Final answer:
To solve physics problems involving distance, speed, and time, ensure that the equation used yields an answer with the correct units through dimensional analysis. Following the appropriate steps, substitute the known values with units into the equation to solve for the unknown, and check that the units in the final answer make sense.
Explanation:
In physics problems, the units of your answer are as important as the numerical values. When determining which equation to use for solving a problem involving distance, time, and speed, you must ensure the equation yields an answer with the correct units. This is known as dimensional analysis. For example, speed is typically measured in units such as meters per second (m/s), which is a rate of distance covered over a period of time.
The basic formula for speed is:
Speed = Distance / TimeIf you are calculating distance, you would rearrange the formula to:
Distance = Speed x TimeSimilarly, if you need to calculate time, the formula would be:
Time = Distance / SpeedTo solve a problem, follow these steps:
Identify what needs to be determined (the unknowns).Select the appropriate equation that relates to the unknowns and the knowns.Substitute the known values and their units into the equation to solve for the unknown.Always include units in your answer to ensure it makes sense.For instance, if a person is running at a speed of 10 m/s and you want to know how long it will take them to cover 25 meters, you would set up the equation:
Time = Distance / Speed = 25 m / 10 m/s = 2.5 secondsThe answer includes units (seconds) and is reasonable given the context of the problem.
The island of Hawaii is the youngest, and the islands get progressively older to the northwest. Plate tectonic theory explains this as Choose one: A. microplates breaking loose from the Pacific Plate as it moves, leaving this chain of islands in its wake. B. a hot spot currently sitting under Hawaii and the Pacific Plate moving across it in a northwesterly direction. C. the rifting of the Pacific Plate, starting at the northwest end of the chain and extending southeast to Hawaii. D. a hot spot moving under the Pacific Plate toward the southeast.
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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The Coriolis Force is often called an "apparent force", or "effect", because its influence on air movement is insignificant in comparison to other forces acting on the air.a. Trueb. False
Answer:
False
Explanation:
The Coriolis force is caused because the Earth rotates at a different linear velocity in the Equator compared to that in the North and South poles. This force makes objects that are not fixed to the ground move in different directions. For example, the hurricanes in the Northern Hemisphere spin counterclockwise and when travelling some distance they move to the right. While in the Southern Hemisphere they spin clockwise and move to the left. The effect of the Corioli force is extremely important on Earth because it determines the water and air currents, for example. Therefore, it is not an insignificant force.
Thought, it is an apparent force because it is not a force directly applied to the air and water, but a force produced by the side effect of the rotation of the Earth.
Answer:
False
Explanation:
Hello!
We can observe the "Coriolis Force" in a system that experiences a rotational movement, when a body is in motion with respect to said system, which is taken as a reference parameter. The "effect" consists on a relative acceleration experienced by the body in the rotating system.
The Coriolis Force is named "apparent force" or "effect", because it is not a real force, since there is nothing to produce it. Coriolis Force is produced in the studied body because the observation system is rotating.
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a) The Mayans and Aztecs made notable advances in astronomy and mathematics. b) The Aztecs and Mayans learned to read and write under Spanish rule. c) The Aztecs and Mayans had no concept of the wheel. d) The Incas built many miles of paved roads across their empire.
Answer:
a
Explanation:
Of all the option A is most correct because
America is where so much creativity and invention came into being. Moreover, american people have achieved dominance before the majority of the world did in the subjects of Astronomy and Mathematics. There were two groups of people from prehistoric America: the Mayans and the Aztecs. they use to stay in modern mexico. Through astronomy and mathematics they made impressive strides.
Flowing-water ecosystems, especially headwater streams, receive most of their energy from: A. light. B. water. C. wind. D. organic detritus. E. minerals.
Answer:
Option (D)
Explanation:
Organic detritus usually refers to those materials that are the remains of dead organisms such as plants and animals.
The flowing water ecosystem such as the head-water streams obtains most of the materials from the nearby terrestrial and aquatic places due to the surface runoff. It is highly rich in the amount of organic detritus, as the materials such as leaves, branches, roots, soil particles, and other organic waste products are transported from the land areas, thereby obtains its energy from them.
Thus, the correct answer is option (D).
