Answer:
1. Magnetic Properties
Gold in its pure form is not magnetic. If it is placed in a magnetic field, it will magnetize a bit only as long as it is still in the field.
Pyrite on the other hand would stick to a magnet because of its high iron content; same with chalcopyrite.
2. Physical Properties
Gold is highly malleable and ductile. While pyrite and chalcopyrite are both brittle, however, pyrite is harder than chalcopyrite. However, a sample of chalcopyrite would be easily scratched with a nail while pyrite won't.
3. Color
Although, the three might possess almost the same color confusing prospectors, a simple shade test will set them apart. Gold will remain the same even in bright sunlight and in a shade however, pyrite and chalcopyrite change color when viewed in shade. Pyrite and chalcopyrite will look brassy dull yellow or dark in shade.
4. Weight
When flaky and spread on a pan of water, gold sinks to the bottom while pyrite and chalcopyrite floats.
5. Chemical Test
Using Nitric acid, place a few drops on each samples, pyrite and chalcopyrite would definately change color usually to black while gold remains the same.
If you started at the equator on the center of a continent (such as Africa) and headed poleward, what would be the most likely sequence of Koppen climates that you would encounter in their order of occurrence?
Answer:
The equator is located at the centre of earth and as per the koppen climates you would encounter in general would go from the A,B,C,D, and E. Additionally, the actual location of where you start might determine what specific subsets of each climate.
Explanation:
As koppen devised hos climatic classification as according to the vegetation community that is linked with the climatic zones such as the A Tropical Which shoes the wet and the dry regions and such as the rainforest and the grasslands and B Dry, desert climate with the seasonal flowering plants. Then there is C mesothermal that is the Mediterranean climate and mico-thermal found at the subarctic and the E as the polar climate which has ice caps.Koppen climate is a classification method used for dividing and understanding the climates based on five zones based on temperature and precipitation of the area.
You would encounter the Koppen climate change from A, B, C, D and E. Also the exact location will determine the subsets of the climatic zones.
What is the Koppen Classification?The various climates of the Koppen classification are A- tropical, B - dry, C - temperate, D - continental and E - polar. The centre of the earth is the equator and will have experienced all the climatic zones when moving from the middle towards the polar region.Therefore, when moved from the equator towards the poles all the climatic zones in their order will be encountered.
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______ are solid, icelike structures composed primarily of methane that are formed in high-pressure locations such as the deep-ocean floor
Gas hydrates are solid, icelike structures composed primarily of methane that are formed in high-pressure locations such as the deep-ocean floor
Explanation:
Gas hydrates are crystalline ores that make during below molecular mass gas merges with water and turns into a solid following low temperature and average pressure circumstances. Their breakdown can discharge massive quantities of gas, which could influence Earth’s climate.
It is not steady at average sea-level pressures and temperatures, which is the initial reason that it is a provocation to examine. The hydrate reservoir may have an influential impact on the atmosphere and climate because methane is a vital greenhouse gas.
What is the nearest plate boundary to Washington State? What type of boundary is this?
Answer:
For about 200 million years the Pacific Northwest region has been at an active plate boundary, specifically an ocean-continent convergent plate boundary with a subduction zone. Subduction has created most of the volcanoes and mountain ranges of the Northwest.Jul 16, 2013
Explanation:
According to the study discussed in the text, in which of the following countries do college-educated adults aged 25-64 have the highest level of trust in government?
Answer:
Answer is China.
Explanation:
The trust developed in the Chinese government by the college - educated adult was because the way the teachers in China were placed, and rated.
It was discovered that the teachers in China were the highest rated in the world. This is because ,the teachers are of high status and respected. This the due to the emphasis laid by the Chinese culture on the importance of education.
Fill in the blanks with the words below:
Oslo, Canberra, Ottawa, Jakarta, Buenos Aires, Nairobi
1. ________ is the capital of Norway.
2. ________ is the capital of Australia.
