examine this map of the continent of africa. At which latitudes
is the atmostphere rising? at which latitudes is it sinking? how
does this atmostpheric circulation influence the contient's
climates
Answers
The atmosphere is rising at the equator and sinking at the subtropical latitudes.
The atmospheric circulation pattern influencing the continent's climate is known as the Hadley Cell. At the equator, solar radiation is strongest, causing air to heat up and rise, creating a low-pressure zone. This ascending air forms a band of atmospheric rising motion known as the Intertropical Convergence Zone (ITCZ). As the air rises, it cools and releases moisture, leading to frequent rainfall and lush tropical climates in equatorial regions.
At higher latitudes near 30 degrees north and south, the air that rose at the equator starts to descend. This sinking motion creates high-pressure zones known as subtropical highs, such as the Sahara High in Africa. As the air descends, it becomes warmer, leading to drier and more arid conditions in the subtropical regions.
The combination of rising air at the equator and sinking air at the subtropics sets up a global atmospheric circulation pattern that influences Africa's climates.
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Related Questions
what are the types of data layer
Answers
Answer:
Explanation:
Relational Database Management Systems (RDBMS): This type of data layer involves storing data in a structured manner using tables, rows, and columns. RDBMS systems like MySQL, Oracle, or PostgreSQL are commonly used to manage and query data.Object-Relational Mapping (ORM): An ORM is a technique that allows developers to interact with a relational database using object-oriented programming. It maps database tables to objects in code, providing an abstraction layer and simplifying database interactions.NoSQL Databases: NoSQL databases, such as MongoDB, Cassandra, or Redis, provide alternative data storage models that differ from the traditional relational database approach. They are designed for handling large volumes of unstructured or semi-structured data, offering high scalability and performance.Data Access Layers: This type of data layer involves the implementation of an intermediary layer between the application code and the actual data storage. It handles tasks like data retrieval, manipulation, and persistence, providing an abstraction for data access.Data Services: Data services offer a layer of abstraction that allows applications to access data through standardized interfaces or APIs. They may involve technologies like web services or RESTful APIs, enabling clients to interact with data regardless of the underlying data storage or technology.1.This type of metamorphism occurs adjacent to igneous intrusive bodies:
2 .The parent rock of marble is
3.The parent rock of slate and phyllite is
4.This green colored mica is an index mineral for low grade metamorphism:
Answers
The type of metamorphism that occurs adjacent to igneous intrusive bodies is contact metamorphism.
How to explain the informationThe parent rock of marble is limestone. Marble forms through the metamorphism of limestone, which is primarily composed of the mineral calcite. Under high temperature and pressure conditions, the calcite recrystallizes and forms the interlocking grains of marble.
The parent rock of slate and phyllite is shale. Slate and phyllite are both derived from the metamorphism of shale, which is a fine-grained sedimentary rock composed of clay minerals.
The green-colored mica that is an index mineral for low-grade metamorphism is chlorite. Chlorite is a common mineral in low-grade metamorphic rocks such as greenschist.
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Question 50
Mexico City is the most populous city in North America
True
False
Answers
It is true that Mexico City is the most populous city in North America. It is one of the world's alpha cities, lying at an altitude of 2,240 metres.
Mexico metropolis is the country's capital and largest metropolis, as well as the most populous in North America. It is one of the world's alpha cities, lying at an altitude of 2,240 metres (7,350 feet) in the Valley of Mexico on the high Mexican central plateau. The city is organised into 16 boroughs or territorial demarcaciones, which are further subdivided into neighbourhoods or colonias.
The city proper has a population of 9,209,944 in 2020, with a land area of 1,495 square kilometres (577 square miles).
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Which one of the following statements is true?
Fire can be good for the maintenance of forests.
Edaphic factor has no influences on fauna.
Some stable substances (such as DDT) and heavy metals (such as mercury and lead) become concentrated at higher levels of a food chain. This is a good thing for the biota.
