The temperature corresponding to that peak wavelength is 3.717 x 103 K.
The peak wavelength of the background radiation at the time that light left the most distant galaxies we can see (redshift z=12) can be calculated using the equation
λ = 2.998 x 10-3/(1 + z).
Inserting z=12 yields a peak wavelength of
λ = 2.498 x 10-4 m.
The temperature corresponding to this peak wavelength can be calculated using the equation T = hc/λk where h is Planck's constant, c is the speed of light, λ is the peak wavelength, and k is Boltzmann's constant.
Inserting the given values yields a temperature of T = 3.717 x 103 K.
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how has the sun caused changes in global and hemispheric temperatures over the past millennium? how did global temperatures change during the 20th century? what evidence exists for carbon dioxide as the main cause of global warming from the pre-industrial times to the present?
The sun has caused changes in global and hemispheric temperatures over the past millennium by influencing the amount of solar energy reaching the Earth.
What is the cause of Global warming?The changes in the sun’s energy output over time have had a significant impact on Earth’s climate, including temperature changes.
Global temperatures increased during the 20th century, with the 10 warmest years on record occurring since 1998. This warming trend has been attributed to an increase in greenhouse gas concentrations, primarily carbon dioxide, caused by human activities such as burning fossil fuels.
Evidence for carbon dioxide as the main cause of global warming from pre-industrial times to the present includes measurements of atmospheric carbon dioxide concentrations, which have risen from about 280 parts per million (ppm) in pre-industrial times to over 400 ppm today. This increase is consistent with the burning of fossil fuels, which release large amounts of carbon dioxide into the atmosphere.
Additionally, climate models that include the effects of human-caused greenhouse gas emissions are able to accurately reproduce observed global temperature changes, further supporting the idea that human activities are causing the Earth to warm.
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5. [5 pts] You're studying genotypes at a gene that you've discovered contributes to Inflammatory bowel disease (IBD). The gene has two alleles: W and v. WW homozygotes produce, on average,
2.2kids
. Wv heterozygotes also produce, on average,
2.2
kids. However, w homozygotes are more likely to have the disease, and therefore, produce, on average,
1.7
kids. What is the relative fitness of the vV genotype? show your work
The relative fitness of the vV genotype can be calculated by comparing it to the relative fitness of the WW genotype. Since WW homozygotes produce, on average, 2.2 kids, and wv heterozygotes also produce, on average, 2.2 kids, then the relative fitness of the WW genotype is 1.0.
Since w homozygotes produce, on average, 1.7 kids, then the relative fitness of the vV genotype is (1.7/2.2) = 0.77. This means that the vV genotype has a lower relative fitness than the WW genotype.
This difference in relative fitness between the WW and vV genotypes is due to the fact that w homozygotes are more likely to have the disease, which reduces their reproductive success.
This is an example of natural selection in action, as individuals with the WW genotype have a higher relative fitness than individuals with the vV genotype, and so the WW genotype is more likely to be passed on to future generations.
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When does flooding occur?
a. When the amount of water exceeds the capacity of the land
b. When the amount of water exceeds the capacity of the rainfall
c. When the amount of water exceeds the capacity of the river's channel. The excess water overflows the river's banks and spills out across the flood plain. D. Prolonged rainfall leading to the satiation of the ground
Flooding occurs when the amount of water exceeds the capacity of the land or the rainfall. The correct option is B.
This can happen due to several reasons, such as heavy rainfall, melting snow, or a high tide. When the capacity of the river’s channel is exceeded, the excess water overflows the river’s banks and spills out across the flood plain. Prolonged rainfall can also lead to flooding, as the water will saturate the ground and begin to pool in low-lying areas.
In addition, flash floods can occur when a heavy rainstorm or thunderstorm happens in a very short period of time, making it difficult for the ground to absorb the water. In any case, when flooding occurs, it can result in significant damage to property, infrastructure, and the environment, making it important to take precautions to prevent flooding where possible. The correct option is B.
