wildfires may spread in three ways: slowly along the ground, as a wall of fire along a flaming combustion front, or as a(n

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Answer 1

Wildfires may spread in three ways slowly along the ground, as a wall of fire along a flaming combustion front, or as a crown fire.

A wildfire is an uncontrollable fire that burns in the wilderness. It is sometimes referred to as a forest fire, bushfire, or grass fire because it typically happens in wooded areas, grasslands, and shrublands. Three ways in which wildfires can spread are mentioned below:Slowly along the ground:

The fire creeps slowly along the ground, burning up dead leaves, branches, and twigs. It is the slowest mode of propagation, with an average speed of 0.5 mph.Wall of fire: When a combustible substance is ignited, the fire spreads in the form of a wall of flames. When a fuel source is present, the fire spreads faster and with greater intensity.

Crown fire: It occurs when the flames reach the treetops. It may be caused by windborne embers, spotting, or surface fire that progresses upward. Crown fires can spread rapidly, spreading embers over a considerable distance.

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Related Questions

briefly explain why a permanent temperature inversion (temperature increases with height) occurs throughout stratosphere

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A permanent temperature inversion, in which temperature increases with height, occurs throughout the stratosphere because of the presence of ozone in the stratosphere.

The absorption of ultraviolet radiation by ozone causes the stratosphere to be heated. Due to the high temperatures of the stratosphere, the temperature increases with increasing altitude.

Additionally, the stratosphere is relatively dry, with little to no water vapor to absorb or emit heat, contributing to the permanent temperature inversion.

A permanent temperature inversion layer in the stratosphere helps to stabilize the atmosphere and prevent vertical mixing between the stratosphere and the troposphere below. This plays an important role in regulating our climate, as it helps to maintain the atmospheric conditions necessary for life on Earth. By preventing mixing, the temperature inversion layer helps to keep the troposphere cooler and drier than the stratosphere, which can have significant impacts on weather patterns and the overall climate system.

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What is Fiji known for? a. grassland and hurricanes b. landfills c. tropical islands​

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c. tropical islands is the answer

which of the following is not a low-latitude climate region? mansoon wet equatorial dry tropical tropical savanna humid subtropical

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Answer: A low latitude climate is a tropical climate, exemplified by areas in or near the equator.

Assuming the sand dune (illustrated below) was deposited by wind currents 200 million years ago, which way was the wind blowing?Image: similar to the pair&share photo of the Jurassic Navajo Sandstone in Utah from the "Play in the Mud (and Sand)" lectureA) wind was blowing from the left to rightB) wind was blowing from right to leftC) wind was blowing both waysD) can't determine from the information given

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The sand dune (illustrated below) was deposited by wind currents 200 million years ago, which way was the wind blowing wind was blowing from right to left. The correct answer is B) the wind was blowing from right to left.

To determine the wind direction, we need to analyze the sand dune's structure. Sand dunes have two distinct sides: the windward side and the leeward side. The windward side is the side facing the wind, and it has a gentle slope. The leeward side is the side sheltered from the wind, and it has a steeper slope.

In this case, we can see that the left side of the dune has a steeper slope, while the right side has a more gentle slope. This indicates that the wind was blowing from the right, carrying sand grains up the gentle slope on the right side of the dune. Once the wind reached the top of the dune, it lost its carrying capacity, causing the sand grains to fall and accumulate on the steeper left side of the dune, forming the leeward side.

So, considering the structure of the sand dune and the slopes, we can conclude that the wind was blowing from right to left 200 million years ago when the sand dune was deposited. The correct answer is B) the wind was blowing from right to left.

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what does the existence of machu picchu suggest about the power of the inca king?

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The existence of Machu Picchu suggests that the Inca king or emperor, Pachacuti Inca Yupanqui, had significant power and resources at his disposal. Machu Picchu is an ancient Inca citadel located in the Andes Mountains of Peru

It is thought to have been constructed in the middle of the 15th century as a royal estate for Pachacuti Inca Yupanqui. It is reasonable to assume that the Inca king had the strength and authority to command the necessary materials and labor force given the amount of labor, resources, and organization required to build such a monumental and elaborate structure in a remote and inaccessible location. Additionally, Machu Picchu's strategic location, with a view of the Urubamba River Valley, may have represented Inca power and control over the neighboring lands symbolically.

