Answer:
SO2 and NOx
Explanation:
The oxides of Sulphur and Nirogen are the major constituents of acid rain. These oxides combine with the water vapor present in the atmosphere and form sulphuric and nitric acid and thus it rains acid.
The region of the United States most harmed by acid rain is the East Coast, including the Appalachian Mountains and the Northeast. In India the Agra Taj Mahal color is changing from white to Yellow because of acid rain. Acid rains are harmful for are agricultural land as well.
Question 1 If the energy returned from a resource is 20 MW and the energy invested for the same is 5 MW, the EROI of the process will be O 100 5 4 O 0.25
Answer:
4
Explanation:
The formula for calculation of EROI is :
[tex]EROI=\frac {\text{Energy delivered}}{\text{Energy required to deliver energy}}[/tex]
Thus,
Energy returned = 20 MW
Energy invested = 5 MW
So,
[tex]EROI=\frac {\text{Energy delivered}}{\text{Energy required to deliver energy}}=\frac {20\ MW}{5\ MW}=4[/tex]
The EROI of the process will be 4.
Which of the following represents 7.1×10-55 in standard notation?
7100.00
710000
7.1
.000071
Answer:
0.000071
Explanation:
The given number that is given in scientific notation is, [tex]N=7.1\times 10^{-5}[/tex]............(1)
We need to write this number in standard notation. A number can be written in scientific notation as :
[tex]N=a\times 10^b[/tex]..........(2)
In standard notation, [tex]N=7.1\times 10^{-5}=\dfrac{71}{10}\times 10^{-5}[/tex]
[tex]N=\dfrac{71}{10^{6}}=0.000071[/tex]
So, [tex]7.1\times 10^{-5}[/tex] is equivalent to [tex]0.000071[/tex]. Hence, the correct option is (d)
What is the long-term impact of population growth on supply and demand? Supply will decrease and demand will increase. Supply will remain constant and demand will decrease. Supply will increase and demand will decrease. Supply will increase and demand will increase. Supply will increase and demand will remain constant.
Answer:
Supply will increase and demand will increase
Explanation:
The supply and demand are connected with each other. The higher the demand, the higher the supply, and the lower the demand, the lower the supply on the market. This of course is determined by the number of consumers.
If the global population continues to grow, that means that there will be more and more consumers. The more consumers there are, the more goods will be demanded by them on the market. Since the demand will be on the rise, the producers will produce more in order to satisfy the demand, thus the supply will be on the rise.
Basically, larger population means more consumers, which in turn will result in an increase in demand, and an increase in demand will result in an increase in the supply.
distance east or west of the prime meridian is measured in degrees of?
Answer:
Longitude measure the distance east to west of the prime meridian that runs through greenwich england. Degrees are denoted by the greek word lamba.
Explanation:
Longitude gives us an angular measurement from 0 to 180 degrees. Subdivided into 60 minutes and 60 seconds. As longitude is singular at the poles. Earth's tectonic plates move relative to one another in different directions at the speed of 50 to 100mm per year so the movement sin tectonic plates influence the latitudinal rotation which changes from year to year. These vertical lines define the places on the earth with their approximate sea level surfaces. The longitudinal belt is the equator at the zero degrees largest longitude on earth.Question 10(Multiple Choice Worth 1 points) Which trophic level is most likely to contain the largest population of organisms within an ecosystem? First trophic level Second trophic level Third trophic level Fourth trophic level Fifth trophic level
Answer:
First trophic level
Explanation:
The energy distribution among the trophic levels varies greatly. In general, we can say that the lower the trophic level is, the more energy it has, and the higher the trophic level is, the less energy it has.
This same principle goes for the population size in the trophic levels as well. The lower the trophic level is, the higher the population is, the higher the trophic level, the lower the population is.
These two things are connected. The populations in the lower trophic levels are higher because there is much more energy, while the populations in the higher trophic levels have lower populations because the energy available is much smaller.
The first trophic level has the highest populations by far, and the reason behind it is that the organisms of this trophic level are actually able to produce their own food, thus energy.
The first trophic level, consisting of producers, contains the largest population of organisms in an ecosystem due to direct energy from photosynthesis and the energy loss at higher levels.
