Dark matter refers to mass that does not emit, absorb, or interact with light or other electromagnetic radiation, making it invisible and difficult to detect. It is not related to mass disappearing into a black hole or made of anti-matter whose effects cancel those of gravity.
Dark matter is not mass that disappears into a black hole but still exerts gravitational attraction on nearby objects (option A) or mass made of anti-matter whose effects cancel those of gravity (option B).
Instead, dark matter is believed to be a type of matter that does not interact with light or other forms of electromagnetic radiation, hence the term "dark." Its presence is inferred from its gravitational effects on visible matter, such as stars and galaxies.
Dark matter is a hypothetical form of matter that is believed to make up a significant portion of the total matter in the universe. It does not emit, reflect, or interact with light or any other form of electromagnetic radiation, which is why it is called "dark." Its existence is inferred from its gravitational effects on visible matter and the way it influences the motions of galaxies and galaxy clusters.
Dark matter is thought to be composed of non-baryonic particles that have not yet been directly observed or identified. While its exact nature remains a mystery, scientists continue to study and search for evidence of dark matter through various astrophysical and cosmological observations.
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when a stream is in a v-shaped valley running on bedrock, the stream is ________.
When a stream is in a V-shaped valley running on bedrock, the stream is called an incised stream.
What are incised streams?An incised stream is a term that refers to a stream or river that flows through a channel that is significantly lower than the surrounding landscape. This may result from changes in the elevation of the land through tectonic or volcanic processes, as well as a stream or river eroding into the earth.
A V-shaped valley is typical of incised streams.Incised streams have a high energy level, which means they can erode the landscape quickly. They may be difficult to navigate, and can be dangerous if the water is flowing too quickly or the bedrock is unstable. Because of their ability to carve through the landscape, incised streams are often responsible for shaping canyons, gorges, and other distinctive geological features.
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Meteorological station A is located on an Aegean island at an altitude of 25m and records annual rainfall for the year 2020 equal to 482mm. It is requested to calculate the annual rainfall for the same year at the average altitude of the river basin (330m) if the terrain is mild.
The annual rainfall for the year 2020 at the average altitude of the river basin (330m) can be calculated based on the rainfall recorded at meteorological station A, located at an altitude of 25m.
To estimate the annual rainfall at the average altitude of the river basin, we can make use of the altitude effect on rainfall. Generally, as altitude increases, the amount of rainfall tends to increase due to the orographic effect. However, if the terrain is mild, the increase in rainfall with altitude may not be as significant.
In this case, the meteorological station A recorded an annual rainfall of 482mm at an altitude of 25m. To calculate the annual rainfall at the average altitude of the river basin (330m), we can use the concept of a lapse rate. The lapse rate is the rate at which temperature or other atmospheric variables change with altitude.
Assuming a mild terrain, we can approximate the average lapse rate for rainfall to be around 7% per 100 meters of elevation. Using this approximation, we can estimate the change in rainfall with respect to the change in altitude.
The difference in altitude between meteorological station A (25m) and the average altitude of the river basin (330m) is 330m - 25m = 305m. Dividing this by 100m and multiplying by the lapse rate of 7%, we get (305/100) * 7% = 21.35%.
To calculate the annual rainfall at the average altitude of the river basin, we can apply this percentage increase to the rainfall recorded at meteorological station A.
Annual rainfall at the average altitude of the river basin = 482mm + (482mm * 21.35%) = 482mm + 102.91mm ≈ 584.91mm.
Therefore, the estimated annual rainfall for the year 2020 at the average altitude of the river basin (330m) is approximately 584.91mm.
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Which correctly describe cyclonic and anticylonic winds in the Northern and Southern Hemispheres? Which correctly describe cyclonic and anticylonic winds in the Northern and Southern Hemispheres? Anticyclonic winds are counterclockwise in the Northern Hemisphere. Cyclonic winds are counterclockwise in the Southern Hemisphere. Anticyclonic winds are clockwise in the Southern Hemisphere. Cyclonic winds are counterclockwise in the Northern Hemisphere. Cyclonic winds are clockwise in the Northern Hemisphere.