In a food pyramid, the total number of organisms tends to decrease as one travels down the trophic levels
Answers
The statement is true is that In a food pyramid, the total number of organisms tends to decrease as one travels down the trophic levels.
What is food pyramidIn a food pyramid, the total number of organisms decreases as one moves down the trophic levels this is because energy is lost at each trophic level as it is transferred from one organism to another.
The little fraction of the energy consumed by an organism is converted into biomass that is available for the next trophic level. Hence, the number of organisms decrease as one goes down the trophic levels, since there is no energy large enough for the large population at higher levels.
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The degree to which detrital particles have had their sharp edges and corners smoothed off by abrasion is _____________.
a.
varve
b.
cross-bedding
c.
sorting
d.
rounding
e.
drift
Answers
The degree to which detrital particles have had their sharp edges and corners smoothed off by abrasion is called rounding. The abrasion occurs when the particles rub against each other during transportation.
Rounding increases as the distance of transport increases.The more a particle is transported, the smoother and more rounded its edges become. Therefore, the degree of rounding can provide clues to the depositional environment, such as whether the sediment was deposited in a high-energy or low-energy environment.
In a high-energy environment, such as a fast-moving river, the particles are transported further and experience more abrasion, resulting in a higher degree of rounding. On the other hand, in a low-energy environment, such as a lake or a swamp, the particles are not transported as far and therefore are less rounded.
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Answer the following question:
"Is our score a good 'age index' that can be used to tell how
old a volcano is just from its surface features?" and make a graph
with the chart that was given
Answers
To determine if the score provided is a good "age index" for estimating the age of a volcano based on its surface features, we would need additional information regarding the specific criteria used to assign scores and the correlation between these scores and actual volcano age. Without such details, it is difficult to make a conclusive judgment.
However, assuming the score represents a comprehensive assessment of various surface features associated with volcano age (e.g., crater morphology, lava flow characteristics, erosion patterns), it could potentially serve as a useful indicator. A higher score would suggest a younger volcano with more distinct and well-preserved surface features, while a lower score may indicate an older volcano with more eroded or weathered features.
To evaluate the relationship between the score and volcano age, a graph can be created to visualize the data. The x-axis of the graph represents the volcano age (in years), while the y-axis represents the score assigned to each volcano. Each data point on the graph corresponds to a specific volcano, with the volcano age plotted against the assigned score.
By plotting multiple data points and examining the trend, we can determine the overall relationship between the score and volcano age. If there is a clear correlation or pattern observed, it would indicate that the score can indeed be a good age index for estimating the age of a volcano based on its surface features. On the other hand, if the data points are scattered or show no apparent trend, it would suggest a weaker relationship between the score and volcano age, reducing its reliability as an age index.
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Chapter 14: Glaciers:
12. What are glaciers and where and why do they exist?
13. Know how alpine glaciers move. (Explain the two ways).
14. List all the landscapes resulted of flowing glaciers (alpine). Know how to identify them on a figure.
15. What are some of the depositional features of glaciers? What kind of materials do they deposit?
Answers
12. Glaciers are large bodies of ice that form over many years from the accumulation and compaction of snow in areas where snowfall exceeds melting.
13. Alpine glaciers move through two primary mechanisms: internal deformation and basal sliding.
14. Landscapes resulting from flowing alpine glaciers include U-shaped valleys, cirques, aretes, horns, and moraines. U-shaped valleys are wide and have steep sides, formed by the erosion of glaciers.
15. Depositional features of glaciers include moraines, drumlins, eskers, and erratics. Moraines are ridges or mounds of rock and sediment deposited by glaciers.
12. They exist in polar regions, high mountains, and some colder regions at lower elevations. Glaciers form due to a combination of low temperatures and sufficient snowfall that exceeds the rate of snowmelt.
13. Internal deformation refers to the ice slowly flowing downhill under the pressure of its weight, causing the ice crystals to rearrange and deform. Basal sliding occurs when the ice slides over a thin layer of meltwater or debris at the glacier's base, lubricating its movement.