3. The capital of Kenya is ________.
4. The capital of Canada is ________.
5. The capital of Argentina is ________.
6. ________ is the capital of Indonesia.
1. Oslo is the capital of Norway.
2. Canberra is the capital of Australia.
3. The capital of Kenya is Nairobi.
4. The capital of Canada is Ottawa.
5. The capital of Argentina is Buenos Aires.
6. Jakarta is the capital of Indonesia.
1. Oslo is the capital of Norway: Oslo is the largest city in Norway and serves as its capital. It's situated in the southern part of the country and is known for its cultural heritage and modern amenities.
2. Canberra is the capital of Australia: Canberra is Australia's capital city, located in the Australian Capital Territory. It was purpose-built as the capital and is home to important governmental institutions.
3. The capital of Kenya is Nairobi: Nairobi is the capital and largest city of Kenya. It's a major economic and political hub in East Africa, known for its diverse culture and urban development.
4. The capital of Canada is Ottawa: Ottawa is the capital of Canada and is situated in eastern Ontario. It's known for its historic landmarks, governmental institutions, and cultural attractions.
5. The capital of Argentina is Buenos Aires: Buenos Aires is the capital and largest city of Argentina. It's located on the eastern shore of the Río de la Plata and is a vibrant center of culture, art, and commerce.
6. Jakarta is the capital of Indonesia: Jakarta is the capital and largest city of Indonesia. It's located on the northwest coast of the island of Java and is an important economic and cultural center in the region.
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Which of the following is one of the reasons scientists strongly believe in plate tectonics?a. volcanic zonesb. trenchesc.ridgesd. earthquakese. all of above
Answer:All of the above
Explanation: before plate tectonics people were having different geologic features that are unique to there regions but has times goes by plate tectonics has unified all these descriptions, which is saying that the earth outer shell is divided into several plates that glides over the mantle .As the plate pull apart, crash together, slide past each other they fuel volcanoes , generate earthquakes and push up mountains .
Answer:
all of the above
Explanation:
1. What percent of the Earth’s surface is covered by oceans? How did you calculate this percentage?
The Earth's surface is covered by 71 percent of the Ocean. As result, the Earth's surface has another 29 percent of green space which needs to be taken into account by the people.
Write about the Earth's Surface.The Earth's Surface is the surface that has made the living conditions for the people. The Earth's Surface over the years has been very much important and also looked into the understanding of the same.
The Erath's Surface is pretty much solid and also very hard with a lot of rocks and also plateaus. There are also a lot of mountains which have covered the land. The Earth's surface is very much rich in minerals because of the surface of the Earth. The other most important thing is that the understanding of the same would have been understood to have taken place.
The Earth's Surface is made up of nitrogen and also Oxygen. in fact the Earth's Surface has also a lot to do with it and thus makes it understandable.
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Consider the possible scenarios and determine which of them are true for positive feedbacks or negative feedbacks. Select the three that apply View Available Hint(s) Select the three that apply Increased evaporation resulting from a temperature rise can produce more clouds which can potentially lead to a positive feedback If ice cover melts due to a temperature rise the result will be decreased albedo or reflectivity which can potentially lead to a positive feedback Increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to a positive feedback If ice cover melts due to a temperature rise the result will be decreased albedo or reflectivity which can potentially lead to a negative feedback Increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to a negative feedback Increased evaporation resulting from a temperature rise can produce more clouds which can potentially lead to a negative feedback
Answer:
"Third statement" follows both positive and negative feedback.
Explanation:
Increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to a negative feedback. it is very common sense that remove of CO2 from atmosphere is not good for atmosphere.
Increased evaporation resulting from a temperature rise can produce more clouds which can potentially lead to a negative feedback. increased evaporation lead to more salinity of water that is not good for environment.
If ice cover melts due to a temperature rise the result will be decreased albedo or reflectivity which can potentially lead to a positive feedback. when their will be decreased albedo mean energy absorbing capacity increases, its good.
All the above 3 statement are true for positive or negative feedback.