Answer:
dacă și părul tău mut este rece prea flamingo oh oh oh drăguțul tău col
Explanation:
describe and give an example of Subtropical xerophytic
forest
Subtropical xerophytic forest is a forest that is characterized dry or rid climate or environment and plants that are found in such forest can adapted in such environment they are characterized with deep tap root with which enable them to store water which their major tool for adaptability and home to different kind of animals, rodents, birds, and various reptile species.
Examples of Subtropical xerophytic forestExamples of Subtropical xerophytic forest are found in dry or rid climate are The Guanica Forest Biosphere Reserve in Puerto Rico. ,thorn forest in India Sonoran-Sinaloan Subtropical Dry Forest in Northern Mexico etc.
Example of Xerophytes plants are different species of cactus such as jumping cholla cactus, barrel cactus, organ pipe cactus ,palms ,torote prieto (elephant tree ) ,Agave ,Acacia trees ..Oleander Mesquite .Condea emoryi (desert lavender),euphorbias ,cacti,scrub oak. etc.
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What does the parable of the lost sheep explain? Use complete sentences.
Help fast I will give Brainlyest so please help
Answer:
In a religious standpoint, the parable of the lost sheep, which comes from the Holy Bible, essentially states that Jesus (the shepherd in the story), would go out of his way to find the sinners (the lost sheep), and bring them back to God. It can also be taken in the context that the lost sheep are those who do not believe, and that the shepherd would go and 'save' them, or convert them to Christianity. Essentially, it is God's promise to go out to save those who stray from the path.
explain the relationship between temperature difference and the probability of precipitation
Answer:
As average temperatures at the Earth's surface rise, more evaporation occurs, which, in turn, increases overall precipitation. Therefore, a warming climate is expected to increase precipitation in many areas.
Explanation:
(hope this helps)
Question 5 Multiple Choice Worth 2 points) Which of the following conditions leads to hurricane season in the Atlantic region? O wind speeds in the Atlantic Ocean warm waters in the Atlantic Ocean O high pressure zones over the Atlantic Ocean O high wind speeds in the upper atmosphere above the Atlantic Ocean
When high-speed winds build an upper layer over the Atlantic Ocean, the circumstances that lead to hurricane season in the Atlantic area are favorable. as a result, Option d
What is the definition of hurricane season?The Atlantic hurricane season is when the majority of tropical storms in the northern Atlantic Ocean are likely to form. The season is now defined as the period from June 1 to November 30, however, it was formerly classified as a shorter period.
The Atlantic hurricane season peaks on September 10th, with the majority of activity taking place between mid-August and mid-October.
As a result, option d represents the appropriate hurricane season circumstances.
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What is an example of extreme weathers?
Answer:
An example of extreme weathers is a blizzard, hurricane, thunderstorm.
Explanation:
Hope this helped Mark BRAINLIEST!!!
before the industrial revolution, how long did a carbon atom stay in the atmosphere, on average?
Before the industrial revolution, the average residence time of a carbon atom in the atmosphere was significantly longer compared to the present day.
A revolution is a significant and often radical change that occurs within a society, typically involving political, social, or economic transformations. It is a period of intense upheaval and widespread disruption, characterized by a fundamental shift in power dynamics and the overthrow of existing systems or structures. Revolutions arise in response to grievances and discontentment among the population, fueled by various factors such as inequality, oppression, political corruption, or economic hardships.
During a revolution, the established order is challenged and replaced with a new system or ideology. This process often involves mass mobilization, protests, demonstrations, and sometimes even armed conflict. Revolutions have been instrumental in shaping the course of history, from the American Revolution and the French Revolution to the Russian Revolution and the Chinese Revolution.
