Answer:
Option (B)
Explanation:
A hotspot is usually defined as the region that experiences extensive volcanic activities on the earth's surface. It is caused due to the rising up of magma from the deep interior of the earth, forming large columns of magma, and where the force exerted by the convection currents are high. For example, Hawaii are formed from a hotspot in the Pacific plate.
There is a hotspot located below the Pacific plate, and as the Pacific plate is moving towards the northwestern direction, it experiences extensive volcanism and gave rise to the formation of the Hawaii island. This is what the plate tectonic theory explains regarding the hotspots.
Thus, the correct answer is option (B).
The lithosphere, the Earth's solid outer crust, is divided into plates that move across the asthenosphere, the molten upper layer of the mantle, according to plate tectonics theory.
Option (B) is the one that explains the Tectonic theory of the given information.
The correct response:" B. a hot spot currently sitting under Hawaii and the Pacific Plate moving across it in a northwesterly direction. "
The reasons for the response:The plate tectonic theory explains the hotspots in this manner. As a result, the chosen option is the proper response (B).
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Chicago experienced unemployment problems, poor schools, and substandard housing during the early part of the twentieth century; hence, criminal behavior could be expected in these zones according to Select one: a. Sutherland and Hirschi. b. Merton and Miller. c. Lombroso and Dugdale. d. Shaw and McKay.
Answer:
chicago
Explanation:
is part of the twentieth move of the centery
In recent years, significant advances have been made in hurricane tracking technology, to the extent that they can be tracked from the moment they form as tropical waves off the coast of West Africa to their landfall in the United States.a. True.b. False.
Answer:
a. True
Explanation:
As scientists has developed a significant advanced technology that enables us to track down the path of motion of the cyclones and hurricanes and help us to identify their formation types and thus enables us to plan out emergency operations in advance and thus can tell when a cyclonic is going to make a land and where.Earth's giant water supply stores a huge amount of heat from the sun during warm periods and gives off heat that warms the air during cold periods.
This enables temperatures on the planet to stay within the limits that permit life.
True or False?
Answer:
True
Explanation:
The earth's ocean generates warm and cold current with respect to the location and the time of the year.
Warm ocean currents originates from the equator and flows towards the pole to balance the surrounding temperature whole cold ocean currents rises from the pole towards the equator to balance the hot equator temperature.
The Earth's giant water supply acts as a heat sink, regulating the planet's temperature and preventing extreme fluctuations.
Explanation:The statement is true. The Earth's giant water supply, which includes the oceans, acts as a heat sink, absorbing and storing a large amount of heat from the sun during warm periods. This helps regulate the planet's temperature and prevents extreme fluctuations. In colder periods, the water releases the stored heat, which warms the air and helps maintain livable temperatures.
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A sound pulse released from an echo sounder returns to the ship in 6.8 seconds. Assuming the speed of sound in ocean water is 4800 ft/sec, how many feet deep is the ocean at this location?
a.16,320
b.There is not enough information to tell
c.353
d.706
e.32,640
Answer:A)16,320ft
Explanation:
Echo is defined as the reflection of sound waves when it hits a hard surface ,in this case the bottom of the ocean.it represents the second sound you hear when you shout or utter a sound in a new empty house or on a silent night.
It is used in determining the depth of the sea or ocean using the formula ,V=2x/t
Where V=velocity of sound=4800ft/s
and t=time taken from ship to bottom of the sea and back=6.8s.
X=V×2x=4800×6.8=16,320ft is the ocean depth
The search for black holes has so far turned up some fairly convincing stellar-sized candidates in binary star systems. What observations could you make to distinguish whether the unseen object in one of these systems is a black hole or a neutron star?
Answer:
Th similarities between the black hole and the neutron star is that they are formed from dead (dying) starts. But they come from different parent stars, if the parent star is 1.4 times the mass of the sun, a neutron star will be formed, but if the parent star is twice the mass of the sun a black hole is formed.
