False. The classification of high and low islands is based on their geological formation, not their latitude. High islands are typically volcanic and have rugged terrain with high elevations, while low islands are coral atolls and have relatively flat terrain with low elevations. The Oceania/Pacific region is indeed comprised of thousands of islands, but their classification as high or low is not determined by their latitude.
The Oceania/Pacific region is home to thousands of islands that are geologically diverse. One way that these islands are classified is by their geological formation into high and low islands. High islands are typically formed from volcanic activity and have rugged terrain with high elevations. They are often found near tectonic plate boundaries and near the poles. In contrast, low islands are coral atolls that have formed over millions of years as coral reefs grow on top of submerged volcanoes. These islands have relatively flat terrain with low elevations and are typically found near the equator.
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during metamorphism, would you expect to find aligned, flattened grains in a rock that has undergone heating but has not been subjected to differential stress? why?
Aligned and flattened grains are typically found in a rock that has been subjected to differential stress, rather than in a rock that has undergone heating but has not been subjected to differential stress.
During metamorphism, this is a key difference. Differential stress is defined as stress that is not applied uniformly in all directions, whereas uniform stress is stress that is applied uniformly in all directions. In a rock that has been subjected to differential stress, aligned and flattened grains would be expected because the pressure is not distributed uniformly, which causes the grains to align perpendicular to the direction of stress.
Heating alone will not cause grains to align in this manner because there is no directional stress that causes the grains to move or rotate, and the rock is typically subjected to uniform heating in all directions.
Therefore, the grains will not align or flatten, and instead will maintain their original position and shape. In summary, aligned, flattened grains are typically found in a rock that has been subjected to differential stress, rather than in a rock that has undergone heating but has not been subjected to differential stress. During metamorphism, this is a key difference.
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Light travels extremely fast through the universe. However, the speed of light is limited to about
300,000 km/s. Because of that, it takes sunlight 8. 3 minutes to reach the Earth. How long does it take light from the Sun’s surface to reach Mars (223 million km distance to the
Sun), Jupiter (777 million km) and Pluto (5,906 million km), respectively?
It takes light about 12.4 minutes to reach Mars, 43.2 minutes to reach Jupiter, and 5.5 hours to reach Pluto, respectively, from the surface of the Sun.
To calculate the time it takes for light to travel from the Sun to a planet, we can use the formula:
time = distance/speed of light
For Mars:
time = 223,000,000 km / 300,000 km/s = 743 seconds or 12.4 minutes
For Jupiter:
time = 777,000,000 km / 300,000 km/s = 2,590 seconds or 43.2 minutes
For Pluto:
time = 5,906,000,000 km / 300,000 km/s = 19,687 seconds or 328.1 minutes or 5.5 hours
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What happens when meteoroids hit the earth's surface? what occurs if they don't? what is it called if they reach the earth's surface?
Answer: When a meteoroid enters the Earth's atmosphere, it will typically burn up and disintegrate due to the heat generated by friction with the air. The resulting visible streak of light is called a meteor or shooting star.
If the meteoroid is large enough, it may survive the fiery descent and reach the Earth's surface. In this case, it is called a meteorite. The impact of a meteorite with the Earth's surface can cause various effects, depending on the size and speed of the meteorite, and the type of terrain it impacts.
On the map, take a close look at the boundary along southern California and Mexico’s Baja California Peninsula. The arrows on the map show the direction and speed of the plates along this boundary in millimeters per year. Based on the speed and direction of the arrows, identify the type of plate boundary at this location. Which landforms or events are likely to occur there as a result? (Hint: It may be helpful to model the motion of the plates using your hands or pieces of paper.)
The Pacific Plate and the North American Plate move past one another along the San Andreas Fault in this area, which is now renowned as a transform border.