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Why is the Eastern terai of Nepal cooler than the Western one?
Answer:The eastern Terai is cooler than the western one because it is closer to the sea (Bay of Bengal).
Help Please!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Layer A is youngest after tilting because tilting did Layer A small.(But I am not sure I hope it's help!)
Explanation:
Boomtowns are developing in India as a result of
overpopulated slums
the outsourced IT sector
British colonialism
the secondary economic sector
discoveries in gold and silver
The reason why boomtowns are developing in India is due to the secondary economic sector.
What are boomtowns?
A boomtown can be described as a town or an area that is under going very rapid growth in their economy.
As a result of the fact that the economic sector is growing, this would lead to a rise in the growth of the area.
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The part of the Earth ON which the tectonic plates are able to move is the
Answer:
Mantle
Explanation:
The land circled on the map above can best be described as __________.
A.
suitable for cattle ranching
B.
suitable for crop farming
C.
generally unproductive land
D.
suitable for dairying
Answer:
suitable for crop farming
Which of the following sedimentary features would you expect to see in sand deposited as wind-blown dunes?
graded bedding
cross bedding
poor sorting
mud cracks
In sand deposited as wind-blown dunes, you would expect to see features such as cross bedding and poor sorting. The correct answer is option b and c.
Cross bedding is a characteristic sedimentary structure in which layers of sand are inclined or cross-cut each other. It forms as the wind transports and deposits sand grains at different angles, resulting in distinct cross-bedded layers. Poor sorting is another common feature in wind-blown dune deposits.
It occurs because wind tends to sort sediments by size, with finer grains being carried away and leaving behind coarser sand grains. As a result, the deposited sand tends to have a limited range of grain sizes, leading to poor sorting.
Graded bedding and mud cracks, on the other hand, are not typically associated with wind-blown dunes. Graded bedding forms in environments like underwater turbidity currents, while mud cracks develop in areas with fluctuating water levels and desiccation.
The correct answer is option b and c.
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Complete question
Which of the following sedimentary features would you expect to see in sand deposited as wind-blown dunes?
a. graded bedding
b. cross bedding
c. poor sorting
d. mud cracks
Which factor did NOT drive the development of Pittsburgh during the Industrial Revolution?
Access to navigable waterways
Areas designated for trade and commerce
A strong basic sector of the economy
Residents with higher levels of education
Solid infrastructure
In general, how do surface temperatures vary from the equator toward the poles? What is the likely cause of this variation?
Surface temperatures vary from the equator towards the poles in the following ways:The equator region has high temperatures compared to the regions located at the poles.
The poles experience cold temperatures due to the low angle of incidence of solar radiation. The heat from the sun is distributed over a larger area as it travels further towards the poles. Also, the earth's rotation causes the earth's axis to be tilted which causes differences in the angle of incidence of solar radiation.
These cause differences in the temperature of the earth surface towards the poles. Therefore, the likely cause of variation in surface temperatures from the equator toward the poles is the distance from the sun, the angle of incidence of solar radiation, and the earth's tilt.
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The term “human capital flight” describes the migration of __________.
A.
criminals seeking to avoid capital punishment in their home country
B.
key individuals from the capital city of their home country
C.
bureaucrats to the capital of the host country
D.
highly trained or skilled professionals away from their home country
Answer:
Hey mate.....
Explanation:
This is ur answer.....
D. Highly trained or skilled professionals away from their home country.Hope it helps!
mark me brainliest pls.....
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Answer:
D. highly trained or skilled professionals away from their home country
Explanation:
The term human capital flight refers to the emigration/immigration of highly skilled workers from low-income countries to higher-income countries.
Describe the effects of global climate change on biodiversity as
well as the influence of the biodiversity crisis on global climate
change and suggest steps that can be taken to overcome both
problems
Global climate change has been observed to have several negative effects on biodiversity. Biodiversity refers to the variety of living organisms on earth, including genetic, species, and ecosystem diversity.