The three scenarios denote feedback loops in environmental context. Increased evaporation and decrease in albedo are positive feedback loops, increasing the initial change. Increased plant photosynthesis is a negative feedback loop, mitigating the initial change.
Explanation:In these scenarios, we are dealing with instances of feedback loops in an environmental context, which comes under Biology. A feedback loop refers to the response to a particular process, that in turn affects that very process.
Firstly, an increase in evaporation due to a temperature rise leading to more cloud formation is likely a positive feedback loop. This is because the additional clouds may trap heat and further increase the temperature, accelerating the initial change.
Next, when ice cover melts due to a temperature rise, indeed, the result will be a decreased albedo or reflectivity. This is also a positive feedback, as less heat will be reflected back into space and more will be absorbed, raising temperatures further.
Finally, increased plant photosynthesis due to temperature rise removes carbon dioxide from the atmosphere, which would actually present a negative feedback loop. As photosynthesis removes CO2—an important greenhouse gas— from the atmosphere, it cools the atmosphere and works against the initial change, hence a negative feedback.
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Name some Oceans and Gulfs?
Answer:
Oceans:
Atlantic ocean
Pacific Ocean
Arctic Ocean
Indian Ocean
Gulfs:
Gulf of mexico
Gulf of california
Gulf of Aden
Explanation:
The geologist determines there is 78.3% of the parent remaining in the sample that they examine. How old is the sequence of rocks?
a. 187.5 million years
b. 247.8 million years
c. 390.7 million years
d. 2.504 billion years
e. 1.588 billion years
f. 1.202 billion years
Answer:
e. 1.588 billion years
Explanation:
the sequence of rocks IS 1.588 billion years
What can be done to stabilize a steep, high, dangerous rock cliff or roadcut to keep it from collapsing onto a highway or railroad track
Answer:
Inserting rock bolts.
Explanation:
A rock bolts is a long bolt that is used for bracing while carrying out rock excavation on dangerous rock cliffs, road cuts etc. It is done by spreading out the rock bolts through the drilled bolts in the rock, this will help to keep rock fractures together. In the 1890's was the first time rock bolt was used in mining operation as a from of safety in mining to avert the danger of collapse.
Stabilizing a dangerous rock cliff or roadcut can be done through the use of rockfall netting, rock bolts, controlled blasting, or setting up a retaining wall. These methods prevent falling rocks from reaching highways or railroads.
Explanation:To stabilize a steep, high, dangerous rock cliff or roadcut and prevent it from collapsing onto a highway or railroad track, numerous techniques can be employed. Rockfall netting, which is a metal or wire mesh, is one method. This netting is laid over the exposed surface to catch falling debris and prevent it from reaching the road. Another method is to use rock bolts, which are long anchoring rods drilled into the unstable rock to stabilize it. Some areas use a technique called controlled blasting to ‘prescribe’ the steepness and shape of the terrain and minimize the chancing of any unexpected rockslides. A further option is building a retaining wall at the base of the slope to hold any loose rocks or soil in place.
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When new oceanic lithosphere is generated at an oceanic ridge, what happens to the two plates on either side of the ridge?
Answer:
The two plates becomes larger
Explanation:
The mid-oceanic ridges are the landforms that are formed at the divergent plate boundaries, and these represent the spreading zone. The magma below the earth's crust becomes so hot and pushes upward with great force, as a result of which the magma comes out at the seafloor, resulting in the addition of new materials to the oceanic crust.
This formation of new crust results in the expansion of the plates. The size of the plates becomes larger on both sides of the ridge. The rocks that are formed along the mid-oceanic ridges are the geologically the youngest rocks.
The line connecting the points of maximum flattening on Earth's surface is called the ________.
Answer: AXIS.
Axis in geography can be said to be an imaginary line around which an object turns. Usually a round object, can be a planet, asteroid, moon etc.
The points where an axis intersects with an object's surface are the object's North and South Poles.
Rotation about a fixed axis is a special case of rotation. Whereby an object rotates along an imaginary line.