The ocean floor separating Baja California from the rest of mainland Mexico is what kind of plate boundary?The Gulf of California in Mexico is cut by a divergent plate boundary. Mexico's mainland and Baja California are being separated by the divergence. As a continent experiences continental rifting, magma rises beneath it, causing the continent to thin, fracture, and ultimately split.
Which kind of plate border runs through Southern California and the Baja California Peninsula in Mexico?Western California, which is a piece of the Pacific Plate, slides past the rest of North America along the San Andreas Fault, a transform plate border.
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. how can the characteristics of the tropical and temperate climate zones be seen in the temperature map?
The tropical and temperate climate zones can be seen on a temperature map due to their distinct temperature characteristics. The tropical climate zone typically has a warm and humid climate, while the temperate climate zone is characterized by more moderate temperatures.
On the temperature map, the tropical climate zone will usually be displayed in red and orange colors to indicate its high temperatures, while the temperate climate zone will be displayed in cooler colors such as blue and green.
In addition, the temperature map will typically show the highest temperatures at the equator and the lowest temperatures near the poles. This is because of the Earth's tilt, which causes more direct sunlight to hit the equator and less direct sunlight to hit the poles.
The temperature map will also show the change in temperature over the course of the year due to seasonal variations.
In conclusion, the tropical and temperate climate zones can be seen on a temperature map due to their distinct temperature characteristics. The tropical climate zone will typically be displayed in red and orange colors to indicate its high temperatures, while the temperate climate zone will be displayed in cooler colors such as blue and green.
Additionally, the temperature map will show the highest temperatures at the equator and the lowest temperatures near the poles, as well as the change in temperature over the course of the year due to seasonal variations.
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true or false: with good planning, pyroclastic flows can sometimes be directed away from inhabited areas.
With good planning, pyroclastic flows can sometimes be directed away from inhabited areas: false. Pyroclastic flows cannot be directed away from inhabited areas as they are a highly explosive and destructive phenomenon of volcanoes. Pyroclastic flows are highly dangerous and fast-moving, with high temperatures and velocities, making them one of the most significant threats to life and property in areas near volcanoes.
With good planning, however, we can reduce the risk of harm and loss of life in areas adjacent to volcanoes. Pyroclastic flows are extremely dangerous to human beings and their properties. As a result, evacuation is the most effective strategy for avoiding casualties in the path of pyroclastic flows.
The development of community-based preparedness plans can help to reduce the risk of harm to the residents of nearby cities or towns. These preparedness plans can help to decrease the chances of people being caught unaware by eruptions and pyroclastic flows. In addition to evacuation, it is critical to locate towns and cities away from areas prone to pyroclastic flows, as well as to prepare for the likelihood of pyroclastic flows in nearby regions.
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a cold air drainage wind is called a a cold air drainage wind is called a santa ana wind. bora. foehn. katabatic wind. sea breeze.
Answer: Katabatic wind
Explanation:
Katabatic drift/wind, also known as 'cold air drainage' is a drainage wind that carries high-density air from a higher elevation down a slope under the force of gravity. This occurs in much the same way as water would flow off the land.
where is Paris, France located? my 6-month-old-nephew wants to know.
Answer:
western europe
western edge of Europe boarded by the bay of biscay
if you lived in an area identified as class iii for land capability, what are some things you might need to take into consideration regarding the soil?
If you lived in an area identified as class III for land capability, the following are some of the things you might need to take into consideration regarding the soil: Crop selection and rotation, Soil improvement methods, Soil erosion, Soil testing.
Soil is considered a fundamental natural resource, which implies that it is critical to human beings' livelihoods. Soil that is classified as class III for land capability is considered unsuitable for farming or development since it has several limitations, such as shallow depth, low fertility, and low water storage capacity.Among the things to consider when dealing with such soil are:
1. Crop selection and rotation: Soil that is classified as class III for land capability is typically not suitable for growing most crops. This indicates that if you want to farm in this region, you must first select suitable crops and rotate them regularly. This is important because it aids in the soil's fertility restoration.