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A field that gets flooded is more likely to be contaminated with E. coli.
true or false
Answer:
Flooding, can also introduce pathogens to your garden including E. coli, salmonella, hepatitis A and norovirus, according to research done by North Carolina State University. The risk of pathogens being introduced to a garden increases if livestock or pet areas are nearby, or if there's a compost pile in the garden.
Explanation:
The given statement "A field that gets flooded is more likely to be contaminated with E. coli" is true because when flooding occurs, it can cause several issues that increase the likelihood of E. coli contamination.
Firstly, floodwater often contains a mix of pollutants, including sewage and animal waste, which are common sources of E. coli. As the floodwater spreads across a field, it can disperse these contaminants, making it more likely that E. coli bacteria will be present.
Secondly, the excess water from flooding can lead to soil erosion, which may disrupt natural barriers that help prevent E. coli contamination. For example, healthy soil typically contains beneficial microbes that can compete with and inhibit the growth of harmful bacteria like E. coli. However, when the soil structure is damaged due to flooding, these protective features may be diminished.
Lastly, flooding can also create favorable conditions for E. coli growth. E. coli thrives in moist environments, and the waterlogged soil in a flooded field can provide an ideal habitat for the bacteria to multiply. Furthermore, flooding can lead to nutrient-rich runoff from nearby sources, such as agricultural lands, which may provide additional nutrients that support E. coli growth.
In conclusion, a field that gets flooded is more likely to be contaminated with E. coli due to the potential presence of pollutants, disruption of natural soil barriers, and the creation of favorable conditions for bacterial growth.
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On the map of Asia, the star is marking which of the following countries?
China
Japan
North Korea
South Korea
Answer:
The star is marking South Korea on the map of Asia
People on Simeulue Island knew to run to high ground when a very large ______ occurred in 2004 because they remembered their ancestors stories of large waves following ground shaking.
Answer: tsunami
Explanation:
Examine the flutes/flute casts on the sample (i.e., rotate and zoom in on the 3-D sample). Based on your observations of the flute geometries and knowing how these flute casts form, label the sample with the correct flow direction and top/bottom interpretation. (A) Upstream / Bed Top Upstream / Bed Bottom Downstream / Bed Top Downstream / Bed Bottom
The preserved remains of water running over and eroding sediments are known as flute casts, also known as sole marks.
What does softer sediment do?Softer sediment must cover the exposed surface and fill in the structures that the water has eroded in order to be preserved. A small dip is swept by the water, with a sharp angle on the upstream side and a lower angle on the downstream side.
Turbidity currents are the most prevalent geologic phenomenon that cause flute castings (underwater sediment slides).
Based on the observation of the flute geometries, the correct flow direction and top/bottom interpretation is done below.
By examining the flutes/flute casts geometries on the sample, the current direction is marked on the sample below. (see image)
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2 to power 5 times 2
Answer:
64
Explanation:
(2^5) * 2 =
64
What is the direction of monsoon winds when they enter India and move back?
The direction of monsoon winds when they enter India is from the southwest, while the direction of monsoon winds when they move back is northeast.
What is a monsoon? A monsoon is a seasonal change in atmospheric circulation and precipitation that happens in the tropics and subtropics. During the winter, the monsoon usually carries cold and dry air, whereas in the summer, it brings warm and humid air.
The wind reversal patterns during monsoons are caused by differences in temperature between the continents and oceans. As a result of the Earth's tilt and its annual movement around the sun, the northern hemisphere is tilted toward the sun in summer and away from it in winter.
Therefore, during the summer, the continents warm up more than the oceans, and the air over the continents rises, causing a low-pressure zone. The air from the ocean then flows towards the low-pressure area, bringing rain to the continent.
When the monsoon winds enter India, they come from the southwest, and when they move back, they come from the northeast. The southwest monsoon, which brings rain to the Indian subcontinent, occurs from June to September, while the northeast monsoon, which mainly affects the southeastern coast of India, occurs from October to December.
The Indian summer monsoon is one of the world's most crucial weather patterns, as it provides water to India's billion-plus population, sustains its agriculture, and is responsible for the country's overall economic growth.