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
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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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
All of the following were results of the last Ice Age EXCEPT: A. The area from southern France to Mongolia changed to frozen tundra in winter and semiarid steppe in summer. B. The increase in the size of African rain forests encouraged a temporary return to vegetarianism. C. The deserts of the Sahara, Kalahari, and the interior of Australia expanded. D. Pyrenees mountains between modern France and Spain
Answer:
A. The area from southern France to Mongolia changed to frozen tundra in winter and semiarid steppe in summer.
Explanation:
The last glaciers period occurred at the end of the Permian period and took place about 115,000 11,700 years ago. And the appearance of the glacial and the interglacial periods and is referred to as the last ice age and the ice caps of the Sierra Nevada and Rocky mountains and the alps and the baltic peninsular and Patagonia ice sheets in the south.The correct option is D. Pyrenees mountains between modern France and Spain.
The Pyrenees mountains are a result of tectonic activity and have been in existence long before the last Ice Age. The last Ice Age, which occurred during the Pleistocene Epoch, had various effects on the Earth's geography and climate, but the formation of the Pyrenees was not one of them. Here's a brief explanation of the other options and why they are associated with the last Ice Age:
A. The area from southern France to Mongolia did indeed experience significant climatic changes during the last Ice Age. The climate shifted between frozen tundra in winter and semiarid steppe in summer due to the expansion of ice sheets and changes in global weather patterns.
B. The increase in the size of African rain forests during the Ice Age is consistent with the climatic changes that occurred. Cooler temperatures and increased precipitation in some regions would have supported the expansion of forested areas, potentially providing more vegetation for herbivores.
C. The deserts of the Sahara, Kalahari, and the interior of Australia expanded due to the drier and cooler global climate. The Ice Age led to a reduction in overall global temperatures and changes in precipitation patterns, which caused many regions to become more arid.
D. In contrast, the Pyrenees mountains were formed by the collision of the Iberian and Eurasian tectonic plates, a process that began approximately 100 million years ago during the Mesozoic Era. The last Ice Age, which occurred much later, did not cause the formation of these mountains. Instead, glaciers during the Ice Age would have shaped the existing landscape of the Pyrenees, creating features such as U-shaped valleys and cirques, but not forming the mountains themselves.
Therefore, the formation of the Pyrenees mountains is the exception among the given options, as it was not a result of the last Ice Age.
At a convergent plate boundary, A. sea floor is produced. B. high mountains may be built during continent-continent collision. C. there are very few earthquakes. D. All of the choices are correct.
Answer:
The correct answer is B - high mountains may be built during continent-continent collision.
Explanation:
A convergent plate boundary is where two or more tectonic plates collide. When this happens, subduction (one of the plates will slide under the other) occurs.
During continent-continent collision, a high mountain range is usually formed.
Isolines have all the properties EXCEPT the following:
a. They may cross each other.
b. The numerical difference between isolines are intervals.
c. They were first used on a map about 300 years ago.
d. Close isolines indicate a steep gradient.
e. They are always closed loops.
Answer:
C. They were first used on a map about 300 years ago
Explanation:
This is the only incorrect option, isoline's usage are less than 200 years old
Match/Fill each key term to the appropriate options in below.
1. You think an El Nino may be starting because you observe that ________ are increasing off the coast of Peru.
2. The _________ are holding strong throughout the arrays, suggesting no El Nino yet.
3. The ________ over the eastern part of the TAO array suggest an El Nino may be coming.
4. The extended _________ in the TRITON array is falling, suggesting the El Nino may be ending soon.
Options:
a. sea surface temperature
b. high pressure
c. easterly trade winds
d. decreasing air presssure
Answer:
1. A
2.C
3.D
4.B
Explanation:
1. A You think an El Nino may be starting because you observe that sea surface temperatures are increasing off the coast of Peru.
2.C The easterly trade winds are holding strong throughout the arrays, suggesting no El Nino yet.
3.D The decreasing air pressure over the eastern part of the TAO array suggest an El Nino may be coming.
4.B The extended high pressure in the TRITON array is beginning to reduce suggesting the El Nino may be ending soon.
When map scale is expressed as a ratio of map distance to ground distance (i.e., map distance:ground distance), there is an inverse relationship between the extent of coverage of the entire map and the amount of detail visible.True/False
Answer: True
Explanation:
The ratio of the map distance to ground distance usually involves the use of inverse relationship between the extent of coverage of the entire map and the amount of detail visible. And this relationship is always written as 1/x or 1:x.
