Significance of vulcanicity to human activities​

Answers

Answer 1

Answer:Answer: Vulcanicity is useful for production of gases e.g. carbon dioxide used in soft drinks manufacture. (a) Volcanic eruptions cause of life and destruction of property e.g. sulphur dioxide, ash, cinder and lava may bury houses and farm land. (b) Volcanic mountains are barrier to transport and communication.

Explanation:


Related Questions

VOLCANOES 1. What are the three types of volcanoes? a. b. C. 2. Label each volcano profile with the appropriate name listed above: A B с Letter Volcano Type A B C
3. What type of volcanoes make up:

Answers

The three types of volcanoes are not provided in the question. Therefore, a specific answer cannot be given without the names of the volcano types.

The question does not provide the names of the three types of volcanoes. In order to label each volcano profile with the appropriate name, it is necessary to know the specific volcano types being referred to.

Different volcano types include stratovolcanoes (composite volcanoes), shield volcanoes, cinder cone volcanoes, and others. Each volcano type has distinct characteristics in terms of its shape, eruption style, and composition. Without the specific names of the volcano types, it is not possible to accurately label each volcano profile.

To learn more about phenomenon click here: brainly.com/question/6818732

#SPJ11

Astronomers have found that objects in the universe with different masses wind up as very different kinds of "corpses" (have very different final states). What is the size of a planet's corpse

Answers

The size of a planet's corpse, or its final state, depends on several factors, including the mass of the planet and its evolutionary path. When a planet reaches the end of its life, its fate can vary.

For smaller planets, such as Earth, their final state is often a dense, inert core. As a planet ages, its internal processes, such as geological activity and plate tectonics, gradually cease. Over time, the outer layers of the planet can be eroded or lost, leaving behind a solid, rocky core.

In the case of more massive planets, such as gas giants like Jupiter, their final state can be different. These planets have a substantial amount of gas and lack a solid surface. As they age, they may undergo processes such as atmospheric expansion or loss of their outer layers, eventually leaving behind a smaller, dense core.

It's important to note that the term "corpse" is a metaphorical way of describing the final state of celestial objects and is not a literal representation. The actual size and composition of a planet's final state depend on various factors and can differ based on the specific circumstances and processes that occur during its evolution.

To learn more about evolutionary path click here:

https://brainly.com/question/32249800

#SPJ11

Which of the following is not a component of the Perfect Storm? a. The remnants of Hurricane Grace b. A westward moving jet stream c. A pressure low (extratropical cyclone or nor'easter) in the North Atlantic (off of Sable Island)
d. A cold front moving down from Canada heading toward the Atlantic

Answers

The correct option is A, The component that is not a part of the Perfect Storm is the remnants of Hurricane Grace.

A hurricane is a powerful and destructive tropical cyclone characterized by strong winds and heavy rainfall. It is a natural disaster that forms over warm ocean waters and usually occurs in tropical and subtropical regions. Hurricanes are named based on a predetermined list and are categorized on the Saffir-Simpson Hurricane Wind Scale, ranging from Category 1 to Category 5, based on their wind speeds and potential for damage.

The core of a hurricane, called the eye, is a relatively calm and clear area surrounded by a circular wall of clouds and thunderstorms known as the eyewall. The eyewall is where the strongest winds and heaviest rainfall are concentrated. As hurricanes move across the ocean, they can grow in size and intensity, posing a significant threat to coastal areas.

To know more about Hurricane refer to-

brainly.com/question/14836473

#SPJ4

explain how the chemical weathering feedback works. describe each step of the process. is this feedback positive or negative?

Answers

Chemical weathering feedback is an example of a positive feedback loop.

As chemical weathering progresses, minerals in rocks and soil break down into smaller particles that are more susceptible to further chemical weathering. Chemical weathering feedback can result in an increase in the rate and extent of chemical weathering. Here is the process that occurs in the chemical weathering feedback:

Step 1: In this step, chemicals in the environment, such as water or acids, come into contact with rocks and minerals. As the chemical reaction progresses, minerals break down into smaller particles and release ions.

Step 2: In this step, minerals that are released in the first step react with other chemicals in the environment, such as water or other minerals, to produce new minerals.

Step 3: In this step, new minerals are produced, which can then be weathered again by the same or different chemicals. These new minerals are typically more susceptible to weathering than the original minerals, which means that the rate and extent of chemical weathering can increase over time.