2. Soil improvement methods: You can utilize a variety of soil improvement techniques to improve the soil's fertility and water retention. These techniques can include the use of organic fertilizers, such as animal manure, or inorganic fertilizers that are rich in macronutrients such as nitrogen, phosphorus, and potassium. Other techniques include crop rotation, green manure, intercropping, cover cropping, and agroforestry.
3. Soil erosion: Soil that is classified as class III for land capability is generally vulnerable to soil erosion, which is caused by wind and water. To reduce soil erosion, you might consider utilizing several soil conservation techniques such as contour farming, terrace farming, and conservation tillage.
4. Soil testing: Soil testing is an essential component of soil management in any area, and class III soil is no exception. Soil testing is important for determining soil acidity or alkalinity, nutrient composition, and other factors that influence soil health. The findings of soil testing might then be utilized to inform soil management techniques, such as fertilizer application or soil pH adjustment.
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match each part of the atlantic ocean to when it formed. central atlantic ocean central atlantic ocean drop zone empty. south atlantic ocean south atlantic ocean drop zone empty. north atlantic ocean north atlantic ocean drop zone empty. 30 million years ago.
The Central Atlantic Ocean formed around 200 million years ago, the South Atlantic Ocean formed around 130 million years ago, and the North Atlantic Ocean formed around 30 million years ago.
How old is the Atlantic Ocean?The supercontinent known as Pangaea experienced a rift that appeared around 150 million years ago. Along the submerged Mid-Atlantic Ridge, new crust formed.
This alteration caused Pangaea to fragment, creating the Atlantic Ocean in the process. Before 1492, the Atlantic Ocean was divided into two separate hemispheres: North and South America and Europe, Asia, and Africa.
Notwithstanding Norse colonies in Newfoundland & North America, as well as legends of Prince Madoc's Welsh and Irish expeditions. Its border is defined by the 20° East meridian, which extends south through Cape Agulhas to Antarctica. Under the 1953 description, it reaches all the way to Antarctica, although on later maps, the Southern Ocean defines its southern boundary at the 60th parallel.
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the lowest surface air pressures ever recorded are associated with question 64 options: frontal systems (cold and warm fronts). hurricanes (typhoons). cold and dry climates. sea level.
The lowest surface air pressures ever recorded are associated with frontal systems (cold and warm fronts).
Frontal systems refer to the boundary between two air masses with different temperatures, densities, or moisture content.
As a result, these areas frequently experience thunderstorms and even tornadoes. Cold fronts, warm fronts, stationary fronts, and occluded fronts are the four types of frontal systems that meteorologists study.
Cold Fronts: A cold front is a sharp transition zone separating a warm air mass from a cooler air mass. The air behind the front is usually colder and drier than the air ahead of it, and it is often cloudy and rainy or snowy.
Warm Fronts: A warm front is a narrow transition zone separating a cold air mass from a warm air mass. Warm air replaces the cold air behind the front, and it's often cloudy or rainy.
Occluded Fronts: An occluded front is a boundary between two fronts, one cold and one warm. The air behind the occluded front is generally cooler than the air in front of it.
Stationary Fronts: A stationary front occurs when a warm front or cold front halts its progress. When two air masses meet but neither has enough power to displace the other, they create a stationary front.
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which of the following factors are necessary for soil formation? choose one or more: a. water b. organic material c. sediment or bedrock d. time
All options A, B, C, and D are all necessary for soil formation. Water, Organic material, Sediment or bedrock provides essential nutrients improves soil structure. And time is necessary for weathering, decomposition, and the creation of soil layers.
Soil formation is a complex process, and there are many factors that contribute to it. These factors can be divided into two main categories: physical and biological. Physical factors include things like climate, topography, and parent material. Biological factors include things like the presence of plants and animals, as well as the activities of microorganisms.In order for soil to form, there are several necessary factors that must be present. These factors include water, organic material, sediment or bedrock, and time.