Where the numerator represents the map distance which always equals 1 and the denominator represents the ground distance which has similar units as the numerator.
Answer:True
Explanation:
For instance, 2cmrep 1km
1km on the map is inversely related to 2cm on the ground surface. This can be express as as statement scale in geography. Other types of scales are linear scale and representative fraction
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.
Which country has four official languages: Spanish, Quechua, Aymara, and Guarani? View Available Hint(s) Which country has four official languages: Spanish, Quechua, Aymara, and Guarani? Bolivia Costa Rica Ecuador Argentina Paraguay Previous Answers Correct As described in a note at the bottom of the map legend, Bolivia has four official languages (Spanish, Quechua, Aymara, and Guarani).
Answer:
Bolivia
Explanation:
Bolivia is a central South American country and its administrative capital is La Paz. La Paz is located on the Andes Altiplano plateau. Bolivia was named after the fighter Simon Bolivar. It broke away from the Spanish rule in 1825.
Spanish is the official language of Bolivia but there are 36 indigenous languages spoken and used by peoples in different regions of Bolivia. Quechua, Guarani and Aymara are the most spoken indigenous languages.
Bolivia is the country with four official languages: Spanish, Quechua, Aymara, and Guarani, reflecting its deep cultural and linguistic diversity.
Explanation:The question involves identifying a country with four official languages: Spanish, Quechua, Aymara, and Guarani. The correct answer is Bolivia, a country within the core of the Rural Amerindian Region of South America, alongside Ecuador and Peru. Bolivia is known for its linguistic diversity, with Spanish serving as the colonial language, yet indigenous languages such as Quechua, Aymara, and Guarani are widely spoken, especially in rural and remote areas. Indigenous languages across Latin America, including those in Bolivia, face challenges in terms of their preservation and inter-generational transmission despite their critical role in maintaining cultural identities.
An isotherm on a map:____________ a) identifies all places that have the same annual mean temperature. b) represents the warmest place on the map. c) represents the coldest place on the map. d) connects points of equal temperature.
Answer: d) connects points of equal temperature.
Explanation: An isotherm is a line drawn on a map or chart of the earth's surface to indicate and connect points having the same temperature at a given time. Isotherm are used in meteorology to highlight the distribution earth surface temperature.
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.
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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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
Two 6.9 magnitude earthquakes occurred approximately 6 months apart in 1988 and 1989. The death toll in the Armenian earthquake was 25,000 people, while the death toll in the Loma Prieta quake was 62 people. What factor was most responsible for the difference in the death toll?
Answer:
hi!
Explanation:
A comparison between two very similar earthquakes supports this claim. Both occurred in densely populated regions, but had very different results. In 1988, the Spitak magnitude 6.9 earthquake in Armenia claimed more than 25,000 lives. On the contrary, the magnitude 7.1 earthquake Loma Prieta in California in 1989 caused only 63 deaths. "The difference in the number of deaths illustrates the enormous effect that high construction standards can have to save people's lives."
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.
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.
Vanessa and Henrietta lost their licenses for independent space travel when the government learned of their plan to build a waterpark on the moon.
Answer:
False
Explanation:
They didn't loose their license because of that.
Space exploration has a rich and complex history that involves overcoming numerous challenges. The question involves a whimsical and impractical plan to construct a waterpark on the moon, contrasting with the realities of space exploration as demonstrated by historical events and figures.
Explanation:The subject of this question relates to the concept of independent space travel, governmental control of such activities, and, indirectly, space exploration history. Considering Vanessa and Henrietta and their fictional plan to build a waterpark on the moon, it is important to note that the reality of space travel and exploration is far from their whimsical idea. In fact, historical figures such as Van Allen, a leading supporter of space science, have advocated for more pragmatic uses for space exploration, such as utilizing robotic spacecraft for exploration.
Space agencies, like NASA and the European Space Agency, have had to overcome myriad challenges to accomplish their missions. The last human left the moon in 1972 due to both political and economic pressures, not because there was a lack of desire to explore. If Vanessa and Henrietta had focused their energies on contributing to the scientific community instead of building a lunar waterpark, perhaps their licenses for independent space travel would not have been revoked by the government.
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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
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.
