Answer:
d).a nutrient rich upwelling current occurs along the coast of South America
Explanation:
El nino : El Nino occurs in Pacific region which produces global effect on weather patterns. It is climatic cycle and it occurs when warm waters in Western pacific oceans shifts towards the east of the coastal region of South America.
A nutrient rich upwelling current occurs along the coast of South America because the thermocline prevents the quantity of nutrients coming from the ocean surface by upwelling process along the coastal region of South America.
During El Niño, the usual nutrient-rich upwelling along the South American coast does not occur due to disrupted water movements, which is different from other periods when upwelling supports marine life by bringing deep, nutrient-rich waters to the surface.
Explanation:During El Niño, a few key environmental changes occur affecting oceanic and weather patterns. One of these changes is that there is a high air pressure cell in the western Pacific and a low pressure cell in the eastern Pacific. Additionally, warm surface water is moved from the western Pacific to the eastern Pacific. However, during El Niño, the upwelling of cold, nutrient-rich water along the South American coast is disrupted. This upwelling is crucial for maintaining the high productivity and nutrient levels of these waters, and its absence can have negative effects on marine life and local fisheries.
Question 4 (1 point) Subduction occurs as a result of slab pull-gravity pulls older and denser lithosphere downward. lubrication from the generation of andesitic magma. upwelling of hot mantle material along the trench. horizontal plate accommodation.
Answer:
slab pull-gravity pulls older and denser lithosphere downward
Explanation:
The subduction occurs only at the boundaries where an oceanic plate is involved, be it a boundary between two oceanic plates, or between oceanic and continental plates. The oceanic plate which is denser, heavier, because of the gravity is moving downward, thus it moves below the other plate. As it does, the plate gradually reaches the mantle layer where it starts to melt because of the high temperatures, thus it is getting recycled in a way. In this way, the oceanic plates are constantly getting destroyed, which is why the oldest oceanic crust is much younger than the oldest continental crust.
Which of the following occurs most frequently?
a.tropical storms
b.hurricanes
c. tropical depressions
d.they all occur with approximately the same frequency
Answer:
c. tropical depressions
Explanation:
Tropical depressions occurs most frequently.
Tropical depressions occur most frequently because they represent the initial stage of a tropical cyclone's development, from which they can evolve into tropical storms and subsequently hurricanes.
Explanation:The frequency of different types of tropical weather events can be understood in terms of their development stages. The stages are as follows: tropical depressions, tropical storms, and then hurricanes. Tropical depressions, with wind speeds between 25 and 38 miles per hour, are the initial stage of development. They can develop into tropical storms when winds reach between 39 to 73 miles per hour, which are then named. If the wind speeds exceed 74 miles per hour, a tropical storm is classified as a hurricane. Given this developmental progression, tropical depressions occur most frequently as they represent the starting point of what can potentially escalate into a more severe storm.
Tropical cyclones begin their life cycle as tropical depressions and can intensify into tropical storms and potentially hurricanes/major hurricanes if conditions are suitable. Therefore, tropical depressions occur more frequently since not all depressions will necessarily gain enough strength to become tropical storms or hurricanes.
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Animation: Tectonic Settings and Volcanic Activity w Part A Which of the following are common tectonic settings associated with volcanic activity? CHOOSE ALL THAT APPLY. transform plumes mantle plumes continental vifts continental arcs Island arcs Submit Bequest Answer 18 O Type here to search
Answer:
- mantle plumes
- continental arcs
- island arcs
Explanation:
The volcanic activities are very important for the planet, its physical features, composition of the atmosphere, climate. They can be found at the boundaries of the plates or near the boundaries of the plates, on land, in sea, or on the seafloor. The mantle plumes are the ones that give rise to the volcanoes, as they are the ones that propel magma from the mantle to the surface of the Earth. As mentioned, the volcanoes mostly form at and near the boundaries of the plates, and they usually create island arcs or continental arcs, depending on the type of boundary and where the magma will be able to penetrate the most easily.
The sun is properly classified as a type of:
A. star
B. planet
C. moon
Answer:
A star
Explanation: The sun is the brightest star in the solar system ,and is the only star that can be visible during the day.