When designing storyboards, it is a good idea to use different colors to Group of answer choices
True/False
Answer:
True, but the colors need to a have a theme so it dose not look messy
Explanation:
P and S waves from an earthquake travel at different speeds, and this difference helps locate the earthquake "epicenter" (where the disturbance took place). a. Assuming typical speeds of 8.5 km/s and 5.5 km/s for P and S waves, respectively, how far away did an earthquake occur if a particular seismic station detects the arrival of these two types of waves 1.5 min apart? b. Is one seismic station sufficient to determine the position of the epicenter? Explain.
Answer:
(a) Since both P and S wave travels the same distance, so it can be written as: Δx = V₁t₁ = V₂t₂,
Where, V₁- Speed of S wave
V₂- Speed of P wave
t₁- time taken by S wave
t₂- time taken by P wave
Therefore, t₁ > t₂ (since, time taken by S wave is longer than P wave)
⇒ t₁ = t₂ + 1.5 min
⇒ t₁ = t₂ + 90 sec
⇒ V₁ (t₂ + 90 sec) = V₂ (t₂)
⇒ V₁t₂ + V₁ (90 sec) = V₂ (t₂)
⇒ V₂t₂ - V₁t₂ = V₁ (90 sec)
⇒ t₂ (V₂- V₁) = V₁ (90 sec)
⇒ t₂ = {V₁ (90 sec)} ÷ {(V₂- V₁)}
⇒ t₂ = {5.5 × (90 sec)} ÷ {(8.5 - 5.5)}
Therefore, t₂ = 165 sec
Since, Δx = V₁t₁ = V₂t₂
Now, Δx = V₂t₂ = (8.5 × 165 sec)
⇒ Δx = 1402 km
Therefore, Δx is approximately 1400 km (this means that the earthquake occurred at a distance of about 1400 km from the recorded seismic station)
(b) No, Only seismic station is not sufficient to detect the epicenter of an earthquake. Seismologists and geologists usually use the triangulation method in order to determine the exact location of the epicenter. This is possible by the use of three seismographs that are placed at three different locations nearby to that earthquake occurring position.
Which region of the state is known primarily for its production of citrus fruits and vegetables? a. Gulf Coast regionb. Central Corridorc. Border aread. Plains region
Answer:
C. Border area
Explanation:
Because or the semitropical climate at the border areas like Texas cultivation of citrus and vegetables is easy. The valley of Rio grande and the Winter garden in South Texas are the major producers of these two crops
Answer:
Border Area
Explanation:
border area of South Texas and Rio Grande Valley
Best model to predict the number of earthquakes occurring at a place based on historical data?
Answer:
ricter scale
Explanation:
How has our ability to use nature, such as the development of dams, allowed us to become a major food-producing nation
Answer:
advancement of agriculture
Explanation:
f hunger is the driving force of human and it is fulfilled by food production through agriculture. ... All though you can live your life through food from other resources like Fishing, Hunting, and gathering.
Our ability to use nature such use of dams has allowed us to become a major food-producing nation because the artificial structure leads to advancement of agriculture because if facilitate artificial irrigation.
Basically, the need for food and hunger is the driving force of human and it is fulfilled by food production through agriculture. ..
Human live their life through food from other resources like Fishing, Hunting, and gathering.
In conclusion, the human ability to use nature such use of dams has allowed us to become a major food-producing nation because the artificial structure leads to advancement of agriculture because if facilitate artificial irrigation.
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Which of the following characterizes slash-and-burn agriculture in Sub-Saharan Africa?
Farmers generally produce enough to feed their families and sell any surplus at the local market.
In slash-and-burn agriculture, the cleared land is used exclusively to raise livestock.
Slash-and-burn agriculture only recently has been introduced to the region.
Slash-and-burn agriculture utilizes machinery such as tractors, combines and center-pivot irrigation.
Slash-and-burn agriculture is the most productive of all forms of agriculture.