Explanation:
A black hole is defined as an area of space whereby the matter is so compacted that nothing can escape from it. This area is called event horizon. Black holes are formed when an enormous star dies in z supernova. They weigh at least twice the sun's mass, and their mass is directly proportional to their radii.
Neutron stars are created during supernova and maintained by a neutron called degeneracy pressure. Neutron star has a small radius, typically 30 km, with a very high density made up of compacted neutrons.
Many types of mining, such as for coal and copper, produce a specific type of water pollution called ________.
A. suspended limestone particles
B. chlorinated pesticides
C. acid drainage
D. radon gas
E. eutrophication
Answer:
C. acid drainage
Explanation:
Many types of mining, such as for coal and copper, produce a specific type of water pollution called ___acid drainage_____.
Answer:D
Explanation:
Europhication: This can be defined simply as the production of organic matter in excess of what an ecosystem is normally adapted to.
You are working in a group taking sediment samples along a transect from a beach, into deeper water. Someone forgot to label the jars and they got mixed up so it is now not clear which sample came from which location. Based on what you know about particle size and transport, how can you arrange the samples in the correct order
Answer:
It is commonly known that the settling time of particles with smaller sizes is higher than that of particles with larger sizes. Therefore, the particles with smaller sizes are moved further offshore. Based on this fact, the proper arrangement will be to arrange the particles according to their sizes from those with the largest sizes (nearshore) to those with the smallest sizes (furthest offshore).
Explanation:
It is commonly known that the settling time of particles with smaller sizes is higher than that of particles with larger sizes. Therefore, the particles with smaller sizes are moved further offshore. Based on this fact, the proper arrangement will be to arrange the particles according to their sizes from those with the largest sizes (nearshore) to those with the smallest sizes (furthest offshore).
The idea of continental drift was not proposed until the 1960s, when the first evidence to support it was discovered. True False
Answer:
False
Explanation:
The theory of continental drift was first proposed by geophysicist Alfred Wegener who believed that due to origin from same continent million years back, animal and plant species in current time though located on different land parcel have similarity in some or the other way.
However, after the acceptance of plate tectonic theory and series of magnetic surveys conducted in 1960, the idea of theory of continental drift strengthened and the wegner's theory was rectified as he proposed that continents do not originate from the ocean surface.
Hence, the given statement is false
Seismic resonance is responsible for the damage caused to building by earthquakes. Apply the concepts of wave energy and resonance to explain how earthquakes damage the man-made structures.
Answer:
The building will vibrate around one particular frequency known as its natural, frequency, the building and ground share the building frequency its said to be in resonance.
Explanation:
Resonance is the frequency of the system to oscillate with a greater velocity than the others as all buildings have a resonance period which is the number of seconds for a building to vibrate and the ground also shows the seismic resonance frequency, the mismatch of the resonance and the wave frequency. Thus taller buildings will be damaged more than shorter structures. These forces create the lateral accelerations that scientists measure by the G-forces. The sudden movement creates enormous stresses for the building's structure, including the beams, the columns, and the walls and the floors, as well as the joints that hold them together. If that stress is large enough, the building can collapse.Answer:
Earthquakes produce traveling mechanical waves known as seismic waves. These waves propagate by vibrating the ground (solid media), water, and to a lesser degree the air, in areas surrounding the epicenter of the earthquake.Energy from the waves also produces vibrations in buildings. If the frequency of the vibrating ground matches the natural frequency of the building, resonance is produced in the form of standing waves that amplify the vibration to levels that can destroy the structures.
Explanation:
Imagine that biostimulation is used on a widespread scale for a bioremediation project.
What ecosystem changes represent a potential side effect of the cleanup efforts?
Answer:
Explanation:
The biostimulation can be define as the process of modifying the environment by the stimulating the growth of bacteria which are capable of conducting the bioremediation. The bioremediation is the process through which the microorganisms are used to break down and decomposed the environmental pollutants from the polluted site.