14. Cirques are bowl-shaped depressions at the head of a valley where glaciers originate. Aretes are sharp, narrow ridges between two adjacent glaciers, while horns are pyramidal peaks formed by the erosion of several cirques. Moraines are accumulations of rock and sediment carried by glaciers and deposited along their margins. These landscapes can be identified on topographic maps or aerial photographs.
15. Drumlins are elongated hills or mounds with a smooth, streamlined shape formed by the deposition of glacial till. Eskers are long, winding ridges of sand and gravel deposited by meltwater streams flowing within or beneath glaciers. Erratics are large boulders transported and deposited by glaciers, often different from the surrounding rock types. Glaciers deposit various types of materials, including till (unsorted mixture of sediment), outwash (sorted sediment deposited by meltwater), and erratics (large transported boulders).
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Assume that you have two soils forming under well-drained conditions, one forming on granitic glacial till and the other on basaltic glacial till. Remember spelling matters, double-check. a. The soil formed from would tend to have the higher clay content. This soil will have gone through extensive weathering, resulting in the formation of new minerals. b. The soils formed from will require less potassium fertilizer for agricultural production. During freezing and thawing condition this soil with go through weathering, resulting in increased surface area. c. The soil formed from would have a higher "chroma" (i.e., which soil would be redder). This soil will be redder because it will be enriched with
Answers
a. The soil formed from basaltic glacial till would tend to have the higher clay content. This soil will have gone through extensive weathering, resulting in the formation of new minerals.
b. The soil formed from basaltic glacial till will require less potassium fertilizer for agricultural production. During freezing and thawing conditions, this soil will go through weathering, resulting in increased surface area.
c. The soil formed from granitic glacial till would have a higher "chroma" (i.e., it would be redder). This soil will be redder because it will be enriched with iron oxide minerals, which give it a reddish color.
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sandstone contains abundant feldspar, suggesting that the sand was derived by weathering and erosion of granitic bedrock. Quartz-rich Oolitic Arkosic Lignitic
Answers
Arkosic Sandstone contains abundant feldspar, suggesting that the sand was derived by weathering and erosion of granitic bedrock.
What is the sandstone?Quartz-rich means that there is a lot of quartz in the sandstone, which is a mineral commonly found in sandstones. Olitic means having small round grains called ooids in a type of rock or sediment. These small round particles are usually made of calcium carbonate or silica.
Note that Arkose is a kind of rock made of sand that has lots of feldspar grains, quartz, and other minerals. It is usually linked with the breaking down of granite or transformed rocks due to weather.
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When sea ice melts, it uncovers dark water underneath that absorbs more sunlight than sea ice and leads to increased temperatures and more sea ice melting. This process is known as a ________________ feedback cycle that tends to make a system _______________.
positive; go out of control
positive; remain stable
negative; remain stable
negative; go out of control
Answers
The process described in the statement is an example of a positive feedback cycle that tends to make a system go out of control.
What is Positive feedback cycleIn a positive feedback cycle, when there is a change in one part of a system it results into a change in another part which amplifies the initial change.
In this case, the melting of sea ice results into an increased absorption of sunlight by the darker water, which in turn leads to more melting of sea ice. when this cycle continues and amplifies over time, it leads to further melting of sea ice and increase temperatures.
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Provide a full definition of the North Carolina NAD83 (HARN) coordinate reference system (CRS) with EPSG:3358 including the datum and projection. Explain how it is different from the geographic coordinate system WGS84 with EPSG:4326 commonly used by GPS. What are the units for each of these two CRS?
Answers
The North Carolina NAD83 (HARN) coordinate reference system is a modern and accurate coordinate system that is well suited for surveying, mapping, and other applications that require precise and reliable location data. It is a regional CRS that covers the state of North Carolina and is based on the North American Datum of 1983 (NAD83).
