1) What were the flaws in Lord Kelvin’s theory about:
a. The earth’s origins? (tie in "planetesimal hypothesis")
Answers
Lord Kelvin's theory about the origins of the Earth was based on the assumption that the planet was once in a molten state and that it gradually cooled down over time. He believed that the Earth was initially a fiery ball of gas that eventually solidified to form the crust we know today.
However, Kelvin's theory had several flaws, particularly in his understanding of the planetesimal hypothesis.The planetesimal hypothesis, first proposed by T.C. Chamberlin and F.R. Moulton in the early 20th century, suggests that the formation of planets occurs through the gradual accumulation of small, solid bodies called planetesimals. These planetesimals collide and merge to form larger bodies, eventually leading to the formation of planets.Kelvin, however, rejected this hypothesis and instead proposed that the Earth's formation was due to the collision of two bodies. He believed that the Earth and the Sun were once a single body that was spun off due to the Sun's rotation. This theory, known as the "capture theory," failed to explain many of the observations made about the solar system.Another flaw in Kelvin's theory was his assumption that the Earth's age was only a few tens of millions of years. This was based on his calculations of the Earth's cooling rate and assumed that the planet had started out as a molten ball of gas. However, subsequent research has shown that the Earth is much older than Kelvin had thought, with an estimated age of around 4.54 billion years.
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Related Questions
design an ecotour in USA
Answers
In the United States, ecotourism is frequently carried out in protected places like national parks and nature reserves.
In the United States, ecotourism's guiding concepts and practices are gradually spreading; for instance, several regions' hotels work to increase their sustainability. The International Ecotourism Society defines ecotourism as "responsible travel to natural areas that protect the environment, sustains the well-being of the local people, and incorporates interpretation and education".
The authenticity of the natural environment, particular fauna, a pristine ecosystem with clear interpretive paths, the level of the thrill of its natural phenomena, ecolodges, cultural immersion of locals, and historical legacy can be included as key characteristics of ecotourism design aspects.
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what is altitude
what is altitude in geography
Answers
Answer: Altitude is the height something is above sea level.
Explique os elementos olímpicos: bandeira, lema, tocha e hino:
Answers
Answer:
okey que elementos olimpicos estas buscando aparte de deportivo ser cooperativo compañerimos etc
which of the answer choices is false concerning the development of dead zones in coastal waters, for example, the dead zone in the gulf of mexico?
Answers
One of the false answer choices about the development of dead zones in coastal waters is that they are natural occurrences caused by changes in the climate.
Dead zones occur due to human activities, such as excess nutrients entering the water from agriculture, wastewater, and other sources. These nutrients cause algae to bloom and consume the oxygen in the water, leading to the formation of dead zones. The dead zone in the Gulf of Mexico is a prime example of this phenomenon. Dead zones are defined as areas in the ocean where the oxygen levels are so low that most marine life cannot survive. They are also known as hypoxic zones and are often caused by nutrient pollution from human activities. This nutrient pollution can come from many sources, including agriculture, wastewater treatment plants, and industrial activities. In the Gulf of Mexico, the dead zone is caused by nutrient-rich runoff from the Mississippi River, which carries large amounts of nutrients from agricultural and urban areas in the Midwest. The nutrients cause large algal blooms, which consume oxygen as they decompose. As a result, the oxygen levels in the water drop, making it difficult for marine life to survive. Overall, it is important to manage nutrient pollution to prevent the formation of dead zones in coastal waters.
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Regarding the development of dead zones in coastal waters, all of the answer choices are true. None of the provided answer choices is false when discussing the occurrence of dead zones, such as the one in the Gulf of Mexico.
Dead zones are areas in coastal waters where oxygen levels are severely depleted, leading to the decline or absence of marine life. These zones typically result from excessive nutrient pollution, particularly from agricultural runoff containing fertilizers and other pollutants.
The excessive nutrients, such as nitrogen and phosphorus, stimulate the growth of algae, which depletes the oxygen levels when they die and decompose.
The expansion and persistence of dead zones in coastal waters, including the Gulf of Mexico, have been well-documented. These zones can have detrimental effects on ecosystems, disrupting the food chain and leading to the loss of biodiversity.