This can be achieved through addition of the nutrients and electrons acceptors like nitrogen, oxygen, phosphorus and carbon in the from of molasses. These factors are likely to enhance the growth of the bacteria to an extent that can damage the organisms of the ecosystem or the growth factors can be also suitable for the growth of other microorganisms which may infect the other living beings of the ecosystem.
Final answer:
Biostimulation used in bioremediation may lead to disruptions in microbial ecosystems, affecting biogeochemical cycles and plant health, as well as possible biomagnification of biological agents, resulting in health issues for wildlife and humans.
Explanation:
When biostimulation is employed on a widespread scale for a bioremediation project, there are potential ecosystem changes that could occur as side effects. One potential side effect is the disruption of the natural microbial taxonomic distribution and functional profiles which could lead to changes in biogeochemical cycling and overall plant health. Another concern is the possibility of biomagnification, where the biological agents used for cleanup might accumulate in the food chain, potentially leading to issues such as endocrine disruption, birth defects, and other health impacts on both wildlife and humans.
An example of bioremediation is depicted by option E: Using plants to remove toxic metals from soils following a mining operation, which is a type of phytoremediation. This process can sometimes alter soil structure and nutrient cycling, potentially affecting other ecosystem services and biodiversity. These changes could have short-term effects, such as altered hydrology and productivity, or long-term impacts, which might include shifts in the types and numbers of species found in an ecosystem.
ice sheet contains 3 million cubic kilometers of ice. if completely melted, this ice would release about 2.7 million cubic kilometers of water, which would spread out over earth's approximate 337 million square kilometers of ocean surface. how much would the sea level rice
Answer:
8.011 m
Explanation:
Data provided in the question:
Volume of the ice sheet = 3 million cubic kilometers
Volume of the water released by the ice on melting = 2.7 million cubic kilometers
Approximate area of the Earth's ocean surface = 337 million square kilometers
Now,
Volume = Area of the surface × Height
thus,
2.7 million cubic kilometers = 337 million square kilometers × Height
or
Height = 2.7 ÷ 337 kilometer
= 0.008011 kilometer
also,
1 kilometer = 1000 meter
Therefore,
Rise in the sea level = 0.008011 × 1000
= 8.011 m
True or False: The primary function of a weather satellite is to passively observe clouds from space while weather radar is designed to measure the intensity of precipitation.
Answer:
True
Explanation:
I googled it
Answer:True
Explanation:
Weather satellite is primarily used to monitor the weather and climate of the earth. Satellite can be polar orbiting, covering the entire earth geostationary over the same spot of the equator.
Which of the following sites would have the most dangerous volcanoes? A is on an island arc, B is in the Andes, C is near Hawaii, D is along a mid-ocean ridge.
Answer:A
Explanation:On the island arc
The most dangerous volcanoes are likely to be found at Site A. located on an island arc, due to the process of subduction which leads to more explosive eruptions.
Explanation:The level of danger posed by a volcano largely depends on its location and the type of magma it produces. Considering the given locations - an island arc, the Andes, near Hawaii, and a mid-ocean ridge - Site A located on an island arc would most likely host the most dangerous volcanoes.
This is due to the process of subduction which is common at island arcs: one tectonic plate slides underneath another, creating a significant amount of magma, which can lead to explosive eruptions when it reaches the surface. On the other hand, volcanoes in the Andes and near Hawaii tend to be less explosive, typically resulting in more predictable, slower moving lava flows. The mid-ocean ridge volcanoes, such as at Site D, are usually the least explosive as they occur underwater and their eruptions are therefore less likely to impact human populations.
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What is the difference between a cobble-sized piece of colluvium found on slopes and a cobble-sized piece of alluvium found along river beds?
Answer:
Their composition
Explanation:
Colluvium deposits will contain cobble sized deposits ranging from sand to rocks of different types while the alluvium deposits are uniform deposits of cobble sized sand
Wetlands are important for all of the following reasons EXCEPT: A. They support high species diversity. B. They reduce flooding by slowing the velocity of runoff water. C. They help recharge groundwater aquifers. D. They contribute to asymmetry in urban communities. E. They sometimes detoxify substances in the water.