The North Carolina NAD83 (HARN) coordinate reference system is a modern and accurate coordinate system that is well suited for surveying, mapping, and other applications that require precise and reliable location data. It is a regional CRS that covers the state of North Carolina and is based on the North American Datum of 1983 (NAD83). The system uses the HARN (High Accuracy Reference Network) adjustment to improve the accuracy of the geodetic control network.
The NAD83 (HARN) CRS uses the Lambert Conformal Conic projection (EPSG:3358), which is a conic projection that preserves the shape of small areas while minimizing distortion at mid-latitudes. This projection is well suited for mapping large regions such as states or countries.
The WGS84 CRS with EPSG:4326, on the other hand, is a global geographic coordinate system that is commonly used by GPS. It is based on the World Geodetic System of 1984 (WGS84), which is a global datum that is used to define the shape and size of the Earth. The WGS84 CRS uses latitude and longitude to define locations on the surface of the Earth.
The NAD83 (HARN) CRS uses the US Survey Foot (1.000002 ft) as its unit of measurement, while the WGS84 CRS uses degrees as its unit of measurement for latitude and longitude. The two CRS are different in terms of their projection, datum, and units of measurement. While the NAD83 (HARN) CRS is designed for regional mapping and surveying applications, the WGS84 CRS is a global CRS that is used by GPS and other location-based services.
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What is the root cause for why Mars lost its atmosphere?
A.Mars' gravity is to weak to hold onto its atmosphere, which gradually leaked away.B.Mars' is so far from the sun that it is very cold and as it cooled following its formation its atmosphere froze out.C.The correct answer is not given.D.Mars' core ran out of iron to power its magnetic field.E.Mars' core solidified as it cooled.
Answers
Mars' gravity is too weak to hold onto its atmosphere, which has slowly slipped away. The right answer is A.
The root cause of the loss of Mars' atmosphere is primarily Option A: Mars' gravity is too weak to hold onto its atmosphere, which has slowly slipped away. Because of its relatively low mass and weaker gravity than Earth, Mars has struggled to retain its atmosphere on geologic time scales.
Atmospheric gases gradually escape into space, driven by a combination of evaporative processes and the action of the solar wind. This continuous loss of atmosphere has contributed significantly to Mars' current thin and fragile atmosphere.
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1. Blue Water and Green Water 10 a. Define Blue Water. What is the biggest form of 'Blue Water' available to us? b. Define Green Water. In what form is 'Green Water' stored after precipitation?
Answers
Blue Water refers to the freshwater resources that are found in lakes, rivers, groundwater, and other surface and subsurface water bodies while Green Water refers to the water that is stored in the soil and vegetation.
It represents the visible and accessible water that can be used for various human activities. The biggest form of Blue Water available to us is the water stored in the world's oceans, which accounts for about 97.5% of the Earth's water resources. Green Water refers to the water that is stored in the soil and vegetation.
It is primarily obtained from precipitation and is stored in the root zone of plants and in the upper layers of the soil. It plays a vital role in supporting plant growth and maintaining ecological balance. After precipitation, Green Water is stored in the soil as soil moisture and is utilized by plants through their root systems.
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Discuss (3 pages max) the metamorphism that resulted in the
formation of the Central Zone of the Limpopo Belt including the
rock types found in the entire belt
Answers
The Central Zone of the Limpopo Belt was formed during the Archaean period of the Precambrian era and is located in southern Africa. The Limpopo Belt is divided into three different zones, the Eastern, Central, and Western Zones.
The metamorphic event that formed the Central Zone of the Limpopo Belt is thought to have occurred between 3.2 and 2.9 billion years ago. During this time, sedimentary rocks, such as sandstones and mudstones, were buried beneath the earth's surface and subjected to extreme heat and pressure.
The rock types found in the Central Zone of the Limpopo Belt include gneiss, granulite, and migmatite. Gneiss is a metamorphic rock that forms when other rocks, such as granite or sedimentary rocks, are subjected to high heat and pressure.