However, it's important to note that there are still many unanswered questions about the function and significance of Machu Picchu, and historians continue to disagree about its exact place in Inca politics and society.

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A stream or river is a body of water flowing in a __________.

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A stream or river is a body of water flowing in a channel.

A stream is a small river that can be crossed by wading or hopping from one bank to the other. If the stream is fed by underground water sources or has a large volume of water, it might be deep enough to require a bridge. The water in a stream or river usually flows downhill due to gravity, but it may also flow from high to low pressure or from an area of high elevation to one of lower elevation.

The movement of a river is aided by the slope of the ground, the size and position of rocks and other debris in its bed, and the amount and speed of water in the river. The soil composition and the landscape through which it flows will also influence the river's flow. The banks of a river or stream are often eroded by the water's movement, and the water may transport soil, rocks, and other debris downstream. This process aids in the formation of canyons, gorges, and other geologic formations.

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which is true concerning the blue and magenta colors used to depict airspace on sectional aeronautical charts? group of answer choices faded lines represent airspace which extends to the surface.

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The given statement "the blue and magenta colors used to depict airspace on sectional aeronautical charts have faded lines which represent airspace which extends to the surface" is true because a sectional chart is a map utilized in air navigation that portrays the details of an area's airspace.

This map has contour lines and visual terrain characteristics, including obstructions, lakes, and rivers, which provide pilots with the information they need to navigate safely in VFR conditions.

The sectional chart's primary objective is to depict land features that might help a pilot navigate the area. The chart contains many different symbols and markings to indicate obstacles, airports, and other important details that a pilot should be aware of while flying. The colors blue and magenta are used to denote airspace on sectional charts.

Meanwhile, magenta color denotes airspace that stretches from the surface up to 10,000 feet, above sea level. It indicates Class E airspace in which Class G airspace above 14,500 feet MSL is also depicted in magenta. The faded lines within the blue and magenta airspace denote airspace that extends to the surface, as mentioned earlier.

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2. What is one of the characteristics of Mexico's heartland region?
the country's longest coastline
the country's best farmland
the country's largest oil deposits
the country's driest weather
(ANSWER QUICK PLEASE)

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the country's best farmland

in china, mining for rare earth metals has led to the pollution of air and streams and left land stripped of vegetation. this is due to .

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Answer:

the lack of strict environmental regulations

i hope these help you

item2 1 points item 2 all of the ecosystems on the planet together are called the multiple choice lithosphere. biosphere. hydrosphere. stratosphere. atmosphere.

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The biosphere is the term used to describe all of the ecosystems on the planet.

Biosphere includes the lithosphere (the solid crust of the Earth), the hydrosphere (the liquid water on the planet), the atmosphere (the air surrounding the Earth), and the stratosphere (the layer of air just above the atmosphere). All of these components work together to create the biosphere, and together they form a complex network of interactions. For example, water evaporates from the hydrosphere and condenses in the atmosphere, which then falls back to the Earth's surface as rain or snow. In this way, the biosphere is constantly exchanging materials and energy between its different components.

The biosphere is the Earth's living systems, including all living things on the planet, such as plants, animals, and microorganisms. The biosphere is closely related to the other three systems, as living organisms rely on water, air, and nutrients from the Earth's crust. The biosphere is the most complex and diverse of the Earth's systems, with a vast range of organisms that interact with each other in intricate ways. All the ecosystems on the planet together are called the biosphere.

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Final answer:

The term for all the ecosystems on the planet together is the biosphere, which encompasses all living organisms and their physical environments, including land, water, and air.

Explanation:

All of the ecosystems on the planet together are referred to as the biosphere. This term includes all living organisms and their physical environments, spanning over land (lithosphere), water (hydrosphere), and air (atmosphere). The other options listed: lithosphere, hydrosphere, stratosphere, and atmosphere are all components of the biosphere, but they individually do not represent all ecosystems on Earth.