Answer:
Wetlands are important for all of the following reasons except option D
Explanation:
Wetland is a ecosystem which contain water that is present either seasonally or permanently and this water body is rich in species diversity as the water body contain high amount of minerals.w
They are natural detoxifier as they have the capability to reduce the effect of harmful substance that may enter into the ponds, lakes or other water body thus it is also called as the natural kidney of ecosystem.
They reduce the chance of flood by temporarily storing the release of storm water which allows the formation of sediments in the bottom of the water body.
Some fresh water wetlands located at a point where surface water enters into the ground water and thus causes recharge of ground water.
Wetlands are significant for many reasons, including biodiversity support, flood control, groundwater supply, and sometimes detoxification. However, they do not contribute to urban asymmetry.
Explanation:Wetlands serve many crucial roles, including supporting high species diversity, reducing flooding by slowing down the velocity of runoff water, recharging groundwater aquifers, and at times, even detoxifying substances in the water. However, they do not contribute to asymmetry in urban communities, so option D is not a correct reason why wetlands are important.
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What type of plate boundary is directly west (and adjacent) to the plate on which Montana is located?
Answer:
Pacific plate boundary.
Explanation:
The Montana falls in the North American boundary and the pacific plate lies west to this plate and is a major tectonic plate and it consists of the hotspots and in the interior and the Hawaiian islands. Being a major oceans plate its motion is northwestwards. And is considered as a divergent boundary.Answer:
Transform plate boundary
Explanation:
Montana is a part of the North American plate. Towards the west of this city Montana, there is a transform plate boundary, where the Pacific plate slide past the North American plate, giving rise to the formation of the world-famous San Andreas fault. A large number of shallow focus destructive earthquakes are generated every year in this region. This is an earthquake-prone zone. This fault about 1200 kilometers long and passes through the city of California, and here the fault is a strike-slip fault which is right-lateral in nature.
Classify the government of each country by who has the power. Is the government a democracy, a monarchy, or a dictatorship? If it is a monarchy or a dictatorship, explain what kind. (1 point)
a.Japan:The country is ran as a constitutional monarchy ran by the monarchy and checked by the constitution
b.North Korea:North Korea is a dictatorship. Only the dictator holds power.
c.The Philippines:The Philippines are a presidential republic much like the USA
Answer:
Explanation:
Japan: Constitutional monarchy
A form of government in which a non elected monarch functions as the head of the state but within the limits of a constitution is called constitutional monarchy. The power is shared between a government and the monarch. e.g Britain.
Korea: One person Dictatorship
The from of government in which a small group or a person have the absolute power and there are no constitutional limitations on them is called Dictatorship. African nations such as Zimbabwe, Uganda and Asian nation North Korea and Eastern countries such as Syria are dictatorships.
Philippines: Republic democracy
A Presidential system is a a republican and democratic form of government in which the legislative branch is separate form the executive branch and the head of the government leads the executive branch. The head of state is called president and it is a ceremonial post.
A. Japan: Constitutional monarchy
B. Korea: Person Dictatorship
C. Philippines: Republic democracy
A. Japan has a constitutional monarchy where the Emperor serves as a symbolic figurehead, and the government is run by elected officials. The Japanese parliament, known as the National Diet, holds significant authority, and the Prime Minister is the head of government.
B. Korea can refer to two separate countries: North Korea, which operates as a person dictatorship with a single-party rule, and South Korea, a democratic republic with elected leaders and a multi-party system.
C. The Philippines is a republic democracy with an elected President as the head of state and government. The country has a Congress for legislation and an independent judiciary.
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Which rocks would be likely to contain olivine. Select one or more: a. basalt b. andesite c. gabbro d. granite e. peridotite
Answer:
Correct option are Basalt, gabbro and peridotite.
