it is believed that Darwin's observation supports Lyell's theory of evolution.

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The freshwater and saltwater biomes are divided into different levels or zones. What are these levels or zones, and if stated, what kinds of organisms live in the different levels or zones?.

Answers

Fresh water has littoral and limnetic zone and sea water has aphotic zone and intertidal zone .

What kind of animals live in different zones of fresh and sea water?

The littoral zone is the highest area close to a lake or pond's coastline. Due to its shallowness and ability to absorb more heat from the Sun, this zone is the hottest. Several types of algae (including diatoms), rooted and floating aquatic plants, grazing snails, clams, insects, crabs, fishes, and amphibians are among the various community members that it supports. Only the egg and larval stages of insects, such as dragonflies and midges, are present in this area. Other species like turtles, snakes, and ducks consume the plants and animals that inhabit the littoral zone.

The intertidal zone is where the water and land meet; depending on the tides and waves, it may occasionally be submerged and other times exposed. Communities are continually evolving as a result of this. The zone is vertically stratified over rocky coastlines. There are just a few kinds of mollusc and algae that only the highest tides may reach. There is a wider variety of algae and tiny invertebrates, including herbivorous snails, crabs, sea stars, and small fish, in the regions that are often submerged during high tide. There are numerous crustaceans, fish, and seaweed at the bottom of the intertidal zone, which is only visible during the lowest tides. On sandier coasts, the intertidal zone is less stratified than in rocky places.

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18. Island with snow-covered mountains year-round
Mark only one oval.
Oceania
Papua New Guinea
New Zealand
Antarctica
Australia

Answers

Despite the fact that the Zermatt Matterhorn Ski Resort offers a "snow guarantee," the region always has snow.

Is there a island that gets snow?

Namiseom, Chuncheon, South Korea Namiseom is a self-described micronation. It is a tiny island in the North Han River. Even though the island's unique passport, currency, and fierce local pride are all worth seeing, winter is the best time to visit for the pristine snow and magical landscapes.

Which of the mountains has snow all year long?

The Greater Himalayas or Himadri are the names given to these mountain ranges. Along India's northern boundary, it is a massive wall. It rises approximately 5000 meters above sea level on average. This range's summits remain snow-covered throughout the year.

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Question 2
Use the chart to answer the following question:
In which of the following countries is industry a cause of water pollution?

Answers

Answer:

Burundi , Uganda , sudan

Was it the cause of the forest dying or the trigger for subsequent events that killed the forest?

Answers

The  cause of the forest dying  killed the forest.

What do cause the dying of forest?

Forest dieback can be described as the condition  whereby the  trees or woody plants  as well as the  peripheral parts are killed, which could be as a result of pathogens as well as parasites or some natural situation such as the acid rain.

It should be noted that one of the most causes of the  pressures that do bring about deforestation as well as  severe forest degradation are :

Agriculture; some of the agricultural practice do bring about thye dying of trees which do result into deforestation as a result of thepracticee of using chemicals against the trees. unsustainable forest management as well as , mining, infrastructure projects  ; This is another thing that do bring about the death of the trees where people do not plant back when they cut the trees.

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Then your tragedge Now, use your right angle template and straightedge to construct a line parallel to the first line you drew.

Answers

Answer: Two lines are said to be parallel in a plane if they do not intersect each other even if extended till infinite in both the directions.

Steps to construct a parallel line using ruler and compass are:

Draw a line segment AB and mark any point P above the line AB

Draw a line that intersects the first line using a straightedge and mark it as Point X.

Now we get a line AB and a transverse PX.

Open a compass more than half of the distance between PX. Using this, place the compass on Point X and scribe an arc MN on the transverse PX.

Similarly, using the same distance, scribe an arc by keeping the compass on Point P and mark it as EF. The point where EF cuts PX is Q.

Using this Q as a center, draw an arc marked R on EF.

Join this R and P and extend the line segment and mark is as C and D.

The resultant image is given below.

Explanation:

How did the economies of Cuba and Puerto Rico develop after independence from Spain?