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the study of the alignment of magnetic minerals in rock, specifically as it relates to the reversal of earth’s magnetic poles; also the magnetic properties that rock acquires during formation is called?
The study of the alignment of magnetic minerals in rock, particularly in relation to the reversal of the earth's magnetic poles, is referred to as paleomagnetism. Paleomagnetism is the scientific study of the history of the Earth's magnetic field. It is an important tool for studying the Earth's ancient magnetic field and its behavior over time.
Paleomagnetism is a branch of geophysics that has grown in popularity over the last few decades. This technique is used to determine the orientation of the Earth's magnetic field in the past. Paleomagnetism has the ability to measure the magnetic field of rocks at various times in history. By analyzing the magnetic properties of the rocks, researchers can better understand how the Earth's magnetic field has changed over time.
When rocks form, they become magnetized in the direction of the Earth's magnetic field at that time. The minerals in the rock align themselves with the magnetic field, leaving a record of the Earth's magnetic field. This magnetization remains frozen in the rock, providing scientists with a record of the Earth's magnetic field at the time the rock formed.
Paleomagnetism has several applications, including geologic dating, tectonic plate reconstructions, and the study of continental drift. Paleomagnetism has contributed to our understanding of the history of the Earth's magnetic field, including its reversals and fluctuations, and its impact on the Earth's climate and life.
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HOW CAN ABUSE OF POWER FROM THE
CENTRAL GOVERNMENT OF A STATE LEAD TO
DEVOLUTION?
The statutory delegation of powers from a sovereign state's central government to govern at a subnational level, such as a regional or local level, is known as devolution. It is a type of decentralization in the administration.
How does devolution work?Devolution is the process of handing over power to subnational (state, regional, or local) authorities from a central government. Instead of changing a nation's constitution, devolution typically occurs through traditional statutes; Because the subnational authorities' powers can be withdrawn at any time by the central government, unitary systems of government with devolved powers in this manner are still considered unitary rather than federal systems (compare federalism).
Governments have historically tended to concentrate power in one location. However, at the end of the 20th century, groups in both federal and unitary systems became increasingly interested in devolving power to local or regional governments in order to weaken central governments.
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The early atmosphere on Earth was _____.a. mostly carbon dioxide
b. extremely cold
c. full of oxygen
d. hot
The early atmosphere on Earth was mostly carbon dioxide.
So, the correct answer is A.
What is the atmosphere?An atmosphere is the blanket of gas that surrounds a planet or other celestial object. Earth's atmosphere, which is mainly composed of nitrogen and oxygen, contains small amounts of other gases. The atmosphere can be broken down into several different layers. Troposphere, stratosphere, mesosphere, thermosphere, and exosphere are the five layers of the Earth's atmosphere. The early atmosphere of Earth was mostly carbon dioxide.
The atmosphere of the Earth comprises a variety of gases, including oxygen, nitrogen, argon, and carbon dioxide. These gases are unevenly distributed in the atmosphere due to the Earth's rotation, atmospheric pressure, and other factors. The majority of the Earth's atmosphere is composed of nitrogen (about 78 percent) and oxygen (about 21 percent). Other gases make up the remaining 1% of the atmosphere, with trace amounts of other elements and compounds contributing to the air we breathe.
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sort each statement below into the appropriate bin based on whether it is something that scientists knew about pluto or its moon charon before the new horizons flyby, is something learned as a result of the new horizons flyby, or is something that seems possible from the new horizons mission but for which we'll need additional data to establish it with certainty.
Pluto and Charon are tidally locked: This is something that scientists knew about Pluto and its moon Charon before the New Horizons flyby. Tidal locking occurs when an object's orbital period is the same as its rotational period, meaning that the same side of the object is always facing the other.
In this case, the same sides of Pluto and Charon are always facing each other as they orbit one another. The likelihood of this happening was predicted before the mission based on the distance between Pluto and Charon and the gravitational forces between them, and the New Horizons flyby confirmed this to be the case.
Charon has a tenuous atmosphere: This is something that was learned as a result of the New Horizons flyby. Before the mission, scientists suspected that Charon may have an atmosphere, but data from New Horizons showed that the atmosphere is much more substantial than expected.