First trophic level: Contains producers that convert solar energy into chemical energy via photosynthesis. They support all other trophic levels.Second trophic level: Consists of primary consumers (herbivores) that eat producers.Third trophic level: Made up of secondary consumers (carnivores) that eat primary consumers.Fourth trophic level: Includes tertiary consumers (higher-level carnivores) that eat secondary consumers.Fifth trophic level: Contains quaternary consumers, although such levels are rare in nature.Generally, fewer organisms occupy higher trophic levels due to the decrease in available energy. Each trophic level loses approximately 90% of the energy from the previous level, so fewer organisms can be sustained. This is why producers at the first trophic level have the largest populations.
The population growth rate is a metric of how quickly a population increases in size. It is dependent upon the population's death and birth rates Human population growth rates fluctuate over time. For example, after the Industrial Revolution in the 18th century in Europe and North America, the human population growth rate soared because better health care and nutrition led to lower mortality rates. In the past few decades, human population growth has significantly decreased in some areas of the world. Despite a trend of lower birth rates in many regions during the past century, the global human population, which scientists estimated to be 7.5 billion in 2017, is increasing at a growth rate of just over 1%. the projected global human population in If Earth's population continues to grow at the current rate of 1.13%, what the year 2100? 25 billion 11 billion more than 30 billion 8-9 billion
Answer:
11 billion
Explanation:
The global population is constantly on the rise. There are significant demographic differences around the world, and i general they can be taken regionally.
Europe, the Americas, and East Asia tend to have low birthrates and low mortality rates. This leads to aging populations, and gradually the populations will start to stagnate and even decrease. On the other side, Africa, South Asia, Southeast Asia, the Middle East, are regions that have very high birthrates, and even though the mortality rates are much higher than the previously mentioned regions, they still manage to have big increase in their population. In a way, this disproportion is actually balancing the global population, so its rise is not as dramatic as in the past. It is expected that the population will continue to rise, but that the rise will constantly go down. The estimates are that by the year of 2100, the world will have a population of just above 11 billion people, 11.2 billion to be more precise.Answer:
I think the answer is, 11 billion
Explanation:
Hope it helps!
The First Civilizations
Instructions:
1. Locate the following towns, areas, seas and rivers on a world map. (15 points) Submit your map in class to deliver with the respective identified places.
* Egypt * Nile River * Mesopotamia * Tigris River * Palestine * Euphrates River * Phenicia * Jordan River
* Mediterranean Sea * Red Sea * Sinai Peninsula * Athens * Yellow River, China
* Asia Minor * Arabian Peninsula
2. Why did the ancient civilizations settle near the rivers?
Answer:
Map is given below.
Explanation:
Egypt is a country that is located between northeastern Africa and the middle east, located near the Nile River. Mesopotamia is situated in western Asia and the Tigris–Euphrates river system. Jordan River is 250 km long passes through the Middle East that flows roughly from the north to south through the Galilee and Dead Sea. Reason for the settlement of ancient civilization around the river valleys is due to these fertile lands helped the civilizations to grow in large numbers and also provided the mineral-rich soil for the domestication of plants and cattle from where the phase of agriculture began. Also, the fertile rivers were considered as the breeding ground for the fish populations and hence provided immediate food for the civilizations.If all the energy from a 103 W light bulb is emitted at 590.0 nm, what is the energy of each photon in Joule? Planck’s constant is 6.6 x 10-34 J*s and the speed of light is 3.0 x 108 m/s.
Answer:
Energy of each photon is given by [tex]0.0335\times 10^{-17}j[/tex]
Explanation:
We have given wavelength of light [tex]\lambda =590nm=590\times 10^{-9}m[/tex]
Speed of light [tex]c=3\times 10^8m/sec[/tex]
Plank's constant [tex]h=6.6\times 10^{-34}j-s[/tex]
We know that energy of photon is given by [tex]E=h\nu =\frac{hc}{\lambda }[/tex]
So energy is given by
[tex]E=h\nu =\frac{hc}{\lambda }=\frac{6.6\times 10^{-34}\times 3\times 10^8}{590\times 10^{-9}}=0.0335\times 10^{-17}j[/tex]
What minerals are the most common in sediments and sedimentary
rocks? Give multiple reasons why they are most common.