Answers

The economies of Cuba and Puerto Rico developed after independence from Spain advancing industrial development and modern infrastructure.

With the end of the Spanish-American War, Americans liberalised Cuba and transformed it into a magnet for US and foreign capital. Puerto Rico became increasingly reliant as it was passed from coloniser to coloniser as a spoil of war.

Due to its dual importance as a maritime enclave and a Spanish colony, the Cuban economy was in a better position after independence to compete in the world market. Alternatively, the Puerto Rican economy faces enormous difficulties, such as severe unemployment and a lack of industry, as a result of the subservient role's ingrained dependency.

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Analyze the map below and answer the question that follows.



The map above shows the countries of the Middle East. Which country is highlighted?
A.
Turkey
B.
Israel
C.
Afghanistan
D.
Iran

Please select the best answer from the choices provided

Answers

Answer:
Afghanistan

Explanation:

Answer:

C. Afghanistan

What are some possible solutions for the immigration issue?

Answers

The current patchwork of policies and programs is mismanaged and broken and it breaks up families. For those currently striving for citizenship, the existing maze of regulations provides no light at the end of the tunnel, because there’s often no line to get into for becoming a fully participating American.

Possible Solutions could be:

Enact legislation that will provide a clear and accessible roadmap to citizenship for undocumented individuals already residing in the United States—including immigrants who were brought to this country as children—and will preserve and advance family reunification, protect the safety and rights of all workers, prohibit enforcement measures that violate due process, and provide for the full integration of New Americans into our society.

Eliminate existing backlogs in family-based permanent (green card) visas by recapturing unused visas and increasing annual visa numbers.

Provide safe, legal means for migration through points of entry.

Increase the number of employment-based permanent visas to reflect market demand for sought-after skills and experience.

Eliminate the existing three- and ten-year bars to admissibility.

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HELPPP Which of the following principles in political geography describes Hawaii in relation to the distribution of U.S. national territory?

Enclave
Perforated state
Fragmented state
Exclave
Sovereign nation

Answers

The principle in political geography which would describe Hawaii in relation to the United States territory is C. Fragmented state.

What is a Fragmented state?

A Fragmented state refers to a nation that has its national territory not completely together. In order words, some of the territory that belongs to the nation are separated either by land belonging to another country, or by the ocean or some other body of water.

Hawaii is a state in the United States but it is located in the pacific ocean and away from the United States. This means that in terms of political geography, Hawaii makes the United States a Fragmented state.

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assuming the impact hypothesis is correct, in what ways) was the impact important to our existence on earth today?

Answers

Assuming the impact hypothesis is correct, It seems unlike that we would have evolved by now without the extinctions caused by the impact.

What is impact hypothesis?In the mid-1970s, researchers put forward the giant impact hypothesis. A new collision hypothesis would have required the Earth to collide with another planet-sized object at the end of its extinctions . This created a large amount of debris in Earth orbit that coalesced to form the Moon.Scientists have proposed many ideas about the formation of the Moon. The leading contender, the giant impact hypothesis, speculates that when Earth was a young planet  just beginning to form, it was hit by another nearby emerging planet called Theia. The Giant Impact Hypothesis is one of the theories about the formation of the Moon. In this theory, a Mars-sized object collided with the Earth at an angle about 4.5 billion years ago, ejecting a large amount of material and forming a disk around the Earth. Out of this disk emerged a giant moon.

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What performance practice of the native andean siku embodies communitarian values?.

Answers

Playing a composition without utilizing the Andean siku's shape stands for group values.

A melody is a group of musical notes that the listener perceives as a single, continuous sound. Other titles for it include a tune, voice, or line.

In its purest form, a melody is a combination of pitch & rhythm; but, the phrase may also apply to other musical components, such as tonal color, in a broader meaning. The melody is made up of two basic musical elements: pitch and rhythm.

A melody is a group of notes that are played in rhythm. Values include things like honesty, integrity, goodness, kindness, boldness, and self-assurance. Using these values, people may determine what is acceptable or unwanted. Values are personal convictions that shape how individuals act. They serve as a guide for proper behavior.