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which of the following are geologic settings where travertine can form? choose one or more: a. in glacial lakes b. in caves c. in fast-moving rivers d. near hot springs e. in swamps

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Travertine can form in a variety of geologic settings, including in caves,  near hot springs, and  in fast-moving rivers. Therefore the correct option is option A, B and C.

In caves, travertine forms as a result of carbon dioxide in the air dissolving in water. This results in an increase in the acidity of the water, which in turn dissolves the rock the cave is made of and deposits the resulting sediment in the form of travertine.
Near hot springs, the water is saturated with dissolved minerals such as calcium carbonate, which can also be deposited in the form of travertine.
In fast-moving rivers, the increased turbulence can cause the suspended sediment in the water to become trapped and deposited in the form of travertine.
Travertine can also form in glacial lakes, but not in swamps.

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Which of the layers in the atmosphere do temperatures vary the most?

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Answer:

The Troposphere

Explanation:

It has most of our weather like rain, snow, and clouds.  On this part of the atmosphere, the temp gets cold as the amount of space above the earth increases.  

as planet mercury formed, temperatures in this region were around 1400k. thus mercury formed out of...

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As the planet Mercury formed, temperatures in this region were around 1400K.

Thus, Mercury formed out of material that had a high melting point. The most abundant elements were metals such as iron (Fe), nickel (Ni), and silicon (Si).

This is because the melting point of these elements is high enough to withstand the high temperature in the region. These elements, particularly iron, dominated the formation of Mercury.

In fact, the planet's density is the second-highest in the solar system, after Earth, which suggests a substantial metallic core.

According to the Giant impact hypothesis, Mercury was formed after a Mars-sized body collided with the early Earth.

The debris from the impact was scattered into space and coalesced into a hot planetesimal which eventually became Mercury.

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at night, the air above the mountain slopes and drains into the warm valley below, creating a .

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At night, a process called radiation cooling causes the air on the mountain slopes to cool more quickly than in the valley below. This creates a temperature inversion, where the air temperature at the top of the mountain is cooler than at the base.  

The temperature inversion also has other effects, such as creating a stable layer of air that traps pollutants near the ground and limits visibility. Additionally, the process helps to distribute moisture more evenly throughout the environment.

This is a vital part of many mountain ecosystems, and an important factor to consider when studying climate patterns and air quality in mountainous areas.

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describes the tendency for different types of rock to weather at different rates.

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The tendency for different types of rock to weather at different rates is known as differential weathering. This phenomenon occurs due to the varying physical and chemical properties of different rocks.

For example, rocks with a greater porosity and permeability are more likely to absorb water, leading to faster weathering.

In contrast, rocks with low porosity and permeability will not absorb water easily and therefore weather more slowly. Other factors that can influence the rate of weathering include the type of minerals that the rock is composed of and the climate in which it is located. Differential weathering affects the landscape, often leading to the formation of distinctive features such as mesas and canyons.

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2. given a mean earth radius of 20,906,000 ft, and an observation latitude of n 47 degrees, what is the arc distance of one second of longitude and one second of latitude?

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At 47 degrees latitude, one second of longitude is equivalent to about 49.03 feet of arc distance, whereas one second of latitude is equivalent to about 100.76 feet of arc distance.

The following formula can be used to determine the arc distance of one second of longitude at a specific latitude:

Mean Earth Radius x Cosine of Latitude x Arc Distance (angular distance)

where 1/3600 degrees is the angular distance (since there are 3600 seconds in one degree). When we enter the values from the issue, we obtain:

One second's worth of longitude is represented by the formula (20,906,000 ft) x (cosine 47) x (1/3600) = 49.03 ft.

Similarly, the formula: can be used to get the arc distance of one second of latitude.

(Mean Earth Radius) x = arc distance (angular distance)

When we enter the values from the issue, we obtain:

One second of latitude is equal to 20 906,000 feet multiplied by 1/36 equals 100.76 feet.

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What are the 5 stages of solar system formation?