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1) Atlantic silversides (Menidia menidia) display counter gradient variation in growth rate. During their growing seasons, northern populations grow far faster and larger than their southern counterparts. Why is rapid growth beneficial for northern populations? Why might slow growth be advantageous in southern populations? 2) A population of mice lives in a stable geographic territory. A developer comes along and builds a parking lot in that territory. This developer at least tries to accommodate nature by recreating the nesting ground of the mice in between parking lanes. That is, they place some boxes with straw (the Hilton to mice) throughout the asphalt lot. Yet, mice are repeatedly found dead around and in these artificial environments, but the population a short distance away in the grasslands are fine. There are no new predators, food is ample, and disease is low? What is going on?
Answers
Rapid growth is beneficial for northern populations of Atlantic silversides due to several reasons:
a) Shorter growing seasons
b) Enhanced survival and reproduction
c) Energy availability
How to explain the informationOn the other hand, slow growth can be advantageous for southern populations of Atlantic silversides due to the following reasons:
a) Longer growing seasons: Southern populations experience longer summers and milder temperatures, providing them with an extended favorable period for growth and reproduction.
b) Predation pressure: Southern regions may have higher predation pressure compared to the northern regions.
c) Resource limitations: Southern waters may have lower productivity and limited food resources compared to the north.
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Assuming the normal lapse rate, given a temperature of 27.4°c at
sea level, what will the temperature be at 3000 meters?
Answers
The temperature at 3000 meters would be 7.9°C.
The lapse rate refers to the rate at which the temperature decreases with increasing altitude. In this context, the "normal lapse rate" indicates the average rate of temperature decrease per unit of vertical distance, typically expressed in degrees Celsius per kilometer or per thousand meters.
It helps estimate the change in temperature at different elevations and is an important factor in understanding atmospheric temperature variations and vertical temperature profiles in various regions.
The normal lapse rate is approximately 6.5°C per 1000 meters of elevation. Therefore, at 3000 meters, the temperature will decrease by (6.5°C * 3) 19.5°C.
So, the temperature at 3000 meters would be 27.4°C - 19.5°C
= 7.9°C.
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Select all the worlds on which we have landed unmanned probes. A. Ganymede B. Europa C. Titan D. The Moon E. lo F. Mars G. Triton H. Venus 1. Jupiter
Answers
The different worlds in our Solar System on which we have landed unmanned probes are:A. GanymedeB. EuropaC. TitanD. The MoonE. IoF. MarsG. TritonH. Venus1. JupiterIn conclusion, we have landed unmanned probes on more than one world in our Solar System.
Several unmanned probes have landed on the different worlds in our Solar System. Select all the worlds on which we have landed unmanned probes.The different worlds in our Solar System on which we have landed unmanned probes are:A. GanymedeB. EuropaC. TitanD. The MoonE. IoF. MarsG. TritonH. Venus1. JupiterIn conclusion, we have landed unmanned probes on more than one world in our Solar System.
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Match the listed components of the solar system with their correct description. Choices - use a choice only once A. Europa B. Pluto C. The Asteroid Belt D. Uranus E. The Kuiper Belt F. lo G. Jupiter H. Venus 1. Neptune J. The Oort Cloud K. Saturn L. Callisto M. Comet N. Ganymede O. Mercury P. Ceres Q. Planetary Rings R. Mars S. Earth
Answers
The correct match of the listed components of the solar system with their descriptions.
A. Europa - One of Jupiter's moons known for its subsurface ocean and potential for life.
B. Pluto - A dwarf planet located in the Kuiper Belt beyond Neptune's orbit.
C. The Asteroid Belt - A region located between the orbits of Mars and Jupiter that contains numerous rocky objects called asteroids.