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Why is beach nourishment considered mostly a short-term strategy for fighting beach erosion?.

Answers

Answer: The erosive forces of waves, storms, and rising sea levels do not disappear after nourishment takes place.

Explanation: i just got it right

How can the interconnected nature of these religions (Judaism, Christianity, and Islam) be used to improve the relationship between them?

Answers

Answer:

The connection between these three monotheistic belief systems may be greater than the common eye sees them to be. They share quite a lot of similarities that can be often overlooked. Judaism, Christianity, and Islam share a resemblance with each other when it comes to harmony and peace. They all take these factors very seriously and hold these values very true to themselves in their practice.

Explanation:

HELP!! 100 POINTS AND BRAINLIEST!!!

Choose three possible solutions to the problem. (immigration to the us). Briefly compare and contrast the advantages and disadvantages associated with these solutions. In the table below note three advantages and disadvantages for each solution. BE sure to use research to support your claims.

Answers

Answer:

What are the advantages and disadvantages of immigration?

Immigration can give substantial economic benefits – a more flexible labour market, greater skills base, increased demand and a greater diversity of innovation. However, immigration is also controversial. It is argued immigration can cause issues of overcrowding, congestion, and extra pressure on public services.

Explanation:

Both human and animal wastes are sometimes used as fertilizer. How are the two types treated differently before they are used to fertilize
crops?
O Human waste is used directly; animal waste goes through physical and chemical treatment.
O Human waste is used in solid form, animal waste is used in liquid form
O Human waste goes through physical and chemical treatment, animal waste is used directly.
O Human waste is used in liquid form, animal waste is used in solid form

Answers

Human waste goes through physical and chemical treatment, animal waste is used directly as fertilizer.

Animal waste can be used as fresh manure directly on the soil whereas human waste should be properly recycled so that it contains no harmful bacteria.

Human waste can be used with right heat treatment like composting, all dangerous bacteria can be removed. Bio-solids can also be used.

Animal waste include variety of organic fertilizers like poultry and cattle manure which provides nutrients in soil.

Thus option C is correct.

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Human waste goes through physical and chemical treatment; animal waste is used directly.

Which of the following are characteristics of lower standard of living and quality of life? (choose all that apply)

low infant mortality

high death rate

high life expectancy

low median age

Answers

The following are characteristics of lower standard of living and quality of life:

low infant mortalityhigh death ratelow median age

What is a standard of living?

Standard of living is the grade of income, satistafaction and services available, generally attributed to a society or location, rather than to an individual. Standard of living is relevant because it is considered to apply to an individual's quality of life.

Therefore, the correct answer is as given above

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what development occurred in the 3rd millennium bce to improve cuneiform

Answers

Initially created circa 3200 B.C. Cuneiform writing was produced by Sumerian scribes in the ancient city-state of Uruk, in modern-day Iraq, as a method of recording transactions by making wedge-shaped indentations in clay tablets using a reed stylus.

The Sumerians, who lived in large towns with centralized economies in what is now southern Iraq, are said to have invented writing in approximately 3000 B.C.E. The first tablets with written inscriptions are the product of administrators, may be of significant temple organizations, who recorded the transit and storage of items as well as the distribution of rations.

It became hard for temple officials to rely on memory when they needed to keep track of the grain, sheep, and cattle entering or leaving their stocks and fields.

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What is the flat stretch of rich soil and multiple rivers that starts in France and moves
eastward across Europe?
A. Northern European Plain
B. French Coastal Basin
C. French Piedmont
D. Central European Grassland

Answers

The answer is Northern European Plain

what are some features that are formed due to melting ice from glaciers on Pakistan map?​

Answers

Answer:

Climate change is causing most glaciers worldwide to shrink, but due to a meteorological anomaly, this is one of a few in Karakoram mountain.