Positive feedback occurs when a change in one variable leads to an increase in another variable, which then leads to a further increase in the first variable. In the case of chemical weathering feedback, the breakdown of minerals into smaller particles leads to an increase in the rate and extent of chemical weathering. This leads to further breakdown of minerals and the production of more susceptible minerals, which can then be weathered again. The result is an increase in the rate and extent of chemical weathering, which is a positive feedback loop.

learn more about positive feedback loops: https://brainly.com/question/14724809

#SPJ11

briefly outline how the following indigenous knowledge aspects jave aided in environmentalsustainability(1) Spritually, (2) history ,(3) cultural practices,( 4) social interaction , (5) Language healing .​

Answers

Indigenous knowledge aspects such as spirituality, history, cultural practices, social interaction, and language healing aid in environmental sustainability by fostering a deep connection to nature, preserving ecological wisdom, promoting sustainable resource management, fostering community cohesion, and preserving traditional ecological knowledge.

Indigenous knowledge plays a vital role in promoting environmental sustainability through various aspects.

Spirituality instills a profound reverence for nature, recognizing the interconnectedness between humans and the environment, and driving a sense of responsibility toward ecological preservation.Historical knowledge provides insights into traditional ecological practices and wisdom, enabling communities to adapt and apply sustainable approaches to contemporary challenges. Cultural practices rooted in indigenous knowledge emphasize sustainable resource use, conservation, and respect for ecosystems, contributing to the preservation of biodiversity and ecosystems. Social interaction within indigenous communities fosters collective responsibility, promoting communal decision-making processes and cooperative efforts toward sustainable resource management.Language healing safeguards traditional knowledge systems and ecological understanding, ensuring the transmission of invaluable information about local ecosystems, medicinal plants, and sustainable practices.

Together, these indigenous knowledge aspects provide a holistic framework for environmental sustainability, enhancing ecological resilience, promoting cultural diversity, and fostering a harmonious relationship between humans and the natural world.

For mor questions on indigenous

https://brainly.com/question/29985611

#SPJ8

Which list below contains three rocks that are produced by contact metamorphism? A. Gneiss, quartzite, and anthracite coal B. Quartzite, marble, and hornfels C. Slate, phyllite, and gneiss D. Marble, schist, and slate

Answers

Quartzite, marble, and hornfels are three rocks that are produced by contact metamorphism. Thus the correct answer is option B.

Contact metamorphism occurs when rocks come into direct contact with a high-temperature heat source, such as magma or lava. Heat alters the mineral content and texture of the stones, leading to new rock development. The original rock type and the temperature and length of heat exposure determine the specific properties of the rocks formed.

Quartzite is generated as a result of sandstone metamorphism. The tremendous heat forces the sandstone's quartz grains to recrystallize and fuse together, resulting in a rugged, durable rock with a high quartz concentration.

Marble is formed as a result of the metamorphism of limestone or dolomite. The heat forces the minerals in the original rock to recrystallize, resulting in a smooth, granular rock with various hues depending on the impurities present.

Hornfels is a fine-grained, hard rock formed through the metamorphism of numerous geological types, including shale, mudstone, and volcanic rocks. The high temperature changes the minerals in the original stone, resulting in a solid, homogeneous texture and, in some instances, a gleaming look.

To know more about contact metamorphism

brainly.com/question/30244981

late, Phyllite, and Gneiss. Contact metamorphism is an extreme form of regional metamorphism that occurs when preexisting rocks are subjected to high temperatures and pressures.

The answer is C.

This resulting in pronounced changes in their mineral assemblages and textures without any distinct chemical alteration. The most common rocks produced by contact metamorphism are schists, which are formed by the re-crystallization of sedimentary rocks like mudstone, siltstone, and shale under high pressure and temperature.

Slate, phyllite, and gneiss are other types of contact metamorphic rocks that form when these sedimentary rocks are subject to even higher temperatures and pressures. These rocks tend to be extremely hard and may display folds in their layers, revealing the cataclastic origin.

To know more about Contact metamorphism, click here:

https://brainly.com/question/30244981

#SPJ4

Radio-carbon dating is accurate up to 75,000 years. Why would longer date range?

Answers

Radio-carbon dating is an important tool for archeologists and scientists to determine the age of organic material. It measures the amount of radioactive carbon-14 in organic material to determine its age.

The accuracy of the technique is dependent on several factors, including the amount of carbon-14 in the material, the environmental conditions and the composition of the sample. Because of this, the accuracy of radio-carbon dating is typically limited to around 75,000 years.

For samples of a greater age, radioactive isotopes decay over a longer period of time may be used to determine a longer date range. For instance, potassium-argon dating is used for age ranges exceeding 100,000 years. This method determines the age of igneous rocks and volcanic ash layers, which unfortunately are not suitable for radio-carbon dating.

In addition, archeological context and record research also provide clues to the age of a sample. For example, coins, buildings, pottery, etc. can provide information about the approximate age of the sample based on its associated artifacts. With this in mind, archaeologists can use these research techniques in combination with radio-carbon dating to determine an accurate date range.