Question 2 of 10 The asteroid belt is located where ? A. northern Canada B. between the orbits of mars and Jupiter c. outside the orbit of Neptune Reset Selection
Answer:
B
Explanation:
asteriod belt is the circumstellar disc in solar system locwted roughly between the orbit og mars and jupiter.
what was the constitution of 1787?
Answer:
the constitution of 1787 established the US as a nation and they wrote the government and laws that we use today. it was signed on September 17, 1787. if there are multiple choice please list and I will answer
Explanation:
QUESTION 5 The largest increases in global surface temperature in the past 20 years has been in the equatorial regions. Remember the world map with the slider to view surface temperature over time. True False QUESTION 6 What's been happening to the arctic sea ice and the land ice on Antarctica and Greenland in the past 20 years? Pick the BEST answer. 01.Arctic sea ice has lost a small amount of ice while Greenland has lost a large amount. O2. There has been no measureable amount of ice loss in either the Arctic or Antarctica ice sheets. O3. Greenland has gained ice, while the arctic and Antarctica have lost ice. 04. Both the arctic sea ice and the land ice on Antarctica and Greenland have lost large amounts of ice. Pick the eight key pieces of evidence that supports global warming from the following list burning of fossil fuels global temperature rise the greenhouse efect ocean acidification declining arctic sea ice sea level rise more snow for skiing in Colorado shrinking ice sheets last summer was really hot warming oceans glacial retreat extreme events QUESTION 9 What is the greenhouse effect? 1. Incoming solar radiation is trapped in the Earth's atmosphere by clouds. 2. Incoming solar radiation is trapped in the Earth's atmosphere by certain molecules resulting in warmer surface temperature. 3. Incoming solar radiation is reflected from the Earth's atmosphere by dust particles resulting in lower surface temperatures. 4. Incoming solar radiation is scattered in the Earth's atmosphere by molecules creating a more balanced climate. OO
1. False
In the past several decades, and especially in the past 20 years, the global temperatures have been on the rise. The rise of the temperature is not the same in all places, and there are differences between the regions, especially between the latitudes. The lowest latitudes tend to be the least affected, as the temperature has increased the least. The mid-latitudes have moderate increase in the temperatures, while the high latitudes have experienced the largest increase in temperatures, which has resulted in melting of the ice sheets.
2. Both the Arctic Sea and the land ice on Antarctica and Greenland have lost large amounts of ice
With the increase of the global temperatures because of the strengthening of the greenhouse effect, the high latitudes have been the most affected. The largest ice masses on the planet, have been heavily affected by this, with the ice sheets and glaciers on Antarctica, the Arctic, and Greenland all shrinking. Because they have all been losing lot of ice, it has affected the ocean waters, resulting in sea level rise, putting in danger lot of cities and islands around the world.
3. burning of fossil fuels - global temperature rise - the greenhouse effect - ocean acidification - sea level rise - shrinking ice sheets - warming oceans - glacial retreat
The global warming is a cyclic process that occurs on the planet. During the Pleistocene it has been occurring between the glacial periods. There are several factors that contribute to the global warming, some of which are cyclical movements and positioning of the Earth, while some are a result of the processes on the planet. The global warming has been a very important topic in the past few decades, with the main reason being that the human activity is actually resulting in speeding up of this process.
4. Incoming solar radiation is trapped in the Earth's atmosphere by certain molecules resulting in warmer surface temperature
The greenhouse affect is a process that occurs naturally, but in the past couple of centuries, the humans have also contributed to it. This effect is basically the accumulation of greenhouse gasses in the atmosphere, which manage to trap heat, thus increase the atmospheric temperature and the surface temperature of the planet. There are multiple consequences from this effect, such as rising temperatures, acidification of the oceans, melting of the ice sheets, rise of the sea waters.
Equatorial regions have experienced the largest increases in global surface temperature in the past 20 years. There has been substantial loss of Arctic sea ice, as well as land ice on Greenland and Antarctica. The greenhouse effect is the trapping of solar radiation in the Earth's atmosphere, resulting in a warmer surface temperature.
Explanation:The largest increases in global surface temperature in the past 20 years have indeed been in the equatorial regions. This is supported by the fact that glaciers and polar ice are melting at a faster rate, leading to rising sea levels. Additionally, the Arctic Sea ice has experienced significant loss, while the land ice on Greenland and Antarctica has also shown a substantial decrease.