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The 5 stages of solar system formation are Solar Nebula, Protostar and Protoplanetary Disk, Planetesimals, Protoplanets and  Solar System.

The 5 stages of solar system formation are:

1. Solar Nebula: A cloud of dust and gas, called the solar nebula, begins to collapse due to gravitational forces. As it collapses, the material starts to spin and flatten into a disk shape.

2. Protostar and Protoplanetary Disk: The material in the center of the disk becomes denser, forming a protostar. Meanwhile, the remaining material in the disk starts to clump together, creating a protoplanetary disk around the protostar.

3. Planetesimals: Within the protoplanetary disk, solid particles collide and stick together, forming larger bodies called planetesimals. These planetesimals continue to grow as they collect more material from the disk.

4. Protoplanets: As planetesimals grow and interact, some merge through collisions, eventually forming larger bodies known as protoplanets. Protoplanets continue to evolve and differentiate, developing into the planets we observe in our solar system today.

5. Solar System: Over time, the protostar at the center of the system becomes a fully-fledged star (our Sun), while the remaining protoplanetary disk material is cleared out, leaving the planets, moons, asteroids, and other bodies orbiting the star. This marks the formation of the solar system.

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what benefits do green roofs provide? (explain the following topics)
Water
Energy

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The benefits provided by green roofs include:

Water management Energy efficiency

What are green roofs and how do they benefit us ?

Green roofs can help to manage stormwater runoff by absorbing and retaining rainwater in the vegetation and soil layers. This reduces the amount of water that enters stormwater systems and can help to prevent flooding and erosion.

Green roofs can help to reduce the energy consumption of buildings by providing insulation and reducing the amount of heat that is absorbed by the roof. The vegetation and soil layers act as an insulating layer, helping to keep buildings cooler in the summer and warmer in the winter.

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which term describes a soil that remails in place after having formed by weathering of the underlying bedrock? residual relict transformational transported

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The term that describes soil that remains in place after having formed by weathering of the underlying bedrock is residual soil.

What is residual soil?

Residual soil, also known as residuum, is soil that forms from the weathering of bedrock that has remained in place. This soil is formed by in situ weathering and usually remains where it is formed. The weathering processes cause the bedrock to disintegrate into small particles, resulting in the formation of residual soil.

Residual soils are usually found on slopes and hilltops, where weathering is highest, and are often composed of coarse particles due to the intense weathering that occurs. They are generally thick and can be of varying depths depending on the bedrock they have formed from. The soil is typically rocky and nutrient-poor, which limits plant growth. Residual soils are classified as 4th-order soils according to the Soil Taxonomy. The Soil Taxonomy ranks soils into 12 orders based on their characteristics.

Residual soil is soil that forms from the weathering of bedrock that has remained in place.

Residual soils are usually found on slopes and hilltops, where weathering is highest. They are typically rocky and nutrient-poor. Residual soils are classified as 4th-order soils according to the Soil Taxonomy.

The word used to describe soil that stays in its original place after being formed by the weathering of the underlying bedrock is "residual soil".

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A storage site for high-level radioactive waste would have all of the following features except: isolated from major population centers. geological stability. no contact with groundwater. near volcanic activity where waste can be destroyed by high temperatures. no contact with flowing water or air movement.

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A storage site for high-level radioactive waste would have all of the following features except being near volcanic activity where waste can be destroyed by high temperatures. The correct option is option D (near volcanic activity where waste can be destroyed by high temperatures).

A storage site for high-level radioactive waste would have all of the following features except being near volcanic activity where waste can be destroyed by high temperatures. A storage site for high-level radioactive waste would have to have the following features:

• Isolated from major population centers.

• Geological stability.

• No contact with groundwater.

• No contact with flowing water or air movement.

High-level radioactive waste is highly hazardous, and it could cause catastrophic results if it were to be released into the environment. As a result, storage facilities must be built in such a way that they can securely contain high-level radioactive waste. They must be situated away from significant population centers to prevent exposure to large groups of people.