To know more about Radio-carbon dating, click here:

https://brainly.com/question/15386678

#SPJ4

Answer:

Radiocarbon dating is a method used to determine the age of an object containing organic material by measuring the amount of carbon-14 remaining in the object. Carbon-14 is a radioactive isotope that is produced in the atmosphere and taken up by living organisms. When an organism dies, the carbon-14 begins to decay and the amount of carbon-14 in the organism decreases over time. By measuring the amount of carbon-14 remaining in an object, scientists can determine how long ago the organism died.

Explanation:

which of the following rivers does not flow in a west-to-east fashion across the great plains?

Answers

Among the major rivers flowing through the Great Plains, the Missouri River does not flow in a strictly west-to-east fashion.

The Missouri River primarily runs in a north-to-south direction. It originates in the Rocky Mountains of western Montana and flows southward, eventually curving eastward as it enters the Great Plains.

While it does have an eastward component to its course, the overall direction is predominantly north-to-south.

In contrast, rivers like the Platte River and the Arkansas River flow from west to east across the Great Plains, traversing the region horizontally. The Missouri River is a significant tributary of the Mississippi River and plays a crucial role in the overall drainage system of the central United States.

To know more about Missouri River refer to-

https://brainly.com/question/13812183

#SPJ11

Complete question

Which river does not flow in a west-to-east fashion across the great plains?

On the windward side of the mountain, should the relative humidity of the parcel change as it rises from 2000 m to 4000 m?
b) Why?

Answers

On the windward side of the mountain, the relative humidity of the parcel should decrease as it rises from 2000 m to 4000 m.

The decrease in relative humidity with increasing altitude on the windward side of the mountain is primarily due to adiabatic processes. As the air parcel ascends the mountain slope, it undergoes adiabatic cooling, which means its temperature decreases without any exchange of heat with the surroundings. As the air cools, its capacity to hold moisture decreases, leading to the condensation of water vapor and the formation of clouds. This condensation process releases latent heat, which partially offsets the cooling effect.

However, as the air continues to rise, it experiences further adiabatic cooling, causing the relative humidity to decrease. The relative humidity is a measure of the amount of moisture present in the air relative to its maximum capacity at a given temperature. Since the air is cooling and its capacity to hold moisture is decreasing, the relative humidity decreases as the parcel ascends the mountain. This process contributes to the formation of precipitation on the windward side of the mountain range.

To learn more about windward side, click here:

https://brainly.com/question/12832049

#SPJ11

Put an X next to the situations below that make landslides more likely.
__ A hurricane saturates the ground with water.
__ A wild fire burns plants and trees in the mountains.
__ Plate tectonics cause mountains to get steeper over time.
__ People water yards, causing water to soak into the ground. Check your answers with another group.

Answers

Yes, a hurricane saturating the ground with water, a wildfire burning plants and trees in the mountains, and people watering yards can all make landslides more likely.

When the ground is saturated with water, it can become unstable and unable to hold up whatever is on top of it. Additionally, burning and removing vegetation can cause the soil to weaken.

Finally, when people water the ground, the soil becomes heavier, increasing the chances of a landslide. All of these factors can work together to make landslides more likely, which can have damaging impacts on the environment and people's lives.

To know more about hurricane , click here:

https://brainly.com/question/14836473

#SPJ4

At an earthquake measuring station the waves that arrive first come at a speed of 4 km/s and the waves that come second arrive at a speed of 1 km/s. If the time delay between the two waves is 4 seconds. How far is the earthquake's epicenter from the measuring station (round the answer to two decimal places)?

Answers

The earthquake's epicenter from the measuring station is approximately 20 km (rounded to two decimal places).

Mentioned that the waves that arrive first at the earthquake measuring station come at a speed of 4 km/s and the waves that come second arrive at a speed of 1 km/s. The time delay between the two waves is 4 seconds. To determine the distance of the earthquake's epicenter from the measuring station, we can apply the formula:

distance = speed x time

Let the distance between the measuring station and the earthquake epicenter be x, and t be the time in seconds it took the first wave to reach the measuring station.

Then, using the formula above, we can express the distance of the epicenter from the measuring station as:

x = 4t  --- Equation 1

Also, the distance of the epicenter from the measuring station is given as:

x = (4 + 1) × 4 km = 20 km  --- Equation 2

Substituting equation 1 into equation 2 and solving for t, we have:

4t = 20km

⇒ t = 20/4

     = 5 seconds

Substitute the value of t into equation 1:

x = 4t = 4 × 5 seconds

  = 20 km

Therefore, the distance of the earthquake's epicenter from the measuring station is approximately 20 km (rounded to two decimal places).

Learn more about the Epicenter here: https://brainly.com/question/4052993

#SPJ11

true or false: the wave heights (10 meters) of the 2011 japan tsunami were unprecedented in japan's history, and thus it is understandable that they were not prepared for it.