Explanation:

There's another way melting ice can cause extreme floods: In the mountains of Pakistan, water from glaciers forms high-elevation lakes, which are often dammed by glacial ice. When there's too much runoff, those lakes quickly expand and the ice dams can break, producing what's called a “glacial lake outburst.” The Himalayan glaciers are melting, and Pakistan is drowning. How is this contributing to the flooding that we're seeing there? KAMP: So Pakistan - you mentioned that already earlier - has over 7,200 glaciers.

where did the indian civilization begin?

Answers

Answer:

it was first discovered in 1921 near the Indus River

Explanation:

Question 2 (1 point) Which landform lies to the east of the Rocky Mountains? Black Hills Cascade Range Sierra Nevada Range Columbia Basin​

Answers

Answer: Black hills

Explanation:

The Black Hills lie to the east of the Rocky Mountains. Thus, option A is correct.

What are the Rocky Mountains?

It's hardly surprising that Rocky Mountain is known across the planet for its breathtaking views given its soaring panoramas that transport tourists to new levels.

The Black Hills, located in South Dakota, are a separate highest mountain that is not a member of the Rocky Mountains. The state's surrounding plains give way to the wooded highlands.

These hardwood hillsides rise several hundred meters above the nearby grassland, seeming dark from a distance. Therefore, option A is the correct option.

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Which of the following are characteristics of higher standard of living and quality of life? (choose all that apply)


low life expectancy

low infant mortality

high literacy rates

high median age

Answers

Answer:

low infant mortality

high literacy rates

high median age

Explanation:

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Complete the sentences about earth’s early biosphere. after earth formed, the emerging biosphere had several effects on earth’s lithosphere. for example, rocks and minerals showed evidence of caused by the presence of oxygen in air. in a second example, actually created new rock after being dissolved in water or buried underground.

Answers

After earth formed, the emerging biosphere had several effects on earth's lithosphere. For example, rocks and minerals showed evidence oxidation caused by the presence of oxygen in air.

In a natural process known as oxidation, molecules have their electrons taken away during a specific chemical reaction. Rocks undergo oxidation when they interact chemically with oxygen, changing the makeup of the rock. On a geological scale, fossilisation causes deceased species (such as plants and animals) to transform into rocks. In conclusion, oxidation was visible in rocks and minerals. Additionally, after being dissolved in water or buried underground, ORGANISMS really produced new rock.

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Answer:

I believe the first blank is oxidation; and the second blank being minerals.

Explanation:

sorry if I'm wrong.

How does the racial makeup of the population in Haiti in 1789 help to explain why a rebellion started?

Answers

The rebellion started because of the unfulfilled hopes of and the harshness of slave masters, and inspiration from the French Revolution were among the factors that led to the Haitian Revolution.

Slaves had evolved into military commanders, then into full-fledged citizens. The Americas were affected by their acts. The Haitian Revolution developed into a crucial point of discussion in discussions about slavery, emancipation, and race throughout the 19th century and beyond. It served as inspiration for some.

The Haitian Revolution is the name given to the biggest and most successful slave insurrection in the Western Hemisphere. Slaves began the insurrection in 1791, and by 1803 they had been successful in ending both slavery and French rule in the colony.

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Given a topographic map explain how you would determine the elevation of a mountain using key terms contour, contour line, contour interval, elevation and relief

Answers

True, topographic map explain how you would determine the elevation of a mountain using key terms contour, contour line, contour interval, elevation and relief.

What is topographic map ?

According to Suparno and Endy (2005) , the definition of topographic map is a map that depicts the shape of the Earth's surface through a number of elevation lines related to the slope of the land and the slope of the interior slopes of the planet Earth.

This map also describes about relief, hydrography, vegetation, transportation, and regional toponymy.

Elements contained in a topographic map include:

title, map coordinates, geographic coordinates, grid coordinates, map number, map scale, map year, map direction, declination, contour lines

In conclusion, topographic map is a map that give us an explanation of the elevation of a mountain using key terms contour, contour line, contour interval, elevation and relief.

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What are the three main jobs of congress ?

Answers

Answer: Raising revenue, declaring war, and making all laws necessary for executing these powers.