Answer:
Sedimentary rocks are the rocks that are formed as a result of compaction and lithification of sediments. These are directly obtained from the sediments of the pre-existing rock. These sediments after weathering of the rocks are transported from one place to another with the help of agents such as wind, water, and ice. These sediments are then deposited at a different place. Then, it finally turns into sedimentary rocks. For example, Shale, Sandstone and Limestone.
The common minerals that are found to be present in the sedimentary rocks are feldspar, clay minerals, and mica. The sediments such as quartz and clay minerals are derived by chemical weathering of rocks that act as a cementing material holding the sediments together. These sedimentary rock-forming minerals are abundant on the earth's surface and are comparatively much stable. So, with time, they undergo compaction and solidification and forms sedimentary rocks.
1. The sun is at an altitude of 30° to the horizontal. What is the corresponding air mass?
Answer:
Maritime tropical and continental tropical as they develop over the lower latitudes.
Explanation:
When the sun rays lie on in the place of 30-degree latitude in both the hemisphere the air mass acquires the characteristics of both maritime and continental. As the continental air masses are dry in nature and hence cover mostly the continental parts of the country as compared to the wet maritime air masses. These continental air masses are hot and humid nature and travel polewards. Normally monsoonal air masses reside over the ocean is and thus are cools and thus form what is called the trade winds. Other known popular places that produce these air masses are the Arabian peninsula and western landmasses. Sometimes their modification leads to the front formation and cyclone formations.Which one is the coldest layer in the atmosphere?
Question 56 options:
Troposphere
Mesosphere
Thermosphere
Stratosphere
The correct answer is B. Mesosphere.
Explanation
The mesosphere is the third layer of the Earth's atmosphere, located above the stratosphere and below the thermosphere. Some of its main features are its thickness of 35 km, its temperature, because the mesosphere becomes colder as the distance from the Earth increases, that is, as the altitude increases. In warmer points, its temperature can reach -5 degrees Celsius, but at other altitudes the temperature can drop to -140 degrees Celsius, so it is considered the coldest of all layers.
On the other hand, the mesosphere is a protective layer for the planet, since it destroys most meteors and asteroids before they can reach the Earth's surface. So, the correct answer is B. Mesosphere.
Question 12 (1 point) Over the course of the year, the Sun's declination ... A) decreases B) increases and decreases C) increases D) stays the same
Answer:
B) increases and decreases
Explanation:
Sun's declination is the angular distance from north to south of the celestial equator. The delineations of the sun change from 23.5 degrees North to 23.5 degrees South and back again during a year. As the seasons change the time the sun stays at the earth atmosphere also changes from day to night like at the time of Solstice in winter and summer. The dates of these solstices change from time to time according to the rotation of the earth. As te places on the earth latitude have delineated over the period that has caused the coordinates to change continuously. There is an increase and then decrease of this definition from east to west in some latitudes and west to est in others related to the north and south pole alignments of the earth.The Sun's declination changes throughout the year, it increases and decreases due to the tilt of the Earth's axis and its orbit around the Sun, affecting seasons and daylight length.
Explanation:The question refers to the pattern of changes in the Sun's declination throughout the year. The Sun's declination, which is the angle between the rays of the sun and the plane of the Earth's equator, increases and decreases over the course of a year. This is due to the tilt of the Earth's axis and its orbit around the Sun, causing the Sun to appear higher in the sky during summer and lower during winter in any hemisphere. This variation is what leads to the changing seasons and the difference in the length of daylight throughout the year.
Question 2 2 pts The _is a natural process that warms the Earth's surface and is the primary reason for global warming. Ocean acidification O Photosynthesis None of the options Greenhouse effect
Answer:
Greenhouse effect
Explanation:
Greenhouse effect -
The process by which the temperature of a planet increases above the normal temperature range .
In increase in the concentration of the green house gases are responsible for the green house effect .
The natural process of the greenhouse effect is crucial for the survival of living beings on the planet Earth , as without green house effect , the planet will freeze and will not support living organisms like Human beings , animal and plants .
But due to an increase in the green house effect , the temperature of the planet will increase more than the normal range and will lead to Global warming .