Climate change has led to rising temperatures and changes in precipitation patterns, which have altered the natural habitats of various organisms. For instance, species that are unable to adapt to these changes have been forced to migrate or risk extinction.Therefore, Global climate change affects biodiversity through altering natural habitats, changing seasons and precipitation patterns, and causing extreme weather events such as droughts and floods. As a result, the loss of biodiversity also has a significant impact on global climate change.
For example, deforestation and other land-use changes can release large amounts of greenhouse gases into the atmosphere, thereby exacerbating global warming. To overcome both problems, a combination of measures will be necessary.
These include: Developing and implementing climate change mitigation strategies to reduce greenhouse gas emissions and slow the rate of global warming Protecting and restoring natural habitats and ecosystems, which will help to conserve biodiversity as well as capture and store carbon Providing financial incentives to support biodiversity conservation and climate change mitigation Researching and promoting the use of renewable energy sources Reducing meat consumption to reduce greenhouse gas emissions caused by livestock production Encouraging public education on the importance of biodiversity and the effects of climate change.
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if you were standing on the moon and saw the earth in it's full phase, in what phase would the moon be in?
Answer:
The phases are always the reverse of each other. When we see the moon as nearly full, any moon people would see a slim crescent Earth. When we see a completely full moon, the moon, Earth and sun are in a line – with Earth in the middle.
Explanation:
If you calculated the relative number of magnitude X earthquakes compared to the number of magnitude (X+1) earthquakes. Which statement best represents what you calculated. The Energy released in one magnitude (X+1) earthquake was far larger than all of the magnitude X earthquakes combined. The number of any magnitude earthquakes are random The large number of small earthquakes release more energy than the few large earthquakes.
Calculating the relative number of magnitude X earthquakes compared to the number of magnitude (X+1) earthquakes allows us to understand the magnitude of energy that is being released from different earthquakes.
Generally, an earthquake of a higher magnitude releases much more energy than an earthquake of a lower magnitude. This means that for every magnitude (X+1) earthquake, there are likely to be many more magnitude X earthquakes that together do not even equal the same energy released from the larger magnitude earthquake.
Therefore, it is not correct to say that the large number of small earthquakes release more energy than the few large earthquakes, as this is not true. The number of earthquakes and their magnitude is also random and unpredictable, making the relative number of earthquakes of varying magnitudes hard to determine.
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3. Write about the Greek war with Persia. Discuss the
culture, influence, and governmental organization of Persia. How in
the world were the Greeks able to resist the vast and mighty
Persian Empire? I
The Greek war with Persia was a significant conflict that occurred between the Persian Empire and various Greek city-states in the 5th century BCE. Persia had a rich culture, strong governmental organization, and significant influence in the region.
The Persian Empire, under the Achaemenid dynasty, encompassed a vast territory and had a diverse and influential culture. Persia had a centralized government led by a powerful ruler, known as the Great King, and had established an efficient administrative system. They also exerted influence through their military might and tribute collection from conquered regions.
The Greeks, on the other hand, had several advantages that allowed them to resist the Persian Empire. Firstly, the geography of Greece, with its mountainous terrain and numerous islands, provided natural barriers that made it challenging for the Persians to deploy their forces effectively. Additionally, the Greeks displayed a remarkable sense of unity during the war, coming together despite their political differences to form a united front against the Persian invaders.
The Greeks also had superior naval tactics, demonstrated notably in the Battle of Salamis, where their smaller but more maneuverable ships outmaneuvered the Persian fleet. Furthermore, the Greeks possessed a strong sense of national identity and pride, valuing their independence and freedom. This motivated them to resist the Persian Empire's attempts at conquest and defend their way of life.
In combination, these factors contributed to the Greeks' ability to resist and ultimately repel the Persian Empire. The Greek city-states' strategic advantages, unity, naval tactics, and national identity played crucial roles in their successful defense against the mighty Persian Empire.