Explanation:

what feature is not associated with karst regions? losing streams sinking creeks caverns subterranean drainage systems rock towers meandering floodplains

Answers

The feature that is not associated with karst regions is meandering floodplains. Thus last option is correct.

What is the significance of the Karst region?

As soluble rocks like limestone, dolomite, and gypsum dissolve, a terrain known as karst is created. In addition to sinkholes and caverns, it has subsurface drainage networks.

The features associated with the karst region include losing streams, sinking creeks, caverns, subterranean drainage systems, and rock towers. When the bottom rock is soluble, karst landscapes with particular hydrology and morphologies develop.

Therefore, the last option is appropriate.

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What effect did the Scopes trial have? need help its history What is the wavelength of light with a frequency of 3.215 x 10^15 s-?A. 9.325 x 10^-8mB. 3.110 x 10^-16mC. 1.072 x 10^7 mD. 9.639 x 10^23m Question 4 of 10One of the best ways to research a college is to: The measures of two complementary angles are described by the expressions (11x11) and (16x7). Find the measures of the angles.I know complementary when their measures add to 90 degrees. but I'm not to sure where to plug the numbers in In Python: Write a program to input 6 numbers. After each number is input, print the smallest of the numbers entered so far.Sample Run:Enter a number: 9Smallest: 9Enter a number: 4Smallest: 4Enter a number: 10Smallest: 4Enter a number: 5Smallest: 4Enter a number: 3Smallest: 3Enter a number: 6Smallest: 3 12)50 students took a quiz with five questions. The frequency table below shows the results of the quiz. Use the frequency table to answer the following questions. ValueFrequencyRelative FrequencyCumulative Frequency040.084180.1612260.1218320.04204150.3355150.350a)How many students answered exactly 3 questions correctly?Number of students answered exactly three questions = 2b)How many students answered less than 3 questions correctly?c)What proportion (percent) of students answered exactly 4 questions correctly? A vine called the mile-a-minute weed is known for growing at a very fast rate. It can grow up to 0.5 ft per day. How fast in inches per hour can the mile-a-minute weed grow up to? Show your work using the correct conversion factors. Find the circumference and area of each. Round for the nearest tenth:1) a circle has a radius of 2 meters2) a circle has a diameter of 16 cm3) a circle has a radius of 8ft4) a circle has a diameter of 11 cm Bart has a cylindrical pitcher with a radius of 6 cm and a height of 12 cm and a height of 12 cm he pours 1,300 cubic centimeters of lemonade into the pitcher approximately how much lemonade will a pitcher hold Mark to review later..3. Javier purchased a laptop at an electronics store 57 days ago for $385. The store's policy states that items can be returnedwithin 60 days for 90% of the original purchase price. Items can still be returned after 60 days, but there is an additional restockingfee of 2%. If Javier returns the computer today, what is the total amount he will receive as a refund What were some major reasons for the Reformation? 3x - 5y = 2 4x + 5y = 33 PLEASE HELP IM DESPERATE AND NEED THE ANSWER NOW WILL GIVE BRAINLIEST 50 POINTSABC has a right angle at C, BC=9.2 centimeters, and mA=63.What is CA ?Enter your answer rounded to the nearest tenth in the box. A pack of cinnamon-scented pencils sells for $8.00. What is the sales tax rate if the total cost of the pencils Is $8.56 The sales tax rate is ___% The equation a +c = b+c demonstrates an examples of which property?O The distributive propertyO The addition property of equality O The commutative propertyO The associative property Zinc metal reacts with HCl according to the balanced equation:Zn + 2HCl ZnCl2 + H2When 0.103 g of Zn is combined with enough HCl to make 50 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.5 C to 23.7 C. Find the heat of the reaction. (ans: -160 kJ/mol) a deep dish pizza can be classified as what 3 dimensional object One of the largest carnivals has 25 rides and accommodates 120 people on each ride. If every ride was was completely full 4 nights this week, how many people will the carnival accommodate during those 4 nights? what is the y-intercept of the function y=-/cos(3/2x)