Explanation:
Igneous rocks like basalt, gabbro, dunite, diabase, and peridotite contains the olivine mineral. These are the dark coloured rocks and found within the surface of earth mostly in the areas around the tectonic plates. Olivine is known for its crystallization at high temperatures. It crystallize itself from the heat of the earth. Common olivine minerals are Forsterite, Fayalite, Monticellite and Tephroite.
Basalt, gabbro, and peridotite are rock types that would be likely to contain olivine due to their mafic or ultramafic composition, where olivine is commonly found.
Explanation:The rocks which would be likely to contain olivine are predominantly mafic or ultramafic in composition, due to olivine being a mineral commonly found in such rock types. This would include rocks such as basalt (a), an extrusive igneous rock that is fine-grained and dark-colored; gabbro (c), an intrusive counterpart to basalt that is coarser in texture; and peridotite (e), an ultramafic rock with a high percentage of olivine content. It should be noted that while andesite (b) and granite (d) can have some of the same minerals as those rocks that contain olivine, they are generally considered felsic rocks and are less likely to contain significant amounts of olivine.
The Continental Divide ______.
A.) divides the United States into east and west
B.) divides the United States into north and south
C.) divides the flow of river systems in the United States into east and west
D.) is a series of rivers and mountains that separates Canada from the United States
Answer:
option d is correct I think
The Continental Divide of the Americas is the principal, and largely mountainous, hydrological divide of the Americas. This divide runs from Cape Prince of Wales in western Alaska, through the Rocky Mountains of western Canada and the continental United States, then through the Sierra Madre Occidental mountains in Mexico, through Central America and along the Andes Mountains of South America. Continental divides separate one drainage basin from another. They are used to define the direction that an area's rivers flow and drain into the oceans and seas. The best-known continental divide is in North America and it runs along the Rocky and Andes mountain ranges
Jabo Corporation has its home office and manufacturing facilities in Peru. It sells products via the Internet in both Brazil and Chile, although it has a small sales and manufacturing facility in Santiago, Chile.
True/False
The Jabo Corporation operates in Peru, Brazil, and Chile, making it a multinational corporation that adheres to differing laws and regulations in various countries is True.
Explanation:The Jabo Corporation scenario outlines an example of a multinational corporation which operates in multiple countries. It is based in Peru with manufacturing facilities located there, however, it also has a footprint in Brazil and Chile via online sales and a smaller facility in Santiago, Chile, respectively. This is a common structure for corporations which seek to expand their operations, reach broader markets, and potentially take advantage of financial or logistical benefits within those other locales. It must also be noted that such multinational corporations usually face various laws and regulations in different countries which can affect their operations.
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what two factors lead to high crop yields in europe's agriculture
Answer:
Soil and fertilizers
Explanation:
beacuse these two factors will lead the crops to grow faster...
Answer:Temperature and Rainfall
Explanation:
Temperature : Most plant cannot grow if temperature falls below 6degree celcius or the soil is frozen for five consecutive months.
Rainfall: Water is obviously a key factor in plant growth. The greater the average temperature, the greater the amount of water required for plant growth. Seasonal crops require water at different times.
These are the aforementioned factors that leads to high crop yield in Europe.
Type 43 25 04.18N 113 31 37.38 W in the search bar of Google Earth. Zoom out to an eye elevation of ~90 miles. Based on the size of the area which is dark colored and sparsely vegetated, this region is:A. Shield VolcanoB. Lava domeC. Composite volcano
Answer:
flood basalt
Explanation:
In the given problem, the region is likely a flood basalt. A flood basalt is commonly referred to as a geological feature that is formed from the eruption of a giant volcanic. It can also be formed from several volcanic eruptions that occur over a significantly large area of land as well as an ocean flood that is accompanied by a basalt lava.