Water is essential for soil formation as it helps move and bind nutrients. It also helps the soil retain moisture, which is important for the development of the soil. Organic material provides the essential organic matter that is needed for the soil to retain nutrients. This organic matter is necessary to help with nutrient retention, improve soil structure, and encourage microbial activity.
Sediment or bedrock provides the essential minerals and nutrients that the soil needs, as well as stability and a base structure. It is important for the soil to be able to retain these minerals and nutrients so that plants can access them.
Lastly, time is necessary for the weathering, decomposition, and the creation of soil layers. Over time, the soil’s structure will become more stable and complex, and its fertility will increase.
Overall, soil formation is a complex process that depends on many different factors. While some of these factors are more important than others, they all play a role in shaping the soil we see today. By understanding these factors, we can better appreciate the importance of soil and the vital role it plays in our lives.
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explain the links between the tohoku earthquake and other natural hazards. how do the effects of the earthquake and linked natural hazards compare?'
The Tohoku earthquake and other natural hazards are interlinked. The links between the Tohoku earthquake and other natural hazards are mentioned below:
Tsunami: Tsunamis are a type of natural disaster that can be triggered by an earthquake. As a result, the earthquake off the coast of Tohoku caused a tsunami that devastated many coastal areas.Landslides: Earthquakes may cause landslides in certain areas.Fires: Earthquakes may cause fires as a result of gas lines breaking and electrical systems becoming damaged. This is also true in the case of the Tohoku earthquake.Volcanoes: Earthquakes may cause volcanoes to erupt, which can exacerbate the effects of an earthquake in nearby regions.In terms of their effects, the Tohoku earthquake and other natural hazards are linked in that they can all cause significant damage to infrastructure and people.
The damage caused by an earthquake, however, may be more severe and long-lasting than that caused by other natural disasters, especially if it is followed by aftershocks.
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What is the HISTORY relations between the United States and Cuba? From 1898-Now
The history relations between the United States and Cuba from 1898 is that Under the Treaty of Paris, Cuba became a U.S. protectorate from 1898 to 1902; the U.S. gained a position of economic and political dominance over the island.
What was Treaty of Paris?There have been several treaties signed throughout history known as the Treaty of Paris, but the most famous one is the Treaty of Paris signed on September 3, 1783, between the United States and Great Britain, which ended the American Revolutionary War.
The Treaty of Paris of 1783 recognized the independence of the United States and established the boundaries of the new nation, which extended from the Atlantic Ocean to the Mississippi River and from Canada to the northern border of Florida. The treaty also granted fishing rights to Americans in waters off the coast of Canada and acknowledged the right of British creditors to recover debts owed to them by Americans.
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the law which states that sediments deposited in water form as horizontal layers is called the law of
Answer:
the law of superposition.
The law of superposition states that sedimentary rock layers are deposited in a time sequence, with the oldest layer at the bottom and the youngest at the top. This law is an important principle used in geology and archaeology to date rock formations and archaeological sites.
This law states that the sediments are initially deposited horizontally. As more sediment is deposited, it is added on top of the previously deposited material and compresses the older layers. This process creates stratified layers of rock and sediment, with the oldest layers at the bottom and the youngest at the top.
The law of superposition can be used to estimate the relative age of a sedimentary rock formation. For example, if the lowest layer of a sedimentary rock formation contains fossils of an extinct species, then the rock formation must be older than the extinction date of the species. By examining the layers of sedimentary rock, geologists can infer the age of the formation relative to other formations in the same area.
In addition to sedimentary rocks, the law of superposition can also be applied to other geological structures, such as faults, igneous rocks, and cross-bedding. The law of superposition can also be used to date archeological sites. By examining the artifacts found in a particular layer of soil, archaeologists can infer the relative age of the artifacts compared to those found in other layers.
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describe the two types of volcanic outcrops discussed in the video by sorting their characteristics.