We observe a glowing cloud of gas in space with a spectroscope. We note that many of the familiar lines of hydrogen that we know on Earth seem to be in a different place. They are shifted toward the blue or violet end of the spectrum compared to their positions in the spectrum of glowing hydrogen gas on Earth.
From this we can conclude that:
A. the cloud is much hotter than hydrogen on Earth.
B. the cloud is moving away from us.
C . the cloud is moving toward us.
D. the cloud is much cooler than hydrogen on Earth.
The gas cloud is moving away from us based on the redshift of the light. Using the Doppler shift formula, we can calculate the speed of the gas cloud.
Solution
Because the light is shifted to a longer wavelength (redshifted), we know this gas cloud is moving away from us. The speed can be calculated using the Doppler shift formula:
speed = (observed wavelength - rest wavelength) / rest wavelength * speed of light
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.
Which regions have the most clearly defined boundaries? A. Peripheral. B. Functional. C. Vernacular. D. Formal.
D. Formal regions have the most clearly defined boundaries. They are areas recognized by the government and other organizations and have clear-cut boundaries. Other types of regions such as peripheral, vernacular, and functional regions don't have as clear-cut boundaries.
Explanation:The region with the most clearly defined boundaries are formal regions. A formal region, such as a country, state, or city, is an area that is defined by official boundaries and is recognized by government and other organizations. These regions have clear-cut boundaries established by the government, for example, a state's borders in the United States, or the geographical borders of a country.
On the other hand, Peripheral and vernacular regions are more subjective and their boundaries can change depending on personal perspectives and interpretations. A functional region, such as a school district or a business service area, is defined by a particular set of activities or interactions that occur within it. But their boundaries are not as clear-cut as a formal region's boundaries because they can change based on the activity or interaction that is being focused on.
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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.
what is right about X-ray Telescopes:X-ray telescopes are located in orbit around the Earth because: X-ray telescopes are located in orbit around the Earth because: X-ray telescopes are cheap and easy to launch into space. there are too many X-ray telescopes on Earth, so now they are put in space. the X-rays that come out of the telescopes are dangerous to humans. X-rays don't reach the surface of Earth. X-ray telescopes on Earth would have to be too big.
Answer:
X-rays don't reach the surface of Earth
Explanation:
Due to the atmospheric absorption, the X-ray telescopes must be placed in the orbit to a higher altitude of 86,500 miles and as to detect the penetrating X rays that are used to study the soft radiation and to get a clear view of the universe.Final answer:
X-ray telescopes are in orbit around Earth because our atmosphere absorbs X-rays before they can reach the ground. They provide clear, uninterrupted views of the cosmos in X-ray light, invaluable for studying high-energy astronomical phenomena.
Explanation:
X-ray telescopes are located in orbit around the Earth primarily because X-rays don't reach the surface of Earth. Earth's atmosphere is opaque to high-energy radiation like X-rays, meaning it absorbs these rays before they can reach ground-based telescopes. Thus, to capture images and conduct observations of the cosmos in the X-ray part of the electromagnetic spectrum, telescopes must be placed in space, beyond the distorting effects of our atmosphere. This allows astronomers to make direct observations of objects emitting X-ray radiation without interference.
Space-based X-ray telescopes, such as the Chandra X-ray Observatory, offer significant technical advantages over ground-based observatories. Notably, they avoid the atmospheric absorption and distortion that limits the quality of observations from Earth. Moreover, space telescopes can operate continuously without the interruptions caused by the Earth's day-night cycle and changing weather conditions.
However, it is important to note that launching and maintaining orbits for X-ray telescopes is an expensive endeavor, and not because they are cheap or easy to launch. Repairs also present a major challenge in space. Despite these challenges, the unique data obtained from X-ray telescopes makes them invaluable tools for astrophysics research, helping us to understand phenomena such as black holes, neutron stars, and supernovae.
"The ocean and continental crust that we see is actually submerged. Approximately, how much of the crust is typically submerged (deeply rooted)?"
Answer:
Continental crust is about 20 to 70 km thick and thus 70% of this submerged and oceanic crust being about 10 km thick is only 30 % submerged.
Explanation:
As the hydrological crust is considered to be much denser than the oceanic crust hence at the subduction zones the crusts sink into the mantel and are beneath the lighter continental crust as the oceanic crust is much older than the continental crust. As the continental crust forms many layers and has a bulk composition and the average density is about 2.83 g/cm and has a thickness of about 7 to 10 km.