The correct Answer is option (A). Based on the coordinates 43°25'04.18"N 113°31'37.38"W and the description of the area being dark-coloured and sparsely vegetated, this region is most likely Shield Volcano
1. Location: The coordinates point to an area in Idaho, USA, specifically within the Snake River Plain.
2. Dark Colour and Sparse Vegetation: These characteristics are typical of regions covered by basaltic lava flows. Basalt, being a dark volcanic rock, covers the ground extensively in shield volcano regions.
3. Geological Features: The Snake River Plain is known for its extensive volcanic activity, particularly from shield volcanoes and lava fields, rather than the steep and more rugged profiles of composite volcanoes or lava domes.
Shield volcanoes are typically broad with gentle slopes, formed by low-viscosity basaltic lava that can cover large areas. This fits the description of a large, dark-coloured, and sparsely vegetated area.
why is it that the west coast of the United States never has problems with tropical cyclones, while tropical cyclones annually cause significant destruction along the east coast of the United States?
Answer:
I believe It's because the Caribbean and Islands further down are more towards the equator since it's warmer. The temperature can have an increase in storms mostly a result of the tropics.
Explanation:
The continental shelf is located ________.a. between the continental slope and continental rise.b. between the continental rise and the abyssal plains.c. seaward of the continental sloped. landward of the continental slope
The continental shelf is located landward of the continental slope. This is the relatively flat, shallow underwater area that extends from the edge of the continent to the continental slope.
Explanation:The continental shelf is located landward of the continental slope. The continental shelf is a relatively flat and shallow underwater extension of the continents. Beyond the continental shelf is the continental slope, which drops steeply into the deep-sea floor. The continental rise is the final region that connects the slope to the abyssal plains, farthest from the continent.
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Climate is highly variable but weather is not. Weather varies over long periods - decades or more. True False
Answer:
This statement is false.
Explanation:
The difference between climate and weather is dictated by the period of time over which atmospheric conditions are measured. When conditions in the atmosphere are measured over a short period of time, it is called weather. When behaviour of conditions is measured over a longer period of time, over years, decades and even centuries, it is called climate. Because it is measured over shorter periods, weather tends to be more variable than climate where climate shows changes over long periods of time.
Why do areas of high altitude (e.g., on the Tibetan plateau) have greater than expected UV intensity and areas of constant cloud cover (e.g., Congo Basin) have less than expected?
Explanation:
UV (ultraviolet) levels are high in the areas of high altitudes. Tibetan plateau being the highest plateau of the world is more exposed to the UV radiations as the atmosphere gets thinner in the areas of higher altitude. So it can not filter the maximum of ultraviolet radiations. Tibetan plateau is on 4,500 meters height and the UV level increase by 10-12% upon every 1000 meter elevation.
However in those areas having the constant cloud cover like in Congo Basin the UV level is low as the clouds scatter the most of the UV radiations and they particularly stop the UV-B radiations. Thats why the cloudy areas have less UV level then the areas having a cloudless clear sky.
Final answer:
The increased UV intensity at high altitudes is due to the thinner atmosphere and reduced water vapor content, which allows more UV radiation to reach the surface. In contrast, areas with constant cloud cover experience less UV exposure due to the clouds' reflection and absorption of UV radiation.
Explanation:
The variation in UV intensity at high altitudes such as the Tibetan plateau can be attributed to several factors. Firstly, high altitudes experience less atmospheric interference, meaning there is a thinner layer of atmosphere for the UV rays to penetrate through - leading to a greater intensity of UV radiation reaching the surface. This phenomenon is partly due to the fact that water vapor, which absorbs UV radiation, is less prevalent at higher altitudes. Additionally, the ozone layer, which absorbs a significant amount of UV radiation, particularly harmful UVB and UVC, is less effective with increasing altitude, letting through more UV radiation.
Conversely, in areas with constant cloud cover, such as the Congo Basin, UV intensity is generally lower. Clouds reflect and absorb UV radiation, limiting the amount that reaches the Earth's surface. Moreover, the moisture-heavy atmosphere associated with cloudy regions further reduces UV penetration. The persistent cloudiness acts as a protective barrier, shielding the surface from direct UV exposure.