The flyby revealed that the atmosphere is composed mostly of nitrogen and methane, and is about 100,000 times thinner than Earth's atmosphere. Additional data is needed to establish the atmosphere's exact composition and other details.
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what the four mechanisms that cause air to rise and create clouds?
There are four lifting mechanisms that form clouds: Orographic Lifting, Convection, Convergence, and Updraft.
Convection: This occurs when warm air rises because it is less dense than cooler air. As the warm air rises, it cools and its moisture condenses into visible clouds. Convection is common in areas with strong solar heating, such as the tropics.
Orographic lifting: This occurs when air is forced to rise as it encounters a mountain or other topographic barrier. As the air rises, it cools and its moisture condenses into clouds. Orographic lifting can create significant amounts of precipitation on the windward side of a mountain range.
Convergence: This occurs when air flows into a region from different directions, causing it to pile up and rise. As the air rises, it cools and its moisture condenses into clouds. Convergence is often associated with the formation of thunderstorms.
Frontal lifting: This occurs when warm air and cold air collide, with the denser cold air wedging underneath the warmer air and lifting it. As the air rises, it cools and its moisture condenses into clouds. Frontal lifting is often associated with the formation of mid-latitude cyclones and their associated precipitation.
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rock that has formed from lithification of any type of sediment, including clastic or chemical sediments, or organic remainsa.weathering b. metamorphicc. lavad. igneouse.magma f.erosion g.sedimentary h. protolith
Rock that has formed from lithification of any type of sediment, including clastic or chemical sediments, or organic remains is known as sedimentary rock. Therefore the correct option is option G.
Sedimentary rocks are classified into three groups. These are: clastic, chemical, and organic sedimentary rocks. Clastic sedimentary rocks
Clastic sedimentary rocks are made up of pre-existing rock fragments that have been eroded, transported, and deposited by wind, water, or ice. Examples of clastic rocks are shale, sandstone, and conglomerate.
Chemical sedimentary rocks Chemical sedimentary rocks are formed when dissolved minerals are precipitated out of water. Examples of chemical rocks are limestone and gypsum.
Organic sedimentary rocks Organic sedimentary rocks are made up of the remains of once-living plants and animals. Examples of organic rocks are coal and chalk.
Sedimentary rocks are typically formed in layers, known as strata, and often contain fossils of ancient plants and animals.
Therefore the correct option is option G.
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In the ocean near antarctica, small crustaceans called krill eat algae and other phytoplankton. krill are eaten by many animals in the ocean, including blue whales, penguins, and fish such as herring. based on this information, which food web correctly shows the flow of energy in this ecosystem?
The food web in the ocean near Antarctica can be described as follows: The primary producers are the algae and phytoplankton, which are then eaten by the primary consumers, the krill.
The krill are then eaten by the secondary consumers, such as blue whales, penguins, and herring. These secondary consumers are then consumed by tertiary consumers, such as seals and other predators.
Finally, the tertiary consumers are eaten by decomposers, such as bacteria and fungi, which break down the organic matter and release energy back into the environment. This cycle of energy flow is what sustains the marine life in the ocean near Antarctica.
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What is the original rock that forms metamorphic rock called?
The original rock that forms metamorphic rock is called a parent rock or protolith.
What is parent rock?This can be any type of rock, such as sedimentary, igneous, or even another metamorphic rock.
The mineral composition, texture, and structure of the parent rock determine the characteristics of the resulting metamorphic rock. Through the process of metamorphism, the parent rock is transformed into a new rock with different physical and chemical properties.
Examples of common parent rocks include shale, granite, and limestone.
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Which man-made feature has allowed for the shipment of goods and resources more effectively from the Middle East to Europe?
Panama Canal
Mediterranean Sea
Suez Canal
Nile River
Suez Canal is the man-made feature has allowed for the shipment of goods and resources more effectively from the Middle East to Europe therefore the correct option is c.