Volcanic outcrops are classified into two types: intrusive and extrusive. Intrusive outcrops form when molten magma cools slowly beneath the surface of the earth, forming large, distinct crystals. Extrusive outcrops form when molten magma quickly cools upon the earth
Intrusive outcrops are typically made up of igneous rocks such as granite, gabbro, or diorite, and the cooling process allows for the formation of larger crystals.
These larger crystals allow for more intricate and interesting rock formations, and the larger size of the crystals makes them easily visible to the human eye. Extrusive outcrops are typically made up of igneous rocks such as basalt or andesite, and the quick cooling process results in smaller crystals.
Intrusive and extrusive outcrops differ in the way they form and the size of the crystals that make up the rocks. Intrusive outcrops form slowly, creating large, visible crystals, while extrusive outcrops form quickly, creating small, invisible crystals.
Both types of outcrops can be found in many geological settings, and each type has its own unique features that can be explored and studied.
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explain how the downslope, cool wind and upslope, warm winds develop in the early hours of the morning
Answer:
explain how the downslope, cool wind and upslope, warm winds develop in the early hours of the morning
Explanation:
when rain comes
what is the relationship between the northern and southern hemisphere with regard to insolation patterns? (1 point)
The Northern and Southern hemispheres experience opposite insolation patterns due to the Earth's axial tilt of approximately 23.5 degrees.
During the Northern Hemisphere's summer months, the North Pole is tilted towards the Sun, resulting in more direct and intense sunlight, and therefore higher temperatures.
Conversely, during the winter months, the North Pole is tilted away from the Sun, resulting in indirect and less intense sunlight, and therefore lower temperatures.
In the Southern Hemisphere, the opposite occurs, with more direct sunlight and higher temperatures during the winter months, and less intense sunlight and lower temperatures during the summer months.
These opposite insolation patterns have significant impacts on climate and weather patterns in both hemispheres, influencing everything from seasonal changes to precipitation patterns and vegetation growth.
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cyclogenesis is common: group of answer choices on the lee side of mountains none of the above on the peak of mountains on the windward side of mountains
Cyclogenesis, or the formation of cyclones, is common on the windward side of mountains.
This is because when moist air is forced to rise over a mountain range, it cools and condenses, leading to the formation of clouds and precipitation. The release of latent heat during the condensation process causes the air to become warmer and less dense, which can lead to the formation of a low-pressure system. As the low-pressure system intensifies, it can lead to the development of a cyclone or storm. In contrast, the lee side of a mountain range is typically characterized by drier and more stable air, which is less conducive to the formation of cyclones.
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which is not true of earth's atmosphere? it protects us from deadly uv radiation, yet lets light through.
The Earth's atmosphere does not protect us from all types of ultraviolet (UV) radiation. While the atmosphere does protect us from some of the most harmful forms of UV radiation, some forms are able to pass through the atmosphere. The ozone layer, which lies in the stratosphere, helps to protect us from most UV radiation.
However, even with the ozone layer present, some UV radiation still passes through and reaches the surface of the Earth. This UV radiation can cause skin damage, cataracts, and other health issues.
These molecules absorb and scatter light in different directions, which can reduce the amount of light that is able to reach the surface.
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what distinguishes the imagery in the chauvet cave from that of the great gallery in horseshoe canyon?
The imagery of the Chauvet Cave and the Great Gallery in Horseshoe Canyon differ in terms of style, medium, and purpose. The Chauvet Cave art is more representational and stylized, and is drawn or outlined, while the Great Gallery art is more abstract and expressionistic, and is painted with plant pigments and minerals.
The Chauvet Cave and the Great Gallery in Horseshoe Canyon both feature prehistoric artwork, however there are some distinct differences in the imagery. The Chauvet Cave features animal paintings such as mammoths, rhinoceroses, and bears, which are in shades of red, black, and white.