Answers

The statement " the wave heights (10 meters) of the 2011 japan t sunami were unprecedented in Japan's history, and thus it is understandable that they were not prepared for it." is true as Japan t sunami were indeed unprecedented in Japan's history.

The tsunami, which was caused by a significant undersea earthquake, was as high as 10 meters (33 feet) in some places along Japan's northeastern coast. Widespread destruction was caused by these incredibly powerful waves, including the nuclear power plant, infrastructure and coastal communities.

Due to its location in a seismically active area, Japan has a long history of dealing with tsunamis. However, the tsunami of 2011 had a magnitude and intensity that had never been seen before. It was extremely difficult to respond to the disaster effectively due to the unprecedented height of the waves and the speed and force with which they struck the coast which overtaxed the infrastructure and existing preparedness plans.

Learn more about Japan tsunami at:

brainly.com/question/29732702

#SPJ4

Which factor affects the size and shape of the barrier island? a. Littoral drift b. Human alterations c. Ocean waves d. Erosion e. All of the above are correct

Answers

The correct option is E, The size and shape of a barrier island can be influenced by various factors, including Littoral drift, Human alterations Ocean waves, and Erosion.

Erosion is a natural process that involves the gradual wearing away or removal of the Earth's surface materials, such as soil, rock, or sediment, by various agents like water, wind, ice, or gravity. It is a result of the combined action of weathering and transportation. Erosion can have significant environmental impacts, including the loss of fertile soil for agriculture, the alteration of river courses, the destruction of habitats, and the increased sedimentation of water bodies.

Water erosion occurs when flowing water, such as rivers, streams, or rainfall, carries away soil particles, creating channels, gullies, or even canyons over time. Wind erosion, on the other hand, occurs when strong winds transport and deposit fine particles of soil or sand, leading to the formation of dunes or the removal of topsoil from agricultural fields.

To know more about Erosion refer to-

brainly.com/question/30587260

#SPJ4

In areas that were major centers of ice accumulation, the land has been slowly:_________

Answers

In areas that were major centers of ice accumulation, the land has been slowly rebounding.

This phenomenon, known as glacial isostatic adjustment or post-glacial rebound, is the gradual rise of the Earth's crust in response to the removal of the weight of ice sheets that once covered those regions during the last ice age. It is a geophysical process that continues to occur over thousands of years after the retreat of glaciers.

During the last ice age, large ice sheets covered vast areas of land, exerting enormous pressure on the Earth's crust. As these ice sheets melted and retreated, the weight on the land was lifted, allowing the underlying crust to slowly rise in response to the removal of the ice load. This vertical movement of the land is known as post-glacial rebound or glacial isostatic adjustment.

To learn more about Rebounding : brainly.com/question/14566022

#SPJ11

a rock specimens contains 30 millimoles of potassium and 30 millimoles of argon. the rock must be __________ billion years old.

Answers

A rock specimen contains 30 millimoles of potassium and 30 millimoles of argon. the rock must be 1.25 billion years.

Rock is a type of naturally occurring solid material that forms a significant part of the Earth's crust. It is composed of various minerals, organic matter, and other substances. Rocks are classified into three main types: igneous, sedimentary, and metamorphic.

Igneous rocks are formed when molten magma or lava cools and solidifies. They can be further categorized into intrusive rocks (formed beneath the Earth's surface) and extrusive rocks (formed on the Earth's surface). Examples of igneous rocks include granite, basalt, and obsidian. Sedimentary rocks are formed through the accumulation and compaction of sediments over time.

To know more about Rock refer to-

brainly.com/question/29898401

#SPJ4

describe and give an example of Temperate deciduous forest

Answers

Temperate deciduous forest can be described as a biome or a type of vegetation characterized by trees that lose their leaves during winter and grow them back in the spring.

This forest covers most of the eastern part of the United States, Europe, parts of Asia, and Eastern China.The temperature range is moderate, with distinct seasons: cold winters and warm summers. The rainfall in these forests is moderate and ranges from 30 to 60 inches annually. These forests typically have four distinct seasons, with temperatures varying between -30 degrees Celsius and 30 degrees Celsius.

The most common tree species found in temperate deciduous forests include oak, maple, beech, birch, and elm, among others.

Example of Temperate deciduous forest:The temperate deciduous forest biome includes examples such as the North American deciduous forest, the European deciduous forest, and the Asian deciduous forest.

These forests can be found in the eastern United States, China, Japan, and Europe. They include hardwood trees that grow tall and can live for a long time. Examples include oaks, elms, hickories, and maple trees. These forests also have a thick understory that is home to many different types of animals, including deer, rabbits, and birds.

To know more about forests ,visit

https://brainly.com/question/28724320

#SPJ11

the mineralogical, structural, textural, and chemical changes that occur below the area of sedimentation and diagenesis are known as .

Answers

The mineralogical, structural, textural, and chemical changes that occur below the area of sedimentation and diagenesis are known as Catagenesis.