They must also be geologically stable, which means they must be constructed on a site that has not experienced tectonic activity for a long period of time. There should be no contact with groundwater to prevent the release of contaminants into the environment. Finally, there should be no contact with flowing water or air movement. The correct option is option D (near volcanic activity where waste can be destroyed by high temperatures).

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describe the major differences in the abiotic factors observed in the high tide zone versus the lower inter tidal zone.

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The abiotic factors observed in the high tide zone versus the lower intertidal zone are different. The major differences in the abiotic factors observed in the high tide zone versus the lower intertidal zone are as follows:

Abiotic factors in the high tide zone: In the high tide zone, the abiotic factors include temperature fluctuations, wave exposure, and variations in salinity. This region is typically less exposed to sunlight and air because the tide comes in and out of this zone quickly.

The high tide zone can experience strong wave action, as well as wind and water fluctuations. These factors all contribute to making it a challenging environment for plants and animals to survive.

Abiotic factors in the lower intertidal zone: In the lower intertidal zone, the abiotic factors include water pressure, light exposure, temperature fluctuations, and salinity. This region is typically more exposed to sunlight and air because the tide takes longer to come in and out.

The lower intertidal zone also experiences less wave action than the high tide zone. These factors make the lower intertidal zone an easier environment for plants and animals to survive.

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as transgression occurs at a given location, . choose one or more: a. sea level rises. b. the coastline migrates inland. c. sea level falls. d. the coastline migrates seaward. e. a mud layer accumulates over a sand layer.

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Transgression is a term used to describe the phenomenon when the sea level rises and the coastline migrates inland. Therefore the correct option is option B.

This is a natural process that happens due to several reasons such as global warming, melting of glaciers and ice caps, and tectonic plate movements.

Transgression is the geological phenomenon that occurs when sea levels rise or land subsides, resulting in flooding and a gradual migration of coastal landforms inland.

Transgression occurs when relative sea level rises due to any one of several reasons such as melting of glaciers and ice caps, global warming, or tectonic plate movements.

Thus, transgression is a vital process that shapes our coastlines and plays a significant role in the geological history of the earth. Therefore the correct option is option B.

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What are the three ways In which corruption will negatively affect the financial growth of South Africa​

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Answer:

unemployment, reduction in tax revenue, decline in business operation and ultimately, collapse of the economy

further west from this deep u.s. trough, eastern alaska, as well as yukon and british columbia, canada, were being impacted by a . a. ridge b. trough g

Answers

Further west from the deep U.S. trough, Eastern Alaska, as well as Yukon and British Columbia, Canada, were being impacted by a ridge.

A ridge of high pressure is impacting Eastern Alaska, Yukon and British Columbia in Canada, further west from the deep U.S. trough. A ridge of high pressure is an area of high atmospheric pressure, which is associated with fair weather, light winds and generally pleasant conditions. This ridge is formed when two air masses move away from each other, causing the air pressure in the area to increase. A ridge is typically indicated on a weather map by a line of red L's. The L's are placed on the map in the direction of the wind flow around the ridge, with the point of the L representing the area of highest atmospheric pressure.

The increased atmospheric pressure caused by the ridge produces lighter winds and warmer temperatures. The warmer temperatures and decreased wind speeds generally lead to more stable weather conditions and less precipitation. The ridge can also bring dry and sunny conditions, as well as a decrease in storm activity. These effects can be felt further downwind of the ridge, making it a welcomed feature in many areas.


In contrast, a trough is typically associated with low-pressure areas that produce wet, stormy weather conditions, as well as cool temperatures. This is because the low-pressure system promotes the formation of clouds and precipitation, which can reduce the amount of solar radiation that reaches the Earth's surface.

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does the southern hemisphere experience hotter summers and colder winters? i ask this because the earth's perihelion is in winter for the northern hemisphere (around january 3rd)

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Yes, the Southern Hemisphere does experience hotter summers and colder winters. This is because of the way the Earth's orbit around the Sun is tilted relative to its axis of rotation. The Earth's perihelion, or point of closest approach to the Sun, is in January for the Northern Hemisphere, while it is in July for the Southern Hemisphere.