Answer:farmers generally produce enough to feed there families and sell any surplus at the local market
Explanation: this is a type of shifting cultivation where a farmer clears an area of a forest and then burn it before planting only to move to another part when that area looses it's fertility or the fertility is been reduced.
a) Farmers generally produce enough to feed their families and sell any surplus at the local market.
Clearing Land: Farmers begin by clearing a patch of forest land. They cut down trees and underbrush to create space for farming.
Burning Vegetation: After the vegetation is cut, it is allowed to dry before being burned, usually just before the rainy season. The burning process creates ash, which serves as a natural fertilizer, enriching the soil with vital nutrients.
Cultivating Crops: With the nutrient-rich soil, farmers plant their crops. Typically, they may grow staples such as tubers or grains. This initial period often allows for high productivity.
Although agriculturally productive, _______ does not usually produce a food surplus because it must grow enough to feed its dense population.A. the Liao-Songhua BasinB. the Northeast China PlainC. the North China Plain638598Quiz # 6 Week 6
D. Xinjiang
Answer:
B. the Northeast China Plain
Explanation:
The large scale basin is formed by the large deposits of the yellow rover and the large alluvial plains and the river flows through the middle of the plain to the Bohai sea. The great delta is created by the river extends over much of Henan, and the Hebei, and the Shandong provinces and the southern parts of the plain have been traditionally referred to as the cradled of the Chinese civilization and this plain covers an area of about 409,500 km square.The North China Plain does not usually produce a food surplus despite its productive agriculture due to the need to support its densely populated area, with Beijing on its border and the busy port of Tianjin nearby.
Explanation:Although agriculturally productive, the North China Plain does not usually produce a food surplus because it must grow enough to feed its dense population. The North China Plain, with its average density of one thousand people per square mile, is under constant pressure to produce substantial amounts of food to support its population. The plain is bordered by Beijing and its nearest port, Tianjin, has been expanding and developing into an economic hub of industrial activity. This region relies on its agriculture to provide food and raw materials, with cotton serving as an example of a key industrial crop grown in the North China Plain. The Yellow River (Huang He River) flows through this plain, providing necessary water for the extensive agricultural operations such as wheat, sorghum, corn, and soybeans, alongside smaller plots of vegetables, fruits, and tobacco.
According to the fossil record on Earth, the earliest-known life-forms were primitive ________.
Answer:
The fossilized microorganisms found in the hydroscopic vents.
Explanation:
These life forms are known to have been first appeared the earth and thus they were in the firms of the earth at least about the 3.77 billion and old as 4.28 billion years. And these microfossils were found in the primitive rocks formed near the Australian origin. They were in the appearance of the bacteria the single-celled worms and the hydro thermal vents provided them with the adaptable conditions of their growth and development.Answer:
Bacteria
Explanation:
Based on the conceptual models of warm and cold fronts over the continental US as presented in chapter 11, identify each of the following as being a characteristic of either a warm front or cold front. advancing warm, moist air overruns cooler and drier air stable conditions along the ont in winter,rain, freezing rain, sleet and snow are common advancing cold, dry air vigorously lifts slower moving warm, moist air
Answer:
advancing warm, moist air overruns cooler and drier air --- Warm front.stable conditions along the font --- warm front.in winter rain, freezing rain, sleet and snow are common --- Warm front.advancing cold, dry air vigorously lifts slower moving warm, moist air --- Cold front.Explanation:
The cold weather font is described as the change over of the cold air mass and they replace the warm fronts and usually move for the northwest to the southeast. The freezing and the snow are more common in the northern parts of the warm fronts and they occur if the warmer layer is deep and only a shallow layer of below freezing in the air. As the stationary front marks the boundary between the two air masses and often occurs due to the changing character of the low air masses and are especially found when the front is in an area of the low pressure.For a given sand soil, the maximum and minimum void ratios are 0.78 and 0.43, respectively.
Given that Gs = 2.67, determine the dry unit weight of the soil when the relative density is 65% (in lb/ft^3).