What is Catagenesis?Catagenesis is a set of physical, mineralogical, structural, and chemical changes that occur below the sedimentation and diagenesis region. It happens at a temperature of 100 to 200 degrees Celsius. Catagenesis is the second of three stages in the development of sedimentary rocks.

Catagenesis happens when a sedimentary rock's sedimentary structure is altered and new minerals are formed. It is more difficult to distinguish catagenesis from diagenesis because catagenesis happens concurrently with diagenesis. However, diagenesis generally refers to changes that occur when a sediment is buried to a depth of 1 km and is under a pressure of 100 atmospheres. It encompasses the complete spectrum of mineralogical, textural, and structural changes that occur in a sediment as it transforms into a rock.

learn more about Catagenesis: https://brainly.com/question/30801377

#SPJ11

Freak waves usually produced by undersea disturbances are called Select one: a. moraines b. grottos c. moulins d. tsunamis Which of the following is NOT one of the three main criteria that must be examined when choosing an appropriate map Select one: a. projection b. water. c. scale d. theme Vertically developed puffy and globular clouds are classed as Select one: a. cumuliform. b. cirriform. c. stratiform. d. stratocumuliform. e. nimbocirriform.

Answers

In the first question, freak waves produced by undersea disturbances are called tsunamis. In the second question, water is NOT one of the three main criteria that must be examined when choosing an appropriate map.

The three main criteria for selecting an appropriate map are projection, scale, and theme. In the third question, vertically developed puffy and globular clouds are classed as cumuliform. Freak waves produced by undersea disturbances are known as tsunamis.

Tsunamis are large ocean waves typically caused by undersea earthquakes, volcanic eruptions, or landslides. These waves can travel across vast distances, rapidly building up in height as they approach the coastline, and can cause significant devastation when they make landfall.

When choosing an appropriate map, the three main criteria that must be examined are projection, scale, and theme. Projection refers to the method used to represent the curved surface of the Earth on a flat map, impacting the accuracy and distortion of the depicted features.

To learn more about Freak waves : brainly.com/question/6784019

#SPJ11

Post-glacial rebound in the Great Lakes region shows us that:

(a) large glaciers can cause isostatic sinking of continents;

(b) the spatial extent of the last ice sheet went as far south as Florida;

(c) Hudson Bay (Canada) is presently sinking as Michigan is shifting to the west;

(d) a large mantle plume, or "hot spot", melted the ice sheet at about 1,000 years ago.

Answers

The correct option is C) Hudson Bay (Canada) is presently sinking as Michigan is shifting to the west.

Post-glacial rebound in the Great Lakes region shows us that Hudson Bay (Canada) is presently sinking as Michigan is shifting to the west.Post-glacial rebound refers to the upward movement of the Earth's crust following the release of the enormous weight of the glaciers from the last Ice Age. In the Great Lakes region, post-glacial rebound tells us that Hudson Bay (Canada) is presently sinking as Michigan is shifting to the west. This phenomenon is the result of the continued rebound of the land that was once compressed under the weight of the glaciers.In the last Ice Age, enormous glaciers covered much of North America, including the Great Lakes region. These glaciers were so heavy that they caused the underlying land to sink down, a process known as isostatic depression. However, as the glaciers began to recede, the weight on the land was reduced, and the land began to rebound. This process is still occurring today and is responsible for changes in the landscape of the Great Lakes region.

To know more about glaciers:

https://brainly.com/question/28474050

#SPJ11

question 9.9 which band combination(s) is(are) best for separating urban areas from other forms of land cover (i.e., vegetation, trees, etc.)? why?

Answers

In urban areas from other forms of land cover, the best band combination often includes the use of near-infrared (NIR) and red bands. The NIR band is sensitive to vegetation reflectance, while the red band is useful for distinguishing urban areas.

Urban areas refer to regions characterized by high population density and extensive human-made infrastructure. These areas are typically developed and heavily built up, accommodating a significant concentration of residential, commercial, and industrial activities. Urbanization is driven by various factors such as economic opportunities, improved infrastructure, and better access to services.

Urban areas are characterized by tall buildings, roads, transportation networks, utilities, and public amenities like parks, schools, and hospitals. They are often centers of cultural, economic, and political activity, attracting diverse populations and fostering social interactions. Urban areas also exhibit a greater level of diversity in terms of cultures, languages, and lifestyles.

To know more about Urban areas refer to-

brainly.com/question/31535430

#SPJ4

q18. what did you learn about these emitters (e.g., their identity, the structure of the facility, etc.) by zooming in on them?

Answers

These gases upon reaching the atmosphere react with the water to form Nitric and sulfuric acid respectively and falls to earth along with the rain to cause acid rain.