The Suez Canal is an artificial ocean- position raceway connecting the Mediterranean Sea to the Red Sea. It's one of the world’s most strategically important aqueducts, furnishing a pivotal trade route between Europe, Asia, and Africa. Construction of the conduit began in 1859 under the supervision of French mastermind
Ferdinand de Lesseps. It took 10 times to complete, with the sanctioned opening taking place in November 1869.
Hence the correct option is c.
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what happens when a glacier encounters the sea or a lake?
Answer:
Icebergs form
Explanation:
Large blocks of ice collapse off the the front of the glacier and become icebergs.
which organisms were alive when new york state was last covered by a continental ice sheet?
New York State was last covered by a continental ice sheet about 12,000 years ago. The organisms that were alive when the last continental ice sheet covered New York State were the tundra animals.
These animals could survive in the cold, harsh climate and adapt to the ice sheet's rapid changes. Woolly mammoths, giant ground sloths, musk oxen, and woolly rhinoceroses are among the animals that existed during this period. Many organisms, on the other hand, were unable to survive in the harsh tundra environment and eventually went extinct.
The extinction of large mammals in North America occurred simultaneously with the last major glaciation, which occurred approximately 10,000 years ago. The harsh environmental conditions caused the migration of organisms to warmer regions, resulting in the loss of many species' biodiversity.
New York State was a barren wasteland throughout the time it was covered in ice. The last continental ice sheet in New York State gave rise to a number of unique habitats and creatures, making it an exciting time in the state's history.
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large metallic objects that are clustered in bands called _____
Answer:
Large metallic objects that are clustered in bands are called "asteroid belts".
the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle is called
Answer:
Lithosphere
Explanation:
The lithosphere is the solid, outer part of Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure.
Metamorphism can transform a shale composed of clay (Diagram A) into a metamorphic rock containing many different minerals (Diagram B). The metamorphism of a pure quartz sandstone, however, yields a metamorphic rock containing only quartz. Why? Choose one: A. Quartz in a shale is different than quartz in a sandstone, so it will behave differently under metamorphic conditions. B. The sandstone is made up only of quartz (silicon and oxygen), and there are no other combinations these elements can be arranged into except polymorphs. C. Quartz is a very resistant mineral and does not undergo any metamorphic processes when subjected to intense heat and pressure.
Metamorphism can transform a shale composed of clay (Diagram A) into a metamorphic rock containing many different minerals (Diagram B). The metamorphism of a pure quartz sandstone, however, yields a metamorphic rock containing only quartz because Quartz is a very resistant mineral and does not undergo any metamorphic processes when subjected to intense heat and pressure. The correct option is c.
The process of metamorphism involves changing the protolith, an existing rock, into a new rock with a different mineral composition or texture. The rock remains essentially solid throughout the metamorphism process, which happens at temperatures above 150 °C (300 °F), as well as frequently at high pressures or in the presence of chemically active fluids. Weathering and diagenesis, which are changes that occur at or near the Earth's surface, are not the same as metamorphism.
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The first three eons in the geological time scale are known as the _____ because they preceded the _____ period.
Answer: eons and era
Explanation:
The Hadean, Archean, and Proterozoic eons together are called the Precambrian eons, which preceded the Cambrian period.
Explanation:The first three eons in the geological time scale are collectively known as the Precambrian eons, because they preceded the Cambrian period. These eons, which are the Hadean, Archean, and Proterozoic, spanned from the formation of Earth about 4.6 billion years ago until the start of the Cambrian period around 541 million years ago. During the Precambrian eons, life forms were simple, mostly microorganisms and simple multicellular organisms.
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Which of the following factors describe the metamorphic conditions at a mid-ocean ridge? -low temperature -low pressure -hot, watery fluids.
The factors that describe the metamorphic conditions at a mid-ocean ridge are hot, watery fluids.
What are mid-ocean ridges?Mid-ocean ridges are linear underwater mountain chains that run along tectonic plate boundaries. They are found where two tectonic plates diverge or move away from each other.
Mid-ocean ridges account for about 20% of the Earth's surface area. They also have a major role in oceanic crust formation.