Answer:
hope this helped
Explanation:
a.) Dry unit weight b.) Void ratio c.) Porosity d.) Degree of saturation Solution: a) γd= γ1+?= 17.611.108= 15.89 kN/m3b) γd= γ? ?1+15.89 = (2.67)(9.81)1+e = 0.65 c) n = e1+= 0.651.65= 0.39 d) Se = wGsS = (0.108)(2.67)0.65x 100% = 44.50% 3.2Refer to Problem 3.1. Determine the weight of water, in KN, to be added per cubic meter of soil for: a.) 80% DEGREE OF SATURATION b.) 100% DEGREE OF SATURATION Solution: a. ) S = v? ??∆S = 80 –44.50 = 35.5% n = v? ?; VT = 1m3 0.39 = v? 1Vv = 0.39 0.355 = v? 0.39; Vw = (0.355)(0.39) Vw = 0.140 m3 Ww = 0.140 x 9.81 = 1.37 Kn
Final answer:
The dry unit weight of the soil at a 65% relative density, with a specific gravity of 2.67, is approximately 106.6 lb/ft³.
Explanation:
To determine the dry unit weight of the soil at a 65% relative density, we first need to calculate the void ratio at this relative density using the formula for relative density (Dr):
Dr = (emax - e) / (emax - emin)
Where:
emax = maximum void ratio
e = current void ratio
emin = minimum void ratio
From the given 65% relative density (0.65) and the maximum (0.78) and minimum (0.43) void ratios, we can solve for e:
e = emax - Dr*(emax - emin)
Plugging in the given values:
e = 0.78 - 0.65 * (0.78 - 0.43) = 0.555
Now, we use the formula for dry unit weight (γd):
γd = (Gs * γw) / (1+e)
Where:
Gs = specific gravity of soil solids
γw = unit weight of water (62.4 lb/ft³)
e = current void ratio
Plugging in the known values:
γd = (2.67 * 62.4) / (1 + 0.555) = 106.57 lb/ft³ (approximately 106.6 lb/ft³)
Which of the following practices does very little to control soil erosion?
a. no-till planting
b. root-level irrigation
c. terracing of hillside farms
d. industrial monoculture
e. agriculture
Answer:
industrial monoculture agriculture
Explanation:
Answer:
cda
Explanation:
A drainage mat (drainage blanket) is usually placed: Select one:
(A) Vertically
(B) Horizontally
(C) Around perforated drainage pipes
Answer:
a is the answer 100% vertically
Explanation:
Typically, the drainage mat or blanket is positioned horizontally. Therefore, the correct option is B.
It is applied as a layer or barrier in landscaping or construction projects to help drain excess water. The job of a drainage mat is to create a path for water to flow horizontally and away from the area. It is installed on a flat surface like ground or roof.
The mat is made of a porous material that allows water to pass through but prevents soil or other debris from blocking the drainage system. Drainage mats work best when laid horizontally because they efficiently collect and direct water, which increases drainage and prevents water build-up in the area below.
Therefore, the correct option is B.
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You are watching a total lunar eclipse from Wellington, New Zealand. I'm in Sydney, Australia, 2200 km away from Wellington, and the Moon is above my horizon. What do I see when I look at the Moon?
Which of the following increases with distance from a mid-ocean ridge?
a)the age of oceanic lithosphere
b)the depth to the sea floor
c)the thickness of the lithosphere
d)all of the above
Answer:
d) all of the above
Explanation:
As the concept of the seafloor spreading takes place on the earth the older and more denser plates thus to move far away from the mid-oceanic ridges that is continuous source of the lava flows and is a divergent plate boundary and is thus the age, density, and the thickness of the oceanic crust increase with the distance from the ridges.The age of oceanic lithosphere, the depth to the sea floor, and the thickness of the lithosphere all increase with distance from a mid-ocean ridge.
Explanation:The correct answer is d) all of the above. As you move away from a mid-ocean ridge, the age of the oceanic lithosphere increases. This is because new oceanic crust is continuously being formed at mid-ocean ridges, pushing older crust away from the ridge.