The atmosphere is the layer of gases surrounding a celestial body, such as the Earth. It plays a crucial role in sustaining life and protecting the planet from harmful radiation. Earth's atmosphere is composed primarily of nitrogen (about 78%), oxygen (around 21%), and traces of other gases such as carbon dioxide, argon, and water vapor. It is divided into several layers based on temperature and composition: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

The atmosphere serves multiple functions. It regulates the planet's temperature by trapping heat from the Sun and preventing extreme temperature fluctuations between day and night. It also absorbs harmful ultraviolet (UV) radiation, reducing its impact on living organisms. Additionally, the atmosphere helps distribute heat and moisture around the globe, leading to weather patterns and climate systems.

To know more about Atmosphere refer to-

brainly.com/question/32358340

#SPJ4

Water extraction from the Colorado River has changed the water
supply to northern Mexico
- True
- False

Answers

True. Water extraction from the Colorado River has indeed changed the water supply to northern Mexico. The Colorado River is a significant water source for several states in the United States and northern Mexico. Over the years, due to water diversion and extraction for various purposes such as agriculture, industry, and municipal use, the water flow in the Colorado River has been significantly altered. This has resulted in reduced water availability and changes in water supply patterns for regions in northern Mexico that rely on the Colorado River for their water needs.

Which of the following gives the best evidence for the existence
of dark matter?
A. The orbital speeds of stars in galaxies are higher than what
can be accounted for by the detectable mass in those ga

Answers

The orbital speeds of stars in galaxies are higher than what can be accounted for by the detectable mass in those galaxies, providing compelling evidence for the existence of dark matter.

One of the most significant lines of evidence for the existence of dark matter is the observation of high orbital speeds of stars in galaxies. According to Newtonian physics, the orbital speed of a star within a galaxy depends on the mass contained within its orbit. Based on the visible matter in galaxies, such as stars and gas, the orbital velocities should decrease as one moves away from the galactic center due to the decreasing gravitational pull. However, observations have consistently shown that the orbital speeds remain relatively constant or even increase with distance from the galactic center, defying expectations.

This phenomenon can be explained by the presence of an additional unseen mass component, which is dark matter. Dark matter does not interact with light or other electromagnetic radiation, making it invisible to traditional observational techniques. Its gravitational influence, however, affects the motion of stars and galaxies. The gravitational pull from the dark matter component provides the necessary additional mass to explain the high orbital speeds of stars in galaxies.

Various studies, including observations of galaxy rotation curves and gravitational lensing, have consistently shown that the observed gravitational effects in galaxies far exceed what can be accounted for by the visible matter alone. This strongly supports the hypothesis that there is a significant amount of dark matter distributed throughout galaxies, providing the gravitational force required to explain the observed orbital velocities.

While the exact nature of dark matter remains unknown, its presence and influence on the dynamics of galaxies provide compelling evidence for its existence. The orbital speeds of stars in galaxies being higher than what can be accounted for by the detectable mass in those galaxies is a crucial piece of evidence supporting the existence of dark matter.

To know more about galaxies click here:

https://brainly.com/question/31361315

#SPJ11

Regions that produce surpluses of goods needed elsewhere exhibit ______:
A) complementarity
B) Balkanization
C) supranationalism
D) irredentism
E) local functional specialization

Answers

Regions that produce surpluses of goods needed elsewhere exhibit complementarity. The correct option is A.

Complementarity is demonstrated when regions produce surpluses of goods that are required or desired in other regions. According to the concept of complementarity certain countries or regions specialize in producing particular goods or services based on their comparative advantage and then they trade or exchange those goods with other countries or regions that have a need for them.

As a result, it is possible to trade on the basis of the mutual benefit principle and allocate resources effectively. To increase their productivity and general well being, complementary regions can cooperate in trade and the economy. The correct option is A.

Learn more about Complementarity at:

brainly.com/question/31110702

#SPJ4

Please match the International Initiative to the correct outcome statement. Encouraged countries limit their emissions or reduce them to below 1990 levels. To move to responsible ways of producing and using energy. 1. Kyoto Protocol 2. Copenhagen Accord An agreement to keep the rise of global warming to below 2 degrees C, and to strive to keep it within 1.5 degrees C. 3. Paris Agreement Proposed the creation of a $100 billion per year fund to assist poorest nations with climate change. 3

Answers

The correct matching of the international initiatives to the outcome statements is given here.

Kyoto Protocol: Encouraged countries to limit or reduce emissions below 1990 levels.

Copenhagen Accord: Proposed to move towards responsible ways of producing and using energy.

Paris Agreement: Aimed to keep global warming below 2 degrees C and create a fund to assist the poorest nations with climate change.

The Kyoto Protocol, adopted in 1997, aimed to address climate change by setting binding emission reduction targets for industrialized countries. It encouraged countries to limit or reduce their greenhouse gas emissions below 1990 levels.