Question 5 (1 point) For an observer located on the equator, the altitude of the stars due West will... O A) increase OB) stay the same OC) increase and decrease OD) decrease
Answer:
B) stay the same
Explanation:
The stars set to rise and fall daily from the sphere of the equator and instead viewed from the poles. In the northern hemisphere, the stars go the full circle. Around the north celestial poles precisely once a day. At 0 degree the star named Polaris is seen and will the same when viewed from all angles. Thus there appears to be more stars at the equator and hence, stars move parallel to the celestial equator.Answer: Stay the Same
Explanation: I got it right
The Hardy-Weinberg law describes the characteristics of a genetic population under ideal circumstances. This principle states that gene frequencies in a population, under ideal conditions, would:
a. remain stable over time
b. display directional selection
c. develop zygomatic plasticity
Answer:
a. remain stable over time
Explanation:
Hardy-Weinberg law -
It states that , if there is no evolutionary influence like the mate choice , population bottleneck , sexual mutation , etc and the conditions are ideal in a population , then the gene and allele frequencies in that particular population remain constant from generation to generation .
Hence , from the options given in the question , the correct answer is ( a ) remain stable over time .
radio station broadcast at 85 megahertz what is the energy of each proton joule use 6.6times 10 to the negative 34 for the Planck constant
Answer:
Energy of each proton will be [tex]5.61\times 10^{-26}J[/tex]
Explanation:
We have given frequency [tex]\nu =85MHz=85\times 10^6Hz[/tex]
Plank's constant [tex]h=6.6\times 10^{-34}J-sec[/tex]
We have to find the energy of proton
We know that energy is given by [tex]E=h\nu[/tex], here h is plank's constant and [tex]\nu[/tex] is frequency
So energy [tex]E=6.6\times 10^{-34}\times 85\times 10^6=5.61\times 10^{-26}J[/tex]
So energy of each proton will be [tex]5.61\times 10^{-26}J[/tex]
Question 11 (1 point) Which of the following planets exhibit the characteristic "back and forth" motion relative to the stars? O A) Mars OB) Jupiter OC) Saturn OD) All of the above
Answer:
D) All of the above
Explanation:
The back and forth motion mentioned over here refers to the retrograde motion of the planets. Basically, the Earth is going around the Sun and othe planets are also going around the Sun.
When you observe planets regularly you will find that the stars are moving back and fourth in the same star field. This occurs due to planets' own elliptical orbit and different orbital speed of Earth and the respective planets.
Answer: all of the above
Explanation: got it right on the quiz
Why do you think that Demi Lovato developed mental illness? How does she bring together multiple factors in her recovery? How do you think that a star being this open about recovery influences children?
Answer and Explanation:
Demi Lovato created psychological maladjustment due to overdose of medications or illicit drug use.
Lovato opened about their battles with dependence and psychological well-being and it has shone light on it in different constructive ways.It is something big names once in a while do.the rundown of lovato shared is since quite a while ago: depression,addiction,disordered eating and bipolar disorder.She said ," If you are relieved it can want to mortify inability to concede that you need more help.People sharing accounts of sickness that end in with a joyfully ever-afters are frequently called bold for conceding their shortcoming and experience ,and obviously they are,but as a model of goals they can be obliterating simultaneously for others when a disease reappears or relapses,and even brief sentiments of disgrace or fears of looking for further help.
define pharmacokinetics. Name the four processes in pharmacokinetics and give an explanation of each.
Answer:
Pharmacokinetics is the analysis of how the body copes with absorption, distribution, metabolism & excretion of drugs under examination.
The four process of pharmacokinetics are absorption, distribution, metabolism and elimination.
Explanation:
Pharmacokinetics is the analysis of how the body copes with absorption, distribution, metabolism & excretion of drugs under examination. The impacts and length of the drug's action are also considered.
The four process of pharmacokinetics are absorption, distribution, metabolism and elimination.
1) Absorption - Absorption is the motion of a drug into the blood from its administration site. Many drugs are absorbed through passive absorption, but certain drugs require transportation mediated by the carrier.
2) Distribution - Distribution is the body wide motion of drugs
3) Metabolism - It is the method of transforming a drug throughout the body and make it much more hydrophilic in order for the kidneys to secrete it from the body.
4) Elimination - Excretion is the elimination from the body of the substance. Several drugs are either excreted unchanged or emit as urine or some other form.