The Great Gallery, on the other hand, is made up of hand prints and abstract symbols and figures, and is in shades of red and yellow. The Chauvet Cave artwork appears to be more representational and stylized, while the Great Gallery artwork is more abstract and expressionistic.
The most striking difference between the two is the medium used for the artwork. The Chauvet Cave images are mostly drawn and outlined, while the Great Gallery art is created using paint made from plant pigments and minerals. This is likely due to the limited availability of natural light in the Chauvet Cave, which made it difficult to mix pigments and use other painting techniques.
Finally, the purpose of the artwork is also different between the two sites. While the Chauvet Cave is thought to have been used for ceremonial purposes, the Great Gallery is thought to have served as a way of marking a hunting territory or ritual pathway.
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easements vary greatly in the extent of that they impose on the encumbered land. a. duration b. legal standing c. disruption d. facility
Answer:
The correct answer is c. disruption.
Explanation:
The sentence is discussing how easements, which are legal rights to use someone else's property for a specific purpose, can differ in the degree to which they restrict or limit the use of the property by the owner. The options provided are different aspects in which easements can vary.
A) Duration
This refers to how long the easement is valid for. It could be a temporary easement or a permanent one.
B) Legal standing
This refers to the legal status of the easement. Some easements may be recognized by law and enforceable, while others may not have legal standing.
C) Disruption
This refers to the degree of interference or disruption caused to the owner's use of the property by the easement. Some easements may have little to no impact on the owner's use, while others may significantly disrupt their activities.
D) Facility
This refers to the purpose or type of use allowed by the easement. For example, an easement may allow for the construction of a road or the installation of utilities. The extent of the allowed facility can vary depending on the terms of the easement.
at earth's surface, iron melts at 1250 k, and the temperature at earth's core is approximately 5000 k. in what form would one expect to find the iron at earth's core
Iron at Earth's core is likely to be found in a molten state due to its high temperature.
The melting point of iron at Earth's surface is 1250 K (kelvins), and the temperature at Earth's core is estimated to be around 5000 K.
Iron is a chemical element with the symbol Fe and atomic number 26.
It is one of the most abundant elements on Earth and is a crucial component in many industrial and biological processes.
Iron is a metal with a silvery-grey color and is known for its strength and durability. It is used in the production of steel, which is widely used in construction, manufacturing, and transportation industries.
Iron is also essential to living organisms, as it is a key component in hemoglobin, the protein that carries oxygen in the blood.
Iron deficiency can lead to anemia, a condition characterized by fatigue, weakness, and shortness of breath.
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Which of the following best describes the tectonic cause of the 1906 San Francisco earthquake? - A rupture in the divergent plate boundary between the Pacific plate and the Nazca plate - A rupture along the transform plate boundary between the Pacific plate and the North American plate - The subduction of the Pacific plate beneath the North American plate
- The subduction of the Juan de Fuca plate beneath the North American plate
- It was an intraplate earthquake.
The best description of the tectonic cause of the 1906 San Francisco earthquake is a rupture along the transform plate boundary between the Pacific plate and the North American plate.
The 1906 San Francisco earthquake was caused by a rupture along the transform plate boundary between the Pacific plate and the North American plate. The San Andreas Fault runs along this boundary, and the earthquake resulted from the sudden release of energy that had built up over time due to the movement of these two plates past each other. The earthquake, which occurred on April 18, 1906, was one of the most destructive in American history, with an estimated magnitude of 7.8 on the Richter scale.
It caused extensive damage to San Francisco and the surrounding area, resulting in numerous deaths and injuries.
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q21: what was your estimate of earth's albedo during the last glacial maximum? why should it be larger than the earth's current albedo of 0.30?
Earth's albedo was estimated to be 0.32 during the Last Glacial Maximum. It ought to be greater than the Earth's current albedo of 0.30 due to the greater coverage of ice and snow.