D. Uranus - The seventh planet from the Sun, characterized by its unique tilted axis and icy composition.
E. The Kuiper Belt - A region of the solar system beyond Neptune's orbit that contains icy bodies, including Pluto.
F. Io - One of Jupiter's moons known for its intense volcanic activity.
G. Jupiter - The largest planet in the solar system, known for its distinct bands of clouds and the Great Red Spot.
H. Venus - The second planet from the Sun, known for its thick atmosphere and extreme temperatures.
1. Neptune - The eighth planet from the Sun, characterized by its blue color and strong winds.
J. The Oort Cloud - A region of icy objects located at the outer edge of the solar system, believed to be the source of long-period comets.
K. Saturn - The sixth planet from the Sun, known for its prominent rings made of ice and rock particles.
L. Callisto - One of Jupiter's moons, known for its heavily cratered surface and the presence of an underground ocean.
M. Comet - A small celestial object composed of dust and ice that orbits the Sun, often characterized by a glowing coma and tail when it approaches the inner solar system.
N. Ganymede - The largest moon in the solar system and one of Jupiter's moons, larger than the planet Mercury.
O. Mercury - The smallest and closest planet to the Sun, characterized by its extreme temperature variations.
P. Ceres - The largest object in the asteroid belt between Mars and Jupiter, now considered a dwarf planet.
Q. Planetary Rings - Flat, disk-like structures composed of particles orbiting around certain planets, including Saturn and Uranus.
R. Mars - The fourth planet from the Sun, known for its reddish appearance and the presence of polar ice caps.
S. Earth - The third planet from the Sun, known for its diverse ecosystems and the presence of liquid water.
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You are traveling along a left-loterol transform fault and eventually reach a location where the strike of the fault suddenly bends to the left. What type of localized deforn would this bend produce?
Answers
The bend in the strike of the fault would produce a compressional deformation known as a restraining bend or a transpressional zone.
This localized deformation occurs as a result of the lateral movement and compression along the fault, leading to the bending and folding of rocks in the vicinity.
Strike, refers to the direction or orientation of a fault line or rock layer in relation to the horizontal plane. It represents the line of intersection between the fault plane or rock layer and a horizontal surface, usually measured as an angle relative to the north direction.
The strike of a fault provides crucial information about its orientation and helps in understanding the overall tectonic processes and structural geology of a region. It is an essential parameter used in geological mapping, fault analysis, and interpreting the deformation history of an area.
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If all the ice in the Greenland and Antarctica ice sheets melted, by approximately how much would global sea level rise around the world? 27 m 55 m 77 m 7 m 17 m
Answers
If all the Ice in the Greenland and Antarctica ice sheets melted, by approximately 77m the global sea level would rise around the world. The correct option is c.
If all of the ice in the Greenland and Antarctic ice sheets melted, global sea level would increase by around 77 meters. The fundamental cause of the increase in melting of ice sheets in Antarctica, Greenland, and glaciers is global warming and climate change, which is mostly caused by increased greenhouse gas emissions from unsustainable human activities.
If glaciers melt, sea level rise will be uneven and may vary from place to place. Though not as soon as possible, if all of Greenland's ice melts, global sea level will increase by around 7 meters around the planet. If all of the Antarctic ice melts, global sea level will rise by around 70 meters.
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What is the tectonic setting of the Hawaiian Islands?
a. Mid-Ocean Ridge Axis b. Continental lithosphere plate boundary
c. Oceanic Lithosphere moving over a stationary mantle hot spot
d. None of the above
Answers
The tectonic setting of the Hawaiian Islands is Oceanic Lithosphere moving over a stationary mantle hot spot.Option C is the correct answer.
Description of Hawaiian IslandsThe tectonic setting of the Hawaiian Islands is Oceanic Lithosphere moving over a stationary mantle hot spot. The Islands are volcanic islands that is located in the middle of the Pacific Ocean. It is formed by a mantle plume, or a stationary hot spot in the Earth's mantle, which lies beneath the Pacific Plate.
The Pacific Plate moves slowly over the hot spot, resulting in a chain of volcanic islands which increase in age from east to west.
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intresting facts about emission nebulae
Answers
An emission nebula is a type of nebula in space that emits light of various colors. It is formed when ionized gas, such as hydrogen, emits radiation as a result of being energized by nearby hot stars.