Dead zones often exhibit seasonal variations and can vary in size, location, and intensity depending on factors such as nutrient inputs, water circulation patterns, and weather conditions.
Given that all of the answer choices provided are true concerning the development of dead zones, it implies that there is no false statement among them.
The formation and consequences of dead zones in coastal waters are a concerning environmental issue that requires attention and efforts to mitigate nutrient pollution and promote sustainable practices to protect and restore affected ecosystems.
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How does the transmission of protons relate to electric force?
Answers
Answer:
Electric charge is a physical property of matter. ... The matter is positively charged if it contains more protons than electrons, and it is negatively charged if it contains more electrons than protons. In both instances, charged particles will experience a force when in the presence of other charged matter.
Explanation:
why did the islamist militant start graining strength in Africa
Answers
Followers of Dharmic religions, such as Hinduism and Buddhism, __________. A. share a belief in a single god (monotheism) B. believe in a constant cycle of life and rebirth C. follow the teachings of Siddhartha Gautama D. share many of the holy texts of Judaism
Answers
Answer:
B
Explanation:
two magnitude 6 earthquakes occur in the united states on the same day. the first strikes southern utah, while the second hits charleston. which earthquake is likely to cause more damage?
Answers
What are the values of x and y?
Answers
Using similar triangle theorem, the ratios of the sides will give the value of x and y which are 3 and 20 respectively.
What are similar trianglesSimilar triangles are two triangles that have the same shape, but not necessarily the same size. This means that their corresponding angles are equal and their corresponding sides are proportional.
In this problem, to solve for x and y, we need to use take the ratios of two equal sides to find the unknown side.
9/15 = 12 / y
Cross multiply both sides and solve for y
y = 20
Taking another ratio of sides;
(12 + x) / 15 = 9 / 15
12 + x = 9
x = 12 - 9
x = 3
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open star clusters primarily inhabit which part of spiral galaxies?
Answers
Answer:
Spiral arms
Explanation:
Open star clusters primarily inhabit the disk or the spiral arms of spiral galaxies. open star clusters are commonly found within spiral arms.
These clusters are relatively young and contain a few hundred to a few thousand stars that formed together from the same molecular cloud. The disk of a spiral galaxy is where most of the ongoing star formation occurs, and it is rich in interstellar gas and dust, providing the necessary ingredients for the formation of new stars and star clusters. As a result, open star clusters are commonly found within the spiral arms, where the density of gas and dust is higher, promoting the formation of young stellar populations.
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Name two things that can happen if you pump too much water, too fast from your well.on
Answers
Answer:
Pumping too much water too fast draws down the water in the aquifer and eventually causes a well to yield less and less water and even run dry. In fact, pumping your well too much can even cause your neighbor's well to run dry if you both are pumping from the same aquifer.
Explanation:
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the renewable energy source that is least affected by local site considerations is_____.
Answers
The renewable energy source that is least affected by local site considerations is Biomass.
Hence, the correct answer is option b - Biomass.
Biomass Energy:
Biomass energy refers to the energy derived from organic materials, such as plants, agricultural residues, wood, and organic waste. It is a form of renewable energy because the organic matter used for biomass energy can be continually replenished through sustainable practices.
Biomass can be converted into energy through various processes. One common method is combustion, where biomass is burned to produce heat, which can be used directly or converted into electricity. Biomass can also undergo biochemical processes like fermentation to produce biofuels such as ethanol and biodiesel.
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The given question is incomplete. Hence, the complete question is:
"The renewable energy source that is LEAST affected by local site considerations is
A. geothermal power.
B. biomass.
C. large-scale hydro power.
D. tidal power."
Do climate zones tend to occur near certain physical features? Write two short paragraphs to record your findings. Australia map
Answers
Answer:
Yes climatic zone do occur near physical features
Explanation:
Australia is a continent where mainly most of the population live near coastal areas due very high temperature and unconditional wheather due to near equator
evidence that the earths surface is moving
Answers
Hope this helps.
Question 1 of 15
During the migrations in the United States, well-paying jobs have been a:
A. magnet factor.
B. push factor.
C. pull factor.
OD. great attractor.