The Copenhagen Accord was a political agreement reached in 2009 during the United Nations Climate Change Conference. While it did not have the same legal status as the Kyoto Protocol, it proposed transitioning to responsible methods of producing and using energy, emphasizing the need for sustainable practices.

The Paris Agreement, signed in 2015, sought to combat climate change by keeping global warming well below 2 degrees Celsius above pre-industrial levels, with an ambition to limit it to 1.5 degrees Celsius. Additionally, the agreement proposed the creation of a $100 billion per year fund to assist the poorest nations in adapting to and mitigating the impacts of climate change.

To learn more about international click here: brainly.com/question/31944920

#SPJ11

what are two major global changes affecting the biosphere today

Answers

Answer: Ozone depletion and global warming.

Explanation: What are the two major global changes affecting the biosphere today? Ozone depletion and global warming. Why is the ozone layer important to living things? The ozone layer absorbs ultraviolet light from the sun which can harm organisms.

As the solar system formed, how did the higher proportion of radioactive elements in the protoplanets influence planetary development?

A. It reinforced the compression caused by gravity.

B. It powered the motion of planets toward their final orbits.

C. It provided a heat source to help drive layer differentiation.

D. It altered the elements so planets would have the same compositions.

Answers

Answer:

C. It provided a heat source to help drive layer differentiation.

Explanation:
The higher proportion of radioactive elements in protoplanets aided planetary development by providing a heat source that aided in layer differentiation.

Numerous small bodies known as protoplanets were present during the early stages of the solar system's formation. These protoplanets gradually accumulated mass through collisions and gravitational interactions, eventually maturing into the planets we see today.

Radioactive elements, such as uranium, thorium, and potassium, are unstable and decay radioactively, producing heat as a byproduct. A localised heat source was created because of the presence of these radioactive elements within the protoplanets. As the radioactive elements decayed, they released significant heat energy, contributing to the protoplanet's overall heat budget.

The heat produced by these elements' radioactive decay was critical in driving the process of layer differentiation within the protoplanets. The differentiation of different materials within a planetary body based on their densities is called layer differentiation. The materials within a protoplanet became more molten and wholly or partially melted as the interior heated up due to radioactive decay.

Because of their higher density, heavier elements sank toward the core during this molten state, while lighter elements rose to the surface or formed an intermediate layer. In the case of terrestrial planets like Earth, this process is known as planetary differentiation, and it resulted in the formation of distinct layers such as a metallic core, a rocky mantle, and a crust.

The heat produced by radioactive decay was also crucial in shaping the internal structure of planets. It aided in forming the mantle, a molten or partially molten layer beneath the crust. Convective currents driven by this heat were critical in plate tectonics and material recycling on the planet's surface.

Which is the greatest environmental problem that the world faces today?

Answers

The greatest environmental problem the world faces today is climate change. It refers to long-term shifts in temperature and weather patterns caused primarily by human activities, especially the burning of fossil fuels.

Climate change leads to a range of severe consequences such as rising global temperatures, melting ice caps, more frequent and intense natural disasters, and the loss of biodiversity. It poses significant risks to ecosystems, human health, and the stability of societies worldwide. Urgent and coordinated actions are necessary to mitigate greenhouse gas emissions, transition to renewable energy sources, conserve natural resources, and adapt to the changing climate.

One of the major consequences of climate change is the increase in extreme weather events, including heatwaves, hurricanes, floods, and droughts. These events are becoming more frequent and intense, causing widespread destruction, displacement of people, and loss of life.

To learn more about Climate change :brainly.com/question/32532670

#SPJ11

Which of the following is the best description of configuration management?
a. a thorough change control system to ensure the project produces the desired results
b. a system used to store versions of software code
c. a system used to store versions of documentation on a project
d. a piece of an automated project management system used to set up project variables

Answers

Configuration management refers to a system used to store versions of software code. Option b is correct.

This system is crucial because it allows developers to collaborate effectively. Since it is possible for different developers to work on the same piece of code, configuration management helps ensure that the latest version is always available. In the absence of configuration management, it is difficult to track changes that are made to the code.

Configuration management also provides a safety net in the event that the code is lost, since it is stored in a centralized repository. Overall, configuration management is essential to the software development process because it helps developers work together and ensures the quality of the final product.

Therefore, option (b) is correct.

Learn more about configuration management https://brainly.com/question/13484609

#SPJ11

Type "Mt. Fuji , Japan" into the GE search window) once you arrive there, tilt your frame of view to the north and observe the topography of the mountain from an eye altitude of several kilometers. Use the cursor to measure the peak height above sea level. Which of the answers below best describes the gen- eral shape of Mt. Fuji? a. A large linear fissure in Earth's surface b. A low-relief, very broad shield volcano c. A steep-sided, low-elevation cinder cone d. A high-elevation, steep-sided stratovolcano

Answers

The correct option is D, Mount Fuji, located in Japan, is best described as a high-elevation, steep-sided stratovolcano.