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A planetary nebula expands at 28 km/s. How far will it expand
(in km) in 4 million years? km
The planetary nebula expands at a rate of 28 km/s. To determine the distance it will expand in 4 million years, we can multiply the expansion rate by the given time.
To calculate the distance the planetary nebula will expand in 4 million years, we multiply the expansion rate of 28 km/s by the time of 4 million years.
This can be calculated using the formula: distance = rate × time. Plugging in the values, we have distance = 28 km/s × 4,000,000 years. Performing the multiplication, we find that the nebula will expand approximately 112,000,000 km in 4 million years.
Therefore, in the given time period, the planetary nebula will expand about 112 million kilometers.
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Describe the daily life of a farmer during the months of
summer during the wet monsoon.
Answer:
Monsoons produce the very wet summers and dry winters that occur on nearly all of 2015, it began to rain in Mumbai, India, and it did not stop until the next day. From June to August, which are summer months in the Northern Hemisphere, of what is typical during the wet season and farmers could not plant their crops.
Write one sentence summarizing this map.
Answer:
This is the drainage map of africa
Where did many surviving European Jewish people resettle after World War II?
4. cirques and horns are glacial erosional features associated with . a. alpine glaciers b. continental glaciers c. glacial outwash deposits d. glacial deposition deposits
Cirques and horns are glacial erosional features associated with alpine glaciers. Option A is the correct answer.
What are cirques and horns?
A cirque is a bowl-shaped hollow that is shaped like an amphitheater. It is carved by alpine glaciers. A cirque is an erosional feature formed as a result of the plucking of rocks by glaciers. Cirques are generally located at the head of a valley glacier, where snow and ice accumulate, and they may be up to several kilometers across. This type of glacial erosion forms steep ridges and sharp peaks that jut up into the sky above a glacier.
Horns are spires of rock that are sharpened by glaciers. They are formed as a result of the cirques. Horns are high, sharp, and jagged peaks that are shaped like pyramids. They are created as several cirques cut into the mountain from different sides until only one peak remains in the middle. Examples of horns are the Matterhorn in the Alps and the Hornli ridge in Switzerland.
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Need help on this question asap please
Answer:
Impacts of Egypt's Aswan Dam
Building a jetty can have negative consequences for beach nourishment, so why do people build them? To stop the birds from eating sunbathers food. To funnel currents into a marina. To protect the beach from smaller waves, To keep an entryway to a harbor open.
People build jettys for a variety of reasons. One of the most common is to protect the beach from smaller waves and currents that can erode the beach shoreline.
Jettys are also commonly built as an entryway to a marina, to keep the waterway deep enough for boats to navigate through. Additionally, jettys are sometimes used to create a funnel for currents to carry sediment and sand to a specific place, such as a beach, to replenish lost sand contributing to beach nourishment.
Finally, jettys may also be used to keep birds away from beachgoers - for example, in areas where seagulls may try to steal food from sunbathers. As such, while jettys can have negative effects on beach nourishment, they may have positive impacts in other areas which make them worth the risk.
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4. a "river" of high-speed ocean water, part of the florida current, passes in closest proximity to ______ coast.
Answer:
Florida's
Explanation:
The "river" of high-speed ocean water, known as the Gulf Stream, passes in closest proximity to the Florida coast.
The Gulf Stream is a powerful and swift ocean current that originates in the Gulf of Mexico and flows along the eastern coast of the United States. It carries warm water from the tropics northward along the Florida coast and then veers eastward towards the Atlantic Ocean.
As it flows along the Florida coast, the Gulf Stream is closest to the eastern coast of the state. The warm waters of the Gulf Stream have significant impacts on the region's climate, marine ecosystems, and even navigation. It influences weather patterns, provides habitat for diverse marine species, and can influence ocean currents and ship routes.
The proximity of the Gulf Stream to the Florida coast makes it an important feature of the region, both ecologically and economically.
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