Answers
Answer:
C. pull factor
Explanation:
Well-paying jobs pull immigrants to migrate to the United States
which of these countries has an economy most similar to that of the former soviet union?
Answers
Answer:
Cuba, North Korea, and the former Soviet Union all have command economies. China maintained a command economy until 1978 when it began its transition to a mixed economy that blends communist and capitalist elements.
In three to five sentences, explain how are Mountains Ranges and Valleys formed
Pls help
Answers
In general, mountain ranges are formed by earthquakes, which are caused by shifting tectonic plates. Therefore, discuss how shifting tectonic plates produce earthquakes, which in turn generate mountain ranges. If you want me to respond, please leave a comment on this page asking for my response.
Valleys often develop over a lengthy period of time as a result of river erosion. When two continental plates contact, mountains are created. The rocks are folded and crushed until a mountain is formed.
How Are Mountains Formed?
The Earth's crust moves, resulting in the formation of mountains. Several sizable, free-floating plates together referred to as tectonic plates make up the crust itself. Over time, these enormous pieces of the Earth's crust can shift and clash because they move within the molten rock or magma.
Despite the fact that people are crust dwellers, these motions are usually not felt by them since they are so slowly occurring and each plate is so enormous. Nevertheless, despite the fact that the movement of plates is what alters the earth's surface's geographical structure, these shifts still have a significant impact on human life. Mountains are formed throughout time in this manner.
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what is the name of the significant port located along the mississippi river close to the gulf of mexico?
Answers
The name of the significant port that is located along the Mississippi River and closer to the Mexican Gulf is the Gulf of New Orleans.
The Gulf of New Orleans is among the most geographically significant ports in the American part of the world. It acts as a great connectivity between the America and other parts of the world. Moreover, being close to the Mississippi River has also helped to develop trade along this port, added to the benefits it receives by being very closer to the Gulf of Mexico.
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what is the theory of plate tectonics
Answers
Not the 2nd or 4th answer.
Explanation:
the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
What are the 10 uses of Aneroid Barometer?
Answers
Answer:
It is often used for reading pressure in homes and recreational boats.
Other uses may include barographs in metrology and altimeters in modern aircraft.
It can store a week's worth of data.
For weather forecasts.
For the Earth's atmosphere.
It is compact, portable and hence can be carried anywhere. It does not contain any liquid and there is no chance of spilling over of liquid as in mercury barometer.
Explanation:
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Some of the earliest examples of economies involved bartering. What is TRUE about a bartering system?
It consists of giving items without the immediate need for payback from the other party.
It allows people to exchange goods without using money or any other type of financial item.
It involves using a type of established and trusted currency to pay for all goods.
It is controlled by the government with no interaction between the buyer and consumer.
Answers
Answer:
B, It allows people to exchange goods without using money or any other type of financial item!
Explanation:
It allows people to exchange goods without using money or any other type of financial item is TRUE about a bartering system.
What is barter system?Barter system are the system in which people exchange the commodities or goods in exchange for goods. This system was practiced in the early times when people do not have the money or coins to purchase the essential items.
Thus, option B is correct.
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Tidal heating is responsible for the activity observed on the surface of Europa. True False
Answers
Answer: True
Explanation:
what are some limits on a access to popular culture
Answers
Answer:
The principal obstacle to popular culture is lack of access to electronic media. Access is limited primary by lack of income. In some developing countries access is also limited by lack of electricity, cell phone service, and other electronic media.
Explanation:
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n a drier region, vegetation growing alongside streams is termed ________. riparian ubac adret motile endothermic
Answers
In a drier region, vegetation growing alongside streams is termed riparian.
Riparian vegetation refers to the plant life that is found along the banks or within the immediate vicinity of a stream or river. This vegetation is specially adapted to thrive in the moist and relatively more fertile conditions provided by the presence of water. It plays an important role in maintaining the overall health and stability of the riparian ecosystem, providing shade, habitat, and food sources for various organisms.
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Calculate What is the diver's gravitational
potential energy just before the dive?
Answers
The diver's gravitational potential energy just before the dive is 0 Joules.