A stratovolcano, also known as a composite volcano, is a type of volcano characterized by its steep conical shape and explosive eruptions. It is formed by alternating layers of solidified lava, volcanic ash, and other volcanic materials. These volcanoes are typically found at subduction zones, where one tectonic plate is forced beneath another.

Stratovolcanoes are known for their violent eruptions due to the high viscosity of their magma. The magma is rich in silica, which makes it thicker and more prone to trap gas bubbles. As pressure builds up, the gas bubbles explode, producing powerful eruptions that can eject ash, pyroclastic flows, and volcanic bombs.

To know more about Stratovolcano refer to-

brainly.com/question/12499374

#SPJ4

Other Questions
What type of correlation thescatter plot shows? Assume Walk-Toki Company is considering offering a new product, Cassio. Why would it matter if Walk-Toki Company knows how much it costs to produce and deliver each Cassio? Jan wants to build a circular pond in his backyard. On the blueprint, the diameter of the pond is 15.5 in. The blueprint has a scale of 3 7/8 in. to 7 feet. What is the actual area of the pond rounded to the nearest tenth? * A rocket is launched from a tower. The height of the rocket, y in feet, is related to thetime after launch, x in seconds, by the given equation. Using this equation, find thetime that the rocket will hit the ground, to the nearest 100th of second.y= -16x2 + 1812 + 59 which data regarding a client with a diagnosis of colon cancer are subjective? When making connections across two texts, you should look for _____, the supporting details, the author's purpose, and whatever they have in common.A.the author's point of viewB.the main ideaC.the organizationD.the author's voice A fitness center is interested in finding a 95% confidence interval for the mean number of days. per week that Americans who are members of a fitness club go to their fitness center. Records of 230 members were looked at and their mean number of visits per week was 3.5 and the standard deviation was 2.7. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ________ distribution. b. With 95% confidence the population mean number of visits per week is between _____and____ visits. c. If many groups of 230 randomly selected members are studied, then a different confidence interval would be produced from each group. About______ percent of these confidence intervals will contain the true population mean number of visits per week and about______ percent will not contain the true population mean number of visits per week. a company manufactures 2 models of mp3 players. let x represent the number (in millions) of the first model made, and let y represent the number (in millions) of the second model made.The company's revenue can be modeled by the equationt(x,y) = 110x + 180y + 3x^2 - 4y^2 - xyFind the marginal revenue equationsrx(x,y)=ry(x,y)=We can acheive maximum revenue when both partial derivatives are equal to zero. Set Rx = 0 and Ry = 0 and solve as a system of equations to the find the production levels that will maximize revenue.Revenue will be maximized when:x=y= Write a letter to your friend describing about your first terminal exams! No spams!!No links!! someone please help!! Which one of the worldview elements listed below deals with issues of right and wrong, and whether there is absolute moral truth? Following negotiations, Office Park, Inc., enters into an informal contract with Quality Janitorial Company for custodial services for Office Park's buildings. This means that the parties' contract: ________ Monthly Transactions TRANSACTIONS FOR FEBRUARY 1 Feb You received a Debit Card from your financial institution and also set up a Pay-by-Phone account. These allow you to use your checking account without actually writing a check Be sure to deduct any fransactions from your checkbook balance. 3 Feb Write Check 109 for $108 to Internet Connections for six months on-line service. 5 Feb Use your Debit Card to pay $46.40 to Best Produce for groceries8. Feb Write Check 110 for $32.81 to National Electric Company for their bill dated February 3, 10 Feb Write Check 111 for $67.14 to Internal Revenue Service for the balance due on your federal income tax Find the area of the semicircle. Round your answer to the nearest whole number, if necessary. semicircle 40cm Need someones help on this! What types of products does Dynamic Steel make (Business or Consumer), and are they a distributor, producer, or merchant wholesaler? How do you know? A large metal pipe has a radius of 5 feet and a height of 15 feet. Find the volume ofthe pipe.pls show your work thx pls :) The origin was used as the center of dilation to dilate quadrilateral ABCD as shown below. Which algebraic representation best describes the dilation that was applied to quadrilateral ABCD to create quadrilateral A'B'C'D? Which of the following is NOT an issue in the reduction of trade protection in agriculture? a. consumption subsidies. b. export tariffs. b. production subsidies.d. import tariffs and quotas. e. export subsidies. Which of the following is true about both stock splits and stock dividends? both have no impact on shareholder wealth both are a prescribed percentage at declaration both are designed to place shares in a trading range both divide firm equity into more pieces all of the answers shown are true of both stock splits and stock dividends Which of these is not a factor influencing dividend policy? changing tax laws flotation costs investment opportunities contraints on dividends capital availability