The depth to the sea floor also increases with distance from a mid-ocean ridge. This is because as the newly formed crust moves away from the ridge, it cools and contracts, causing it to sink deeper into the mantle.
The thickness of the lithosphere also increases with distance from a mid-ocean ridge. Again, this is due to the cooling and contraction of the oceanic crust as it moves away from the ridge.
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In North America, which of the following climate zones fall within areas that primarily average between 40 and 59 inches of precipitation annually or higher?
Humid subtropical, moist all year, hot summer (Cfa)
Tropical, subtropical hot desert (BWh)
Humid continental, hot summer (Dfa, Dwa, Dsa)
Midlatitude cold steppe (BSk)
Subarctic, cool summer (Dfc, Dwc, Dsc)
Answer:
Humid subtropical, moist all year, hot summer (Cfa)
Explanation:
The CFA is a type of the climate that is humid subtropical and is characterized by the hot and the humid summers and has a cold to mild winters and the open system this type of the climate is either called as the as humid subtropical climates or mild temperate climates. And this occurs in the North America and the Europe.As the glaciers in North America melted, the runoff formed a large lake in what is now southern Manitoba, eastern North Dakota, and western Minnesota. Called Lake Agassiz, it was larger than all of the current Great Lakes combined. The present Lake Winnipeg is a remnant of this ancient lake. The City of Winnipeg is located on the ancient lakebed. What kinds of soils would you expect to find beneath the city, and what would be their likely geologic origin? What would be the typical engineering characteristics of these soils?
Answer:
1.lacustrine clays and silts
2.The likely geologic origin will be water disposition
3. strength and compressibility
Explanation:
What kinds of soils would you expect to find beneath the city
Answer->lacustrine clays and silts
what would be their likely geologic origin
-The likely geologic origin will be water disposition.
disposition can be defined as a situation whereby a material transported by water is deposited.
What would be the typical engineering characteristics of these soils?
The engineering characteristics will be found in its strength and compressibility. It has the capacity to withstand external force.
They are grainlike with dimension of about 0.06mm, Sedimentary in property and can be used for engineering activities
The soils beneath Winnipeg, once part of Lake Agassiz, consist primarily of lake sediments like clay, silt, and fine sand. They are remnants of the post-glacial lake deposits. Such soils possess unique engineering characteristics, including low permeability but high compressibility and shrink-swell potential, which require special engineering considerations.
Explanation:The soils that we would expect to find beneath the city of Winnipeg, which is located on the ancient Lake Agassiz lakebed, would likely be composed mainly of lake sediments. Over thousands of years, these sediments would have compacted and transformed into layers of clay, silt, and fine sand. Geological origin of such soil is post-glacial lake deposits.
From an engineering perspective, these types of soils can be both challenging and beneficial. Their low permeability makes them an excellent barrier against seepage (e.g., for landfills or man-made lakes), however, their high compressibility, plasticity, and shrink-swell potential can cause problems for construction. For instance, the construction of buildings or infrastructure on these soils often require special considerations to avoid settlement problems.
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Using the Wilson cycle, very briefly (a sentence or two) explain the formation of mountain ranges such as the Appalachians and the Urals. In what ways do mountains like these provide evidence for reconstructing the ancient history of plate motions
Answer:
According to the Wilson cycle, the plate motion takes place continuously as a result of which the divergent motion of the continental plates results in the formation of the rift valley and oceans. These continuous divergent motion of continental plates results in the convergent of continental plates at some other places, which give rise to the formation of the large mountain and mountain ranges.
These Mountain ranges are the large geological landforms that are constructed due to the convergent motion of two continental tectonic plates.
For example, the Appalachians were formed due to the collision of the North American and the North African plate, about 480 million years back, which are now separated by the Atlantic ocean
The mountain belt of Urals was formed due to the collision of the eastern European and Kazakhstan continent that occurred from the late Paleozoic time to the early Triassic age.