The Earth's albedo was estimated to be 0.32 during the Last Glacial Maximum. Albedo is the property of reflecting light into space. Deserts, clouds, ice and snow, aerosols, and snow reflect sunlight. The albedo rises in proportion to the amount of reflected solar energy; the colder The ice cover expands as the temperature drops, raising the albedo as well.
Increased vegetation coverage improves the growing conditions for alpine grasslands on the TP, where Climate is the primary constraining factor, resulting in a lower surface albedo and greater energy absorption.
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which of the following is a necessary component in the formation of sedimentary rocks? group of answer choices melting of a precursor rock weathering of a precursor rock high viscosity differential stress
The necessary component in the formation of sedimentary rocks is weathering of a precursor rock. Therefore the correct option is option B.
Sedimentary rocks are one of the three main rock categories that make up the Earth's crust. Sedimentary rocks are rocks that are made up of sediment, which is made up of tiny particles of sand, shells, and other materials that settle on the bottom of bodies of water.
The breakdown of rock by physical, chemical, or biological processes is known as weathering. Rocks and soils are damaged by weathering, which makes them smoother, smaller, and easier to transport.
Sedimentary rocks can be created by the weathering of a precursor rock. The resulting sediment is transported to a new location and then cemented and compacted into rock.
Thus, the necessary component in the formation of sedimentary rocks is weathering of a precursor rock. So, the correct option is B. Weathering of a precursor rock.
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The following question may be like this:
which of the following is a necessary component in the formation of sedimentary rocks? group of answer choices
melting of a precursor rock weathering of a precursor rock high viscosity differential stresswhat is an aquifer, igneous and metamorphic rocks are not good aquifers as they contain little natural porosity or permeability.
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted. Igneous and metamorphic rocks generally contain little natural porosity or permeability and therefore cannot be used as aquifers. Igneous rocks, for instance, form when molten magma cools and solidifies.
The cooling process does not leave much space for porosity and permeability. The recrystallization of the rock grains during metamorphism also does not leave much space for porosity and permeability.
Aquifers can be found in sedimentary rocks like sandstone, limestone and shale because the grains of these rocks are arranged in a way that allows for more porosity and permeability.
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you're excavating and discover a large fragment of a well-preserved ancient woven basket made of organic material. what chronometric dating method would you use to discover its age?
The chronometric dating method used to discover the age of an ancient woven basket made of organic material discovered while excavating is "radiocarbon dating".
Chronometric dating or numerical dating is a method of dating that uses radioactive decay to calculate an absolute age. The time taken for the radioactive element to decay to half of its original amount is the half-life of that element.
What is Radiocarbon dating?
Radiocarbon dating is a method of dating that uses the decay of carbon-14 to calculate an absolute age. Radiocarbon dating is used to estimate the age of materials that were once alive but have since decayed, such as wood, shells, and bone.
Carbon-14 is a radioactive isotope of carbon that is produced naturally in the atmosphere. When a living organism dies, it stops taking in carbon-14. The carbon-14 that was already in the organism starts to decay, turning into nitrogen-14.
The rate at which carbon-14 decays is constant, so by measuring the amount of carbon-14 left in a sample, you can calculate how long ago the organism died.
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what common mineral is found in igneous rocks and is also abundant in most sandstones? biotite mica pyroxene plagioclase feldspar quartz
Answer:
Quartz
Explanation:
how thick are all the john day rock deposits taken together? how many species do they contain, in total?
The john day rock deposits taken together will be 15,000 feet thick, with 180 species in total.
The John Day rock deposits are composed of multiple layers of sedimentary rock that are estimated to be around 15,000 feet thick in total. These rock formations contain a diverse array of over 180 species of plants, 100 species of fish, and several mammals, reptiles, and amphibians.
This region is a paleontological wonder, with fossils of creatures such as sabre-toothed cats, ground sloths, and camels having been discovered here. The John Day fossil beds are an important scientific resource, providing invaluable insights into the evolution of life on Earth.
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