Answer:
Answered
Explanation:
Pharmacokinetics is the branch of pharmacy which deals with the action of the body on the drug once it is administered in the body.
There are four process are followed when a drug is administered inside a body. These are absorption, distribution, metabolism and elimination or excretion.
Absorption is the movement of drug from its site of administration into the blood. Most drugs are absorbed by passive absorption but drugs need carrier mediated transport.
Distribution is the movement of drug through out body. Determined by the blood flow into tissues and cells.
Metabolism is the transformation of blood within the body to make it more hydrophilic so that it can be easily excreted out of the system.
Excretion is the removal of substances from the body. Some drugs are either excreted out unchanged and some are excreted out as metabolites.
hich category of material properties does polarization fall under?
Magnetic
Optical
Electrical
Mechanical
Thermal
Answer:
optical
Explanation:
Polarization fall under optical property of material.
Polarization is a property of certain electromagnetic waves in which the direction and the magnitude of electric field are related in some way. Plane polarized light consist of waves in which direction of vibration of waves is same for all waves. Light may be polarized by reflection or by passing it through filters.
At rst hydrogen has a spectral line at 165 nm. If the line is observed at 170 nm for the star Proxima, how fast is Proxima moving in km/s
Answer:
9090.90 Km/s
Explanation:
Given:
hydrogen has a spectral line at = 165 nm
Line is observed at = 170 nm
Now, from the Hubble's law
[tex]v=\frac{\Delta\lambda}{\lambda}\times\ C[/tex]
Where,
v is the velocity
Δλ = Change in wavelength = 170 - 165 = 5 nm
λ = Actual wavelength
C is the speed of the light
on substituting the respective values, we get
[tex]v=\frac{5}{165}\times3times10^8[/tex]
or
v = 90.90909 × 10⁵ m/s
or
v = 9090.90 Km/s
Q6 Is the effect of aerosols stronger or weaker than the effect of GHGs?
Stronger
Weaker
Answer:
weaker
Explanation:
Aerosol -
It is the suspension of the solid or liquid particles in the air , is known as the aerosol .
The effect of aerosol is , that it reduces the amount of the solar radiations incident on the surface of the Earth , and due to this capacity to reflect the solar radiations , it has a negative impact on the Earth .
Hence ,
The effect of aerosol is weaker than the GHG's .
Answer:
Weaker.
Explanation:
An aerosol is a fine suspension of solid or liquid droplets in air or any other gas. They can be natural or man-made. Examples include dust, fog, streams, etc. The size of particles has a major impact on their properties and diameter. Typically smaller than one micron. As compared to the impact of greenhouse gases these particles don't harm the natural environment in much extend as the GHGs have done so in the geologic period of the earth. GHGs concentration can form sooty particles and spread to larger distance the methane gas once react with the ozone can destroy it and cause hazardous problems, Impact of carbon monoxide and dioxide on the planet is seen as the impact of coal and industrial wastes.What does the Human Development Index measure? inequality of income disparity of property ownership O degree of environmental damage total resource use degree of progress
Answer:
degree of progress
Explanation:
Human Development Index , it is the statistic composite index of life expectancy , per capita income and education , which helps to rank the countries into 4 categories .
The example is as follows -
work , education , sheltered , voting , well fed , doings etc .
Thus, human development index is a measure of progress in key dimensions of human development .
Why are felsic lava flows so much more viscous than mafic ones?
Answer:
Magma are the hot molten materials that rises up towards the surface due to the increasing force from the depth. These magma when comes out to the surface then they are considered as lava.
The felsic lava are those in which the amount of silica and aluminium is very high. Due to this high silica content, the viscosity is high. The amount of silica present in magma or lava is directly proportional to the viscosity of magma or lava. The felsic lava due to its high viscosity flows sluggishly.
Whereas, the basic lava are those in which the silica content is significantly less. Iron (Fe) and Magnesium (Mg) is mostly present in this type of lava. As a result of which it flows easily without any difficulty.
This is the reason why felsic magma (lava) are more viscous compared to the mafic magma (lava).
Felsic lava flows are more viscous due to their higher silica content, which increases the magma's resistance to flow. This higher viscosity can lead to explosive eruptions as gases become trapped within the magma. Mafic lavas, in contrast, with lower silica content have lower viscosity, which results in smoother flows and gentler, effusive eruptions.
