Answers
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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Related Questions
Subduction zones are able to produce M9 earthquakes (unlike transform or divergent) plate boundaries becauseA) the volcanic activity at subduction zones makes the fault plane stickier and therefore they release more energy when they reach their elastic limit.B) many people live along the coast of subduction zones, making a large segment of the population vulnerable.cC) the length of the rupture can be so large (up to 1200 km in a megathrust event) and the amount of slip is large.D) these types of faults typically have frequent earthquakes (every year or so), just so there isn't a lot of stress that builds up along the fault contact zone.
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Answer:
A) the volcanic activity at subduction zones makes the fault plane stickier and therefore they release more energy when they reach their elastic limit
Explanation:
As the plate boundaries are very shallow and are able to produce very large earthquakes and thus release more energy when the slabs descent to the mantel and viscosity changes and causes the plates to move bend and deform and thickness of the slabs is also an important factor that determines the high magnitude earthquakes.Which statement is true? Select one: O a. tornadoes are the deadliest form of weather in the United States stion b. most fatalities from tornadoes are from weak tornadoes because they are far more numerous that violent tornadoes c. most tornadoes go unwarned, which is why they re so deadly o d. Since 1975, the frequency of tornado outbreaks that have resulted in more than 100 deaths per year is much less than before 1975 O e. tormadoes are named using a alphabetical namelist that repeats every 6 years.
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Answer:
a. tornadoes are the deadliest form of weather in the United States.
Explanation:
The tornados are the most deadliest type of the storms and they have resulted from more than 100 deaths. They are a most common types of the storms that are received in the united state and gets annually more than 1200 storms and are quite violent types and occur along the great plains and the Mississippi River valley and the other southern parts.A geologist examines the chart and claims to know which magma sample is andesitic. Which sample is the geologist referring to?
Answers
Answer:
Fine-grained extrusive igneous rock
Explanation:
The andesitic sample is a fine-grained rock formed from stratovolcanoes. It solidifies quickly on reaching the surface. It is an intermediate sample between basalt and granite. It is an extrusive igneous rock. They have relatively high aspect ratio which implies that it is thick and advances only short distance down the volcano edges.
Answer: Hopefully the chart you referred to is the one attached in the image below.
Then the correct answer will be magma sample B. Containing more than 60% of silica and a high water vapour level.
Andesite is a class of fine-grained intermediate igneous rock, of volcanic origin, containing mostly plagioclase feldspar. They contain between 57% to 63% of Silicon oxide (SiO2). They are also a major component of the Martian crust
At one point in the discussion, Ambassador Iogu comments, "Malaria is not a problem in most of the developing world, although that may be changing." This comment is not followed up in the case study. What changes could the ambassador be referring to
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Answer:
Hi
This disease constitutes a health problem of great importance in much of the tropical and subtropical countries. The Centers for Disease Control and Prevention in the United States estimates that 300 to 500 million cases of malaria occur each year. More than 1 million people die from this disease. Malaria is a much higher disease risk for travelers in hot climates, for example, in the United States, about 1500 cases of malaria are diagnosed each year. The vast majority of cases correspond to travelers and immigrants returning from places in the world where there is malaria transmission, such as Africa and South Asia. Because this disease causes so many cases of illness and death, malaria causes great losses to the difficulties of many countries. Because many countries with malaria are among the poorest nations, the disease maintains a vicious cycle of poverty and disease.
Explanation:
Which country is NOT located within one of the world's three largest population clusters:
A.Japan
B.the United States
C.Pakistan
D.France
Answers
Answer:
B.the United States
Explanation:
Answer:
c
Explanation:
In this method of land preservation, countries promise they will preserve important habitats in return for the forgiveness of loans to other countries.a. Ecotourism. b. Estalishment of biological reserves. c. Small sclae sustainable farming.d. Debt for nature swap.e. Phase-out economic practices such as farm subsidies.
Answers
Answer:
Debt for nature swap
Explanation:
Debt for nature swaps are designed to relieve developing countries of two devastating problems: spiraling debt burdens and environmental degradation .Ina debt for nature swap, developing country debt held by a private bank is sold at a substantial discount on the secondary debt market to an environmental nongovernmental organization (NGO). The NGO cancels the debt if the debtor country agrees to implement a particular environmental protection or conservation project. The arrangement benefits all parties involved in the transaction. The debtor country decreases a debt burden that may cripple its ability to make internal investments and generate economic growth. Debt for nature swaps may also be seen as a good alternative to defaulting on loans, which hurts the country's chances of receiving necessary loans in the future
Why is air pollution an increasing problem in developing countries? Question 20 options: The global distillation effect brings more pollutants into developing countries than they produce locally. In the desire to industrialize rapidly, less expensive but outdated, more polluting technologies are being adopted. Developing countries are located in areas that tend to suffer from thermal inversions. Most people in developing countries now own two cars exacerbating urban heat islands and dust domes.