Brianna is deciding between planting two crops for the coming season: {corn, beans}. The two possible states of Nature are {good weather and bad weather}, and while beans are more weather resistant, corn is more profitable. g
True/False
Answer:
False
Explanation:
The beans are leguminous crops and are sensitive to the cold environment and won't begin to germinate as until the soil temperature reaches 70 F. While the corn is grown in the tropical subtropical and the temperate climates and can be grown in the woodlands and the grasslands. But needs lots of irrigation and its production is limited in the drover areas.The Earth formed its compositional layers (core, mantle, crust, atmosphere) by accretion in stages: first iron-rich materials, followed by rocky materials, and finally by ices.
Answer:
As described below.
Explanation:
The earth has core is the innermost layer and is made up of iron, nickel, and alloy rich content and is about 2,900 to 5100 km in depth, has a surface temperature that goes up to 5700 K and is responsible for producing the magnetic waves and the semis waves. And there is the densest part of the planet, followed by the cover of the mantle that is made of silicate rocks and ice and planetary layer that undergoes differential density and has a thickness of 2,900 km and is divided into the three layers of the upper, middle and the lower. The uppermost layer is called the asthenosphere and forms the base of the oceanic crust followed by the lithosphere crust. That is igneous, metamorphic and the sedimentary ricks and has a density of 2.83 g/cm.Final answer:
The Earth's layers formed by accretion in stages with gravity separating materials by density, creating the core, mantle, and crust. This process is known as differentiation.
Explanation:
The statement that the Earth formed its compositional layers (core, mantle, crust, atmosphere) by accretion in stages, with iron-rich materials first, followed by rocky materials, and then ices, is true. During the formation and early history of Earth, gravity played a crucial role in separating materials based on their densities. The denser materials, such as iron and nickel, sank to form the Earth's core, while lighter materials rose to the surface to eventually form the crust. This process, referred to as differentiation, led to the creation of distinct layers including the core, mantle, and crust. Earth's atmosphere formed later, consisting of gases that were either released from volcanic eruptions or delivered by cometary impacts. The Earth's structure today is the result of these processes, where the crust is primarily made of lighter elements like silicon, oxygen, and aluminum, the mantle consists of heavier rocks, and the core is composed mostly of iron and nickel.
If you were using both a compass and a map marked with latitude and longitude to navigate, you might note the angle difference between your compass and what is marked on the map, called _______.
a. magnetic inclination
b. magnetic declination
c. magnetic dipole
d. magnetic reversal
Answer:
B. Magnetic declination
Explanation:
Magnetic declination is the tendency of the compass not to point directly to the true North which appears on the map.
From a sample with nequals36, the mean duration of a geyser's eruptions is 3.16 minutes and the standard deviation is 0.82 minutes. Using Chebyshev's Theorem, determine at least how many of the eruptions lasted between 0.7 and 5.62 minutes.
Answer: -3.154 eruptions lasted for 0.7mins and 1.767 eruptions lasted for 5.62mins
Explanation:
The attachment below shows the explanation and how to determine the duration of each eruptions.
Using Chebyshev's Theorem, at least 88.9% (or around 32) of the sample of 36 geyser eruptions would last between 0.7 and 5.62 minutes.
In statistics, Chebyshev's Theorem allows us to predict the proportion of data that falls within a certain number of standard deviations from the mean. The theorem states that at least 1 - 1/k^2 of the data lies within k standard deviations of the mean for all k > 1.
In this case, the mean duration of a geyser's eruptions is 3.16 minutes, and the standard deviation is 0.82 minutes. The interval of 0.7 to 5.62 minutes is roughly calculated to be minus 3 and plus 3 standard deviations from the mean. According to Chebyshev's Theorem, at least 1 - 1/3^2 = 8/9 or 88.9% of the data falls within this range.
As we know the total sample size is 36, we then calculate 88.9% of 36. It results in around 32 geyser eruptions that would last between 0.7 and 5.62 minutes.
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