Explanation:Felsic lava flows are more viscous than mafic ones primarily due to the higher silica content in felsic magmas. Viscosity is a critical factor that determines how magma behaves and is also influenced by temperature, the volume of dissolved gases, and the specific minerals present within the magma. Felsic magmas, often associated with minerals like quartz and orthoclase feldspar, are higher in silica and this increased silica content leads to an increase in the magma's resistance to flow, which is described as a higher viscosity. Mafic magmas, consisting of minerals like olivine and pyroxene, are lower in silica and have a lower viscosity, which allows them to flow more smoothly to the surface.
The viscous nature of felsic lavas causes them to flow less easily, which can result in the buildup of pressure in a magma chamber as gases become trapped. This contributes to the potential for more explosive volcanic eruptions when felsic magma does reach the surface. On the other hand, the low-viscosity mafic lavas are associated with gentler, effusive eruptions, which allow for the fluid lava to spread across the surface forming various types of lava flows such as pahoehoe and aa.
Explain how political, economic, and religious forces can affect the diffusion of language.
Answer by using a minimum of 125 words.
Answer:
Explained as below
Explanation:
The political, economic, religious and other forces affect the diffusion of languages in any region as its due to the political features of the territory that the boundaries of one country that touch that of the another and this shows its location in relation to the other countries in the world. Ex of political boundaries. Economically any country on earth has its economy and which may or may not be dependent on the resource of the other nations is in direct relation to the interaction of one nation's language with those of the others. The lifestyles and ways of interactions have indirect communications on the languages in the country. Ex of trade flows. Social or religious factors have a direct bearing upon the linguistic diversity of the region as the so-called world is divided itself into 6 main religions like Christian, Muslims, Hindus, Buddhist, Jain, and jews and there are certain subclasses found within them thus, repeated Interaction of these elements leads to diffusion.1)What is the theory of plate tectonics? 2)What is the evidence for the plate tectonics theory? 3)There are seven major crustal plates (name and briefly describe) that make up the earth’s surface. Do they include just continents? 4)What are the major driving forces for earth’s plate motion? 5)Plate tectonics is described as a unifying theory. What major geologic features are explained? 6)Describe the "scientific method". (How do the terms "hypothesis", "theory" and "law" relate to each other?)
1. The theory of plate tectonics is the theory that suggests that there are tectonic plates and they are moving on surface of our planet.
According to this theory, the forces from the mantle layer create a very big pressure on the crust, and they managed to crack it in numerous pieces. It doesn't stop there though, as those same forces actually are moving the tectonic plates in certain direction. This results in different types of interaction between the plates, as they can move away from each other, slide past each other, or collide with each other.
This is what gives the basis of the formation of the majority of the physical features on the surface on our planet, but it can also influence on destroying physical features.
2. There are several evidence that point to the plate tectonics theory and that it is in fact a real process that is happening on our planet constantly.
The puzzle like matching of certain parts of the continents, especially the eastern coast of South America and the Western coast of Africa, is one evidence, as they look like they have been together but then broken apart.
The mid-ocean ridges provide evidence about the formation of new crust. They also show how the crust is pushed sideways, in the manner that the youngest crust is at the mid-ocean ridge itself, while the bigger the distance from it, the older the crust is.
The fossil records are another evidence. There are lot of fossils of the same species that have been found in continents that are not connected in the present. This is simply not possible, as even if the same species is put in another location, it will gradually evolve new characteristics because of the environment. This has been the case with fossils of the same species being found on Antarctica, South America, and Africa, pointing that once these three continents were part of one larger land mass.
3. There are seven major tectonic plates on Earth, but also several smaller ones. Most of the major plates are continental: African, Eurasian, North American, South American, Indo-Australian, and Antarctic plates. Only one of the major plates is actually oceanic, and that is the Pacific plate.
Not to be mistaken though, big portions of the continental tectonic plates are actually under water, as they are not all above it and creating enormous land mass, just that the crust doesn't have the oceanic plate composition.
The Eurasian plate is the largest of the continental plates, stretching from the eastern side of Iceland to the eastern part of Siberia.