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Answer:
Right choice:
In the desire to industrialize rapidly, less expensive but outdated, more polluting technologies are being adopted.
Explanation:
Which type of soil can cause lateral movement (water travels sideways) to ditches carrying nutrients with it?
Answers
Answer:
Sandy soil
Explanation:
Water movement in soils is called soil hydrology. The soil texture, the soil structure and gravity affects soil hydrology.
In sandy soil, the particles are largest compared to other types of soils, and these particles are held loosely together.
Water will move laterally in the soil profile if there is enough pore space in that soil (which sandy soils possess). This movement is aided by the capillary action of water in small spaces. The water will bind to the edges of the pores and slowly move laterally and even upward if the voids are small enough.
The Intertropical Convergence Zone is associated with weather patterns near the equator.
True or false?
Answers
Explanation:
Final answer:
The statement is true. The Intertropical Convergence Zone is indeed associated with weather patterns near the equator.
Explanation:
The statement that the Intertropical Convergence Zone (ITCZ) is associated with weather patterns near the equator is true. The ITCZ is a region near the Earth's equator where the trade winds of the Northern and Southern Hemispheres come together, causing air uplift and leading to frequently cloudy and rainy weather.
It's an integral part of the global circulation of the atmosphere, contributing to precipitation patterns and influencing climate zones. The appearance of heavy rain and thunderstorm activity associated with the ITCZ designate it as a crucial component in tropical weather patterns.
Regarding the formation of tropical cyclones, they often originate from disturbances along the ITCZ. These systems can intensify into tropical cyclones when conditions are favorable, including warm sea surface temperatures and low vertical wind shear.
Once developed, tropical cyclones, known as hurricanes, typhoons, or simply cyclones in different parts of the world, have profound impacts on the weather and environments where they make landfall. Powerful winds, heavy rainfall, and the Coriolis effect, which influences their rotation direction, are pivotal characteristics of these systems.
Moreover, tropical cyclones can form within the tropical regions between the Tropics of Cancer and Capricorn, and they are significant drivers of weather phenomena such as high precipitation and strong wind patterns in these areas.
They also vary in their impacts depending on the region, with the potential for increased strength and precipitation due to changing climate conditions.
Which European countries’ colonial possessions prevented the British from controlling the entire east coast of Africa from the Gulf of Aden to the Cape of Good Hope?
Answers
The establishment of colonies by Germany, Portugal, and France in Africa during the 19th century prevented Britain from controlling the entire east coast of the continent. These nations claimed and controlled various territories, blocking British expansion in several crucial areas.
Explanation:The European countries that prevented the British from controlling the entire east coast of Africa from the Gulf of Aden to the Cape of Good Hope were Germany, Portugal, and France.
In 1891, Germany established the colony of German East Africa, which encompasses today's Burundi, Tanzania, and Rwanda, effectively blocking the proposed railway's path. Also, Portugal objected that it controlled the land between its colonies of Angola and Mozambique, encompassing much of what Rhodes claimed as part of Rhodesia. Another significant player was France, who had control over regions in West and East Africa, including Djibouti (French Somaliland) and parts of today's Republic of the Congo and Democratic Republic of the Congo.
This compartmentalization was an outcome of the 'Scramble for Africa' during the Berlin Conference of 1884–1885 where European powers agreed upon the division of Africa amongst themselves, which limited the extent of British control over the African continent.
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Which of the following is an example of an ecosystem service provided by forests?
A. Raw material for clothes
B. Biomass for energy production
C. Climate regulation
D. Medicinal chemicals
Answers
Answer:
C Climate regulation
Explanation:
Ecosystem service provided by forests is Climate regulation
What is an ecosystem?An ecosystem consist of all living and nonliving things that make up the environment.
It includes microrganism that cannot be seen, animals and plants that makes up our environment. The interaction of a the organisms makes up an ecosystem.
Therefore, ecosystem service provided by forests is Climate regulation.
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