Emission Nebulae:Emission nebulae are regions of interstellar gas and dust in space that emit light of various wavelengths. They are primarily composed of ionized gas, such as hydrogen, and are often associated with regions of active star formation.
They are illuminated by nearby hot stars, whose intense ultraviolet radiation causes the surrounding gas to become ionized. This ionization process excites the atoms and molecules in the nebula, causing them to emit light at specific wavelengths, producing vibrant colors.
The most common emission lines observed in these nebulae are the hydrogen-alpha (H-alpha) and ionized oxygen lines. Emission nebulae are often characterized by their intricate and complex structures, including filaments, loops, and bubbles, which are shaped by the interplay between the intense radiation from the central stars and the surrounding gas and dust.
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How do horizontally layered rocks develop
Answers
Explanation:
Answer:
Horizontally layered rocks develop when layers of the rock are flat-lying. This type of topography associated with horizontally layered rocks can result in canyon landscapes when horizontal strata have varying resistance to erosion . The type of strain (deformation) that develops in a rock depends on the initial conditions of the rock , including the composition of the rock and the forces acting upon it. Over time, erosional processes such as weathering and water erosion can erode different layers of the rock at different rates, leading to the development of layered topography.
Explanation:
Clue Set #3
This country was once
covered by glaciers.
Has large reserves of coal.
Home of Buckingham
Palace.
Primarily Protestant
Christian nation.
Once had an empire that
covered 1/5 of the world's
land.
Currently a constitutional
monarchy.
Answers
Answer:
Britain/United Kingdom
Explanation:
Scientists often use the term 'super volcanic eruptions' to describe those eruptions that result in
short-term (1-2 years) cooling of global climate
formation of giant calderas
rapid subduction of oceanic plate in less than 1 month.
massive loss of lives (>100,000 casualties)
Answers
Super volcanic eruptions are exceptionally large volcanic eruptions that release a tremendous amount of magma, resulting in the formation of enormous volcanic craters called calderas.
These eruptions are characterized by the expulsion of massive volumes of ash, gases, and pyroclastic material into the atmosphere.
The term 'super' refers to the magnitude and scale of these eruptions, which are far more powerful and devastating compared to typical volcanic eruptions. Super volcanic eruptions can have significant global impacts, affecting the climate, environment, and even human populations.
While super volcanic eruptions can have indirect consequences such as short-term cooling of the global climate due to the injection of volcanic ash into the atmosphere, rapid subduction of oceanic plates, and massive loss of lives, these consequences are not defining characteristics of super volcanic eruptions. The primary defining feature is the formation of giant calderas.
Examples of super volcanic eruptions include the Toba eruption in Indonesia approximately 74,000 years ago and the Yellowstone eruption in the United States around 640,000 years ago.
In summary, the term 'super volcanic eruptions' refers to eruptions that lead to the formation of giant calderas, which are massive volcanic craters. These eruptions release vast amounts of magma and have significant global impacts.
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Part 1: Mid-Attantic Ocean Profile chains of volcanoes forin ealiod volcanic ares. the following ordet. 2. Check the box next 10 the Mid-Atlantic Ocean Profile line under the heading Profike tienes 3.
Answers
The Mid-Atlantic Ridge (MAR) is a largely underwater mountain range in the Atlantic Ocean that stretches from 87°N (approximately 333km south of the North Pole) to 54°S (subantarctic Bourvet Island). The Mid-Atlantic Ridge (MAR) is a volcanic mountain range that rises from the Atlantic abyss, spanning more than 16,000 km.
From the Arctic (Gakkel Ridge) to the Antarctic (Bouvet Triple Junction). The Mid-Atlantic Ridge is the world's longest mountain range. It spans from North America to beyond the southern tip of Africa along the Atlantic Ocean seabed. It climbs 6,000-13,000 feet (2,000-4,000 metres) above sea level and stretches for 10,000 miles (16,000 kilometres). A hotspot of volcanic activity exists beneath the ridge.