Metamorphic conditions at a mid-ocean Ridge
The following are the factors that describe the metamorphic conditions at a mid-ocean ridge:
Hot, watery fluids - Hot water with minerals like sodium and calcium is released through hydrothermal vents on mid-ocean ridges. This process is called hydrothermal metamorphism. These fluids react with the minerals in the surrounding rock, resulting in the formation of new minerals and rock textures.
Low pressure - Hydrothermal vents on mid-ocean ridges are under very low pressure due to the high pressure of the surrounding ocean water. The low pressure allows minerals and hot water to circulate freely, resulting in the formation of new minerals and rock textures.
Low temperature - Hydrothermal fluids in mid-ocean ridges have a lower temperature than those in continental settings. However, they are still hot enough to cause metamorphism in the surrounding rock.
Your question is incomplete but most probably your full question was:
Which of the following factors describe the metamorphic conditions at a mid-ocean ridge? Select all that apply.
-low temperature
-low pressure
-hot
- watery fluids.
- dry land
- weather
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fill in the blank question. special rocks found in antarctica are dated with isotopes to give an average age of earth of 4.55 billion years. we can use these dark-colored
Dark-colored rocks found in Antarctica are an important source of information about the age of the Earth. These rocks are dated using isotope techniques to determine their age, which can provide an average age of Earth of 4.55 billion years.
The isotopic dating process involves measuring the relative concentrations of different isotopes in the rocks, which can tell us how long ago they were formed. The process is useful because the relative concentrations of different isotopes remain relatively constant over time, which allows us to accurately measure the age of the rocks.
The data obtained from the rocks helps to provide a more accurate age of the Earth and confirms the scientific theory that the Earth is 4.55 billion years old. Thus, these dark-colored rocks found in Antarctica provide important evidence for the age of the Earth.
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what land extends from central mexico to costa rica?
The land that extends from central Mexico to Costa Rica is called the Mesoamerican region.
The Mesoamerican region is a cultural and geographical area in the Americas, extending from central Mexico to Costa Rica. This region is known for its rich and diverse cultural history, including the rise and fall of ancient civilizations such as the Maya, Aztec, and Olmec.
According to archeological evidence, the Mesoamerican region is considered to be one of the six cradles of civilization in the world. This region has many natural resources, such as fertile land, forests, and minerals, which made it an attractive area for early civilizations to settle and flourish.
In summary, the land that extends from central Mexico to Costa Rica is called the Mesoamerican region. This region is known for its cultural and geographical significance and was home to ancient civilizations such as the Maya, Aztec, and Olmec.
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Mudstone and shale are not split into two rock types by some geologists. Geologists that do classify them differently do so because mudstone has more ______ than the typical shale.
Mudstone and shale are often seen as two very similar rock types and some geologists do not classify them separately. However, geologists that do classify them differently generally base their decision on the amount of clay present in each rock type.
Mudstone typically has a higher amount of clay than shale and is considered to be a more clay-rich sedimentary rock. This is because mudstone is made from very fine-grained sediment which has been compacted and hardened into a solid. In contrast, shale is made from silt and fine sand-size particles which are generally less clay-rich than mudstone.
As a result, when looking at the two rocks in thin section, mudstone is much more clay-rich and has a higher clay content than shale. This difference in clay content is what allows geologists to differentiate between mudstone and shale.
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what volcanic eruption was the loudest in modern history?
Answer:
Explanation:
The loudest volcanic eruption in modern history was the 1883 eruption of the Krakatoa volcano, which is located between the islands of Java and Sumatra in Indonesia. The explosion was so powerful that it was heard over 3,000 miles away, and it produced a sound that is estimated to have reached 172 decibels at a distance of 100 miles from the source. The eruption caused widespread damage and loss of life, with tsunamis and other effects felt across the region.
which force is responsible for the movement of tectonic plates?
Answer:
Convection in the mantle.
Explanation:
The driving force behind plate tectonics is convection in the mantle. Hot material near the Earth's core rises, and colder mantle rock sinks. Heat and gravity are fundamental to the process.