Given,
Mass = 80kg
Height = 10m
Gravitational potential energy= mgh
Gravitational potential energy = 80×9.8×0
Gravitational potential energy = 0 Joules.
Gravitational ability strength is the strength possessed or acquired through an item because of exchange in its position when it's far present in a gravitational area. In easy terms, it can be stated that gravitational capability strength is an energy that is related to gravitational pressure or to gravity.
Gravitational power or gravitational potential energy is the ability of electricity a huge object has when it comes to another large item because of gravity. it's far the potential electricity associated with the gravitational field, that's released whilst the gadgets fall towards each different.
Disclaimer: your question is incomplete, please see below for the complete question.
An 80 kg diver jumps from a 10 m high platform. What is the gravitational potential energy of the diver right before they jump (top of platform)
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Type the correct answer in the box. Spell all the words correctly.
Which type of agreements do some clients make their security agents sign?
Some high-profile clients have their security agents sign *BLANK*
agreements in order to protect their privacy.
Answers
Some high-profile clients have their security agents sign non-disclosure agreements (NDAs) in order to protect their privacy.
A legally binding contract that specifies the sensitive information that a party would receive during their employment or engagement and prohibits them from disclosing or sharing that information with others is called a non-disclosure agreement.
To protect sensitive information regarding the client's personal life, schedule, activities, or any other facts that, if exposed, could jeopardize their privacy or security, NDAs may be used by security agents working for high-profile clients.
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he probability that a randomly selected fatal crash under other light conditions occurs in other weather conditions is approximately.
A. Dark, but lighted is more dangerous in normal weather because the conditional probability of a fatal crash in normal weather is greater than that of a fatal crash in rain.
B. Dark, but lighted is more dangerous in normal weather because the conditional probability of a fatal crash in normal weather is less than that of a fatal crash in rain
C. Dark, but lighted is more dangerous in rain because the conditional probability of a fatal crash in rain is less than that of a fatal crash in normal weather.
D. Dark, but lighted is more dangerous in rain because the conditional probability of a fatal crash in rain is greater than that of a fatal crash in normal weather.
Answers
D. Dark, but lighted is more dangerous in rain because the conditional probability of a fatal crash in rain is greater than that of a fatal crash in normal weather.
The correct answer is D. In dark but lighted conditions, the probability of a fatal crash occurring in rain is higher than in normal weather. This is because the conditional probability of a fatal crash in rain is greater than that in normal weather.
Conditional probability refers to the likelihood of an event happening given that another event has already occurred. In this case, it means that if a crash occurs in dark but lighted conditions, the likelihood of it being fatal is higher in rain than in normal weather.
This increased risk may be due to factors such as reduced visibility and wet road surfaces, making driving conditions more dangerous.
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In five sentences or more explain the African slave trade and its influence on America.
Answers
The slave trade is the trading of people who are slaves as a commodity from one nation to another or from one continent to another. When African slaves were taken to America by the Britishers for plantation or some other works, there they lack basic human rights. So they protested for their rights and freedom.
What are slaves?The slaves are people who are owned by other people and forced to work without pay or autonomy. Slavery is generally considered to be a violation of basic human rights and is illegal in most countries today.
Historically, slavery has taken many forms, but it has typically involved the ownership of individuals as property, with their labor and lives controlled by their masters or owners.
When African slaves were taken to America for plantation or some other works, there they lack basic human rights. So they protested for their rights and freedom.
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The tittle of " the land of morning calm" was given to South Korea by ______.
Answers
Answer:
by westerners missionaries (British, German and American)
Explanation:
the name was given to Korea because of the beautiful views and scenery so the expression was created by westerners who visited
Answer:
In 1934 A.D., an emperor of the Ming dynasty of China, the Celestial Empire of the East, gave Korea the title of ''Chaohsien'' meaning morning freshness.
Explanation:
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Describe the main features of a spit
Answers
Answer:
Spit. ... Spits, which may be composed of sand or shingle, are formed by the longshore movement of sediment. They often are complexly curved, with a characteristic recurved head (hook); this probably results from the refraction of waves around the spit's end.
Explanation:
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