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What composition of magma is basalt made from primarily? Ultramafic Mafic Intermediate Felsic Question 28 When magma cools, it is generally the silicon and carbon that link together first. True False
Answers
1) Mafic magma is the primary composition of basalt, characterized by low silica content and high magnesium and iron levels.
Option (b) is correct.
2) The given statement " When magma cools, it is generally the silicon and carbon that link together first" is false.
1) Mafic magma is characterized by its relatively low silica content and high levels of magnesium (Mg) and iron (Fe). Basaltic magma is formed through partial melting of the Earth's mantle, specifically in areas such as oceanic crust and volcanic hotspots. It is known for its dark-colored appearance and is commonly associated with volcanic activity, forming basaltic lava flows and volcanic rocks.
Mafic magma has a lower viscosity compared to other types of magma, allowing it to flow more easily and cover larger areas during volcanic eruptions. Its composition gives basalt its characteristic features, including its density, mineral composition, and solidification behavior.
2) When magma cools and solidifies, the atoms of elements within the magma rearrange to form mineral crystals. The primary elements involved in this process are oxygen, silicon, and aluminum, which combine to create the crystalline structure. Carbon, on the other hand, is not a significant component in the crystallization of magma.
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The complete questions are:
1) What composition of magma is basalt made from primarily?
a) Ultramafic
b) Mafic
c) Intermediate
d) Felsic
2) When magma cools, it is generally the silicon and carbon that link together first. True False
What would occur if all of the ice on Greenland and Antarctica melted?
a.
glacial transgression
b.
marine transgression
c.
continental transgression
d.
marine regression
e.
continental regression
Answers
If all of the ice on Greenland and Antarctica were to melt, it would have significant consequences for the Earth's landmasses and oceans. Hence option B is correct.
The melting of this immense ice would lead to a rise in sea levels globally. Low-lying coastal areas and islands would be particularly vulnerable, facing increased risk of flooding and submersion.
The resulting scenario would be a combination of marine transgression and continental regression. Marine transgression refers to the encroachment of the sea onto land, and this would occur as sea levels rise due to the melting ice. Coastal regions and areas near river mouths would be gradually submerged, leading to the loss of habitats, infrastructure, and the displacement of populations.
At the same time, there would be continental regression, as the newly melted ice would contribute a massive influx of freshwater into the oceans. This could disrupt ocean currents and affect global climate patterns, leading to changes in precipitation, temperatures, and weather conditions worldwide.
Overall, the melting of all ice on Greenland and Antarctica would result in a complex interplay of marine transgression and continental regression, causing widespread and far-reaching impacts on coastal regions, ecosystems, and the global climate system.
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Experiments of human activities on rivers in mokopane
Answers
Explanation:
Human activities, including mining, agriculture, and urbanisation, have led to increased levels of pollution in the river. This has impacted both the water quality and the health of the river's aquatic life. Human activities and development in the region are also a threat to the river.
1.A map produced by a local Chamber of Commerce depicts the locational advantages for moving businesses to their town. This might be an example of the use of
A reference maps
B. thematic maps
C navigational maps
D.persuasion/propaganda maps
2.In the days before satellite assisted navigation, a special publication found on board most ocean going vessels titled The Coastal Pilot, assisted the navigator in locating where (most likely) they were making landa Rather than the perspective usually found on maps, the perspective is used in this publication.
A oblique
B. gnomonic
C plan or vertical
D. profile.
Answers
This might be an example of the use of D. persuasion/propaganda maps.
In the days before satellite assisted navigation The correct answer is C. plan or vertical.
What is the maps?The map made by a local business organization to show the benefits of moving businesses to their town is considered a type of map that tries to persuade or convince people. These maps are made to encourage people to do something or believe in a certain way.
In this situation, the Chamber of Commerce is using the map to show the advantages of their town as a good place for businesses. They want to attract businesses to move there.
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