The North American plate is stretching from the western side of Iceland to the eastern part of Siberia.
The African plate is actually in a process of divergence, as it splits into two separate plates gradually, the Somali and Nubian plates.
The Indo-Australian plate has been formed by the merging of the Indian and Australian plates, though India is part of Asia and it seems the other way.
The South American plate is gradually moving toward west an it will most probably isolate itself from North America, while the Antarctic plate is moving toward the lower latitudes, so in millions of years in the future it will probably not be frozen anymore. T
he Pacific plate is by far the largest of any other oceanic plate, but it is decreasing in size from all sides, as it subducts below continental plates on all sides.
4. The tectonic plates need to experience enormous amount of force upon them in order to be able to move. This enormous amount of force comes from below them, from the mantle layer. These forces are known as convection currents.
The convection currents are circular movements of material in the mantle layer, between its upper and lower parts. This happens because of the difference in density and temperature between the material in its upper and lower part.
The material that is in the upper part is cooler and it has bigger density, while the material in the lower part has higher temperature and lower density. The material from the upper part sinks gradually toward the bottom as it is heavier, while the material from the bottom moves upward as it is lighter. Once the material from the top that came to the bottom becomes hotter and less dense, it moves in the opposite direction, thus upward, and the process constantly continues. The movement upwards creates enormous pressure on the crust, resulting in cracking it, as well as moving slowly on the surface of our planet.
1. What happens in a ocean-continental collision?
a. montains form
b. continental plate subducts
c. new crust is formed
d. oceanic plate subducts
Answer:
A. Mountain forms
Explanation:
Its due to the continental plate is lighter than the oceanic plate the pale get subducted due to the slab push and slab pull effects. The continental plate further reaching the depth burns due to the pressure and intense temperature also this causing the melting of the rocks and leading to the formation of volcanoes and mountain chains of all sizes. Mountain forms and is composed of lava and basaltic matter from below. The collision of the plate leads to the formation of faults along the boundaries this led to the formation of the many large mountains on earth. The Himalayas are thereby known as the young fold mountains.Question 14(Multiple Choice Worth 3 points) Crust is recycled at hot spots. O mid-ocean ridges. trenches. rifts. transform faults.
Answer:
trenches
Explanation:
Crust recycling is the earth process by which surface matter from the land sphere is recycled into the mantle by the process of subduction or delamination. The crustal signs in mantle-derived rocks are thus a proof of the recycling. Most of this process happens through the mid-oceanic ridges. The development of whole mantle convection components and layered by mantle convection proponents. Evidence is suggested through the Seismic tomography and Stable isotopes that help in understanding the different layers on the earth and keeps track of the movements within the earth's crust. Dome group of researchers can find out that 5 to 10 % of the upper mantle is composed of recycled crustal matter.Question 7(Multiple Choice Worth 3 points) Minerals form during I. crystallization in magma. II. deposition from solution III. lithification in rocks I only Il only I and Il only I, II, and lIl
Answer:
I and Il only, crystallization in magma and dissolved in water.
Explanation:
Most of the minerals are formed due to the crystallization of lava or molten matter in due course of time when it slowly cools in contact with the land surface as in rapid cooling there is no time for the formation of crystals. Minerals are then formed from the evaporated of the solution a mix of substances dissolved in another. For example deposits of table salts. If the magma erupts to the surface and becomes a lava it tends to cool quickly and small crystals are formed. Depending upon the number of gases and chemical composition of lava.Wind power has a cubic dependency on wind speed. How much power will a wind-powered turbine generate for a wind speed of 8 m/s, if it generates 100 kW when the wind speed is 2m/s ?
Answer:
Power generated by wind turbine at 8 m/sec will be 6400 KW
Explanation:
We have given at 2 m/sec power generated by turbine = 100 KW
We know that foe a wind turbine power [tex]P\propto\ v^3[/tex] here P is power and v is velocity of wind
So [tex]P=kv^3[/tex], here k is constant
So [tex]100\times 1000=k\times 2^3[/tex]
k = 12500
Now we have to calculate power at 8 m/sec
So power [tex]P=kv^3=12500\times 8^3=6400\times 10^3W=6400KW[/tex]
So power generated by wind turbine at 8 m/sec will be 6400 KW