This means that the Northern Hemisphere gets less direct sunlight during winter, causing colder temperatures, while the Southern Hemisphere gets more direct sunlight during summer, leading to hotter temperatures.

The Earth's axial tilt, or obliquity, is responsible for the Earth's seasons. During winter, the Northern Hemisphere is tilted away from the Sun, and during summer it is tilted towards the Sun. Conversely, the Southern Hemisphere is tilted away from the Sun during summer, and towards the Sun during winter. This difference in angle of sunlight causes the Northern Hemisphere to experience colder winters and hotter summers, while the Southern Hemisphere experiences hotter summers and colder winters.

Additionally, the Southern Hemisphere is more exposed to the ozone layer, which absorbs some of the Sun's ultraviolet radiation, leading to slightly higher temperatures. This explains why the temperatures in the Southern Hemisphere are higher than the Northern Hemisphere during the same season.

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when going from a 5 to a 6 on the richter scale, what is the increase in amplitude of seismic waves?
a. 1 times
b. 2 times
c. 10 times
d. 32 times

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When going from a 5 to a 6 on the Richter scale, the increase in amplitude of seismic waves is 10 times.

This means that a magnitude 6 earthquake produces seismic waves with ten times more amplitude than a magnitude 5 earthquake. The Richter scale is a logarithmic scale, which means that each whole number increase represents a tenfold increase in the amplitude of the seismic waves. For example, a magnitude 7 earthquake produces waves with 100 times more amplitude than a magnitude 5 earthquake, while a magnitude 8 earthquake produces waves with 1,000 times more amplitude than a magnitude 5 earthquake, and so on.

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where is light penetration in a river or stream likely to be lowest? a. the source b. the mouth c. the middle portion d. none of the above please select the best answer from the choices provided a b c d

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Light penetration in a river or stream is likely to be lowest at the middle portion. The correct option is C.

This is because the middle portion of a river or stream is typically the deepest and has the most sediment, which can block out or reduce the amount of light that penetrates the water.

Additionally, the middle portion is often where the greatest amount of currents and turbulence occur, which can further reduce the amount of light that reaches the bottom of the river or stream.

As light penetration decreases, photosynthesis rates are lowered and the amount of oxygen available to the aquatic life in the river or stream is also reduced. The correct option is C.

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mapping does not: group of answer choices provide a baseline against which to measure the impact of improvement efforts. define the boundaries of a process. provide a detailed view of all elements external to the process. create a common understanding of the content of a process.

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Mapping does not provide a detailed view of all elements external to the process. Therefore the correct option is option C.

Mapping is a representation of something on paper that is simplified or reduced to its essential characteristics. Mapping is the process of graphically portraying the entire business process to give a visual perspective of how it functions in practice.

The advantages of Mapping are as follows: Maps can be used to simplify complicated concepts or interactions. Maps can assist in the detection of mistakes or improvement areas. Maps provide a clear picture of who is involved, what they do, and how their work connects to the rest of the organization.

Maps help to create a shared understanding and language. A baseline is a reference point or a standard against which something can be assessed or measured. Mapping does not provide a detailed view of all elements external to the process. Therefore the correct option is option C.

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The following question may be like this:

mapping does not: group of answer choices

provide a baseline against which to measure the impact of improvement efforts. define the boundaries of a process. provide a detailed view of all elements external to the process. create a common understanding of the content of a process.

which element is found in greater amounts in low viscosity magma, than in high viscosity magma? question 12 options: a) si b) fe

Answers

Si (Silica) is found in greater amounts in low viscosity magma, than in high viscosity magma. Option A is correct answer.

High silica content magmas will consequently show higher levels of polymerization and have higher viscosities than magmas with low silica concentration. A substance's viscosity is a measurement of its consistency. A substance's viscosity is defined as its capacity to resist flow. Viscosity is, in some ways, the inverse of fluidity. Because cold molasses is less fluid than water, it has a greater viscosity.

The temperature, composition, and gas concentration of a magma all influence its viscosity. The relationship between temperature and viscosity is self-evident. The greater the temperature, like with most liquids, the more fluid the material becomes, reducing its viscosity.

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based on the distribution of magnetic anomalies, where is the oldest oceanic crust found? the youngest? what are their ages?

Answers

The oldest oceanic crust is found in the central Pacific Ocean and the youngest oceanic crust is found along the Mid-Atlantic Ridge. The oldest oceanic crust is about 180 million years old and the youngest oceanic crust is about 3 million years old.

The distribution of magnetic anomalies helps geologists identify the age of the oceanic crust. Magnetic anomalies are created when new oceanic crust is formed due to volcanic activity and tectonic plate movement. The magnetism of the oceanic crust is usually aligned with the Earth's magnetic field when it is first formed. As the Earth's magnetic field reverses, the magnetism of the oceanic crust is "frozen in time" and helps scientists measure the age of the crust.

The oldest oceanic crust is found in the central Pacific Ocean because it has been around the longest and hasn't moved much due to tectonic plate movement. The youngest oceanic crust is found along the Mid-Atlantic Ridge because this is where new oceanic crust is constantly being formed due to tectonic plate movement and volcanic activity.

By studying the distribution of magnetic anomalies, scientists can accurately measure the age of the oceanic crust and identify where the oldest and youngest crust can be found.

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originally from jamaica in the west indies, which harlem renaissance writer lived mainly in the new york neighborhood of greenwich village? the nurse is conducting an assessment on a newborn and witnesses a startled response with the extension of the arms and legs. the nurse should document this as which response? dean and emma are nonidentical twins separated at birth and brought up in different households. their iq scores are most likely a load of 12 kg stretches a spring to a total length of 15 cm, and a load of 30 kg stretches it to a length of 18 cm. find the natural (unstretched) length of the spring. what do we call the system of human communication based on a set of symbols and signs with learned and shared meanings? a 170-hz sound travels through pure helium. the wavelength of the sound is measured to be 5.92 m. what is the speed of sound in helium? alexis puts dimes and quarters aside for the parking meter. she has a total of 20 coins and they are worth $3.80. how many quarters does alexis have? Which of the following equation will produce the graph shown below three students were applying to the same graduate school. they came from schools with different grading systems. which student had the best gpa when compared to his or her school? Find the volume of a right circular cone that has a height of 20 ft and a base with a radius of 18 ft. Round your answer to the nearest tenth of a cubic foot a mixture of three gases has a total pressure of 1,380 mmhg at 298 k. the mixture is analyzed and is found to contain 1.27 mol co2, 3.04 mol co, and 1.50 mol ar. what is the partial pressure of ar? multiple choice 0.258 atm 301 mmhg 356 mmhg 5,345 mmhg 8,020 mmhg What is the objective of the study?A to disprove people's beliefs about lyingB to find out why people lieC to prove a widely-held hypothesisD) to prove whether lying leads to criminality suppose you have an atwood machine with two different masses m and m. what are the external forces acting on this system? Andy is a freelance reporter and is reviewing an article he wrote for a magazine.He wants to quickly crosscheck some facts he stated in his article.Which of the following can help Andy?A) RhythmOneB) Wolfram AlphaC) Ask a LibrarianD) TinEye true or false: the northern hemisphere of mars experiences long cold winters. question 1 options: true false hurricane formation is most likely where there is little wind shear, some coriolis force to provide spin, and what else? What are the integer solutions to the inequality below?1x3 A long solenoid has 100 turns/cm and carries current i. an electron moves within the solenoid in a circle of radius 2.30 cm perpendicular to the solenoid axis. the speed of the electron is 0.0460c (c speed of light). find the current i in the solenoid. The sound level produced by one singer is 71.8 dB. What would be the sound level produced by a chorus of 45 such singers (all singing at the same intensity at approximately the same distance as the original singer)? Answer in units of dB. Scenario #2: It's the first day of school and you and your best friend didn't get to see each other allsummer. Everyone always remarks on how you look the same because you are the same height,weight, and have the same hair color. When you finally get to hang out again, your friend is 4 inchestaller than you now. You start wearing platform shoes so you can be the same height again.Body systems interacting in this scenario?How are they interacting with each other?