The documented evidence supporting global warming includes the burning of fossil fuels, global temperature rise, the greenhouse effect, ocean acidification, declining arctic sea ice, sea level rise, shrinking ice sheets, and extreme events. These factors all contribute to the overall understanding of climate change and its impacts.
The greenhouse effect refers to the process where incoming solar radiation is trapped in the Earth's atmosphere by certain molecules, resulting in a warmer surface temperature. This phenomenon is primarily caused by the increase in greenhouse gases, such as carbon dioxide and methane, which trap heat and lead to global warming.
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Which of the following is NOT an indicator of an ongoing El Nino event? A) Lower than average pressure in the Eastern Tropical Pacific. B) Stronger than average easterly winds in the Eastern Tropical Pacific. C) Warmer than average temperatures in the Eastern Tropical Pacific. D) Higher than average thunderstorm activity in the Central and Eastern Tropical Pacific. E) Shallower than average thermocline in the Eastern Tropical Pacific
Answer: A: Lower than average pressure in the Eastern Tropical Pacific
Explanation:
- High pressure coastal South America weakens
- Reduces the pressure difference - reduce trade winds
- - warm water pool spreads along equator (September; reaches South America by December / January)
- Precipitation centre also moves
- Thermocline flattens out
- Peru: Weak or no upwelling
Tornadoes and hurricanes are both cyclonic storms, as well as most cyclones are tornadoes or hurricanes. True False
Answer: True
Explanation: Yes,tornadoes are small scale circulation produced by the winds and hurricanes are the strong circulation of the wind on the surface. So, both are considered as the wind swirling around the center in strong upward motion.
Hurricanes and tornadoes both are considered as the same cyclone because it appears in cyclic storm form and has downward motion at the mid of storm and circulation at the upward direction.
Choose the correct answer: The largest amount of tropical rainforest is on the continent of _____
A. Asutralia
B. South America
C. Asia
D. North Ameria
E. Africa
B. South America
Explanation:
Amazon Rainforests in Brazil are the largest in the world.
Question 8 of 10 Which of the following.planets has both moons and rings ? A. earth B.mars C. Saturn Reset Selection
Answer:
saturn
Explanation:
it has both 16 moons and beautiful rings
Clay minerals are light silicates that form ________. from molten rock from chemical weathering of igneous rocks from pressure and heat. from mechanical weathering of any rock
Answer: From chemical weathering of igneous rocks
Explanation: Clay minerals are the minerals that are a type of combination of light silicates having very minute size of particle and sheet like form. They mostly contain magnesium and aluminium as major component .They get formed in a long period of time as chemical weathering of the igneous rocks takes time by using silicates and some solvent with low dilution.
why is variety in plants inportant for food security
Answer:
Importance of food security.
Explanation:
Food security refers to the availability of food to everyone at all the time and at a reasonable prices. All nutrients and health factors that comes from food is very essential and important and all these cannot be extracted via any single plant. We need a combinations of plants to get all the energy required and also maintain a balance in nature so that the plant does not become extinct. Hence , if we use a variety of plants we can create that balance in nature and also stay healthy and fit ,
Therefore ,
variety in plants is important for food security.
An artesian well is one that ________. A. discharges groundwater at the ground surface without pumping B. has its intake sited within the vadose zone of an unconfined aquifer C. has its intake sited within the unsaturated zone of an unconfined aquifer D. has its recharge area at an elevation below sea level.
An artesian well is one that discharges groundwater at the ground surface without pumping. Thus, option 'A' is the correct option.
What is meant by an artesian well?Water flows naturally under pressure from an artesian well without the need for pumping. Wherever a gently sloping, permeable rock layer (like sandstone) absorbs water along its outcrop at a level higher than the level of the earth at the well site, it is excavated or drilled. Water from artesian wells is often of exceptional quality. The depth of the well, however, may have an impact on the water's quality.
Arsenic concentrations in wells that draw their water from bedrock formations, such as deep sandstone formations, may pose a health risk. A particular kind of spring water that emerges freely from deep wells is called artesian water. In contrast to conventional wells, artesian wells don't need a pump to draw water from the ground.
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An artesian well is one that discharges groundwater at the ground surface without pumping. The correct option is a.
A groundwater discharge at the surface of the ground without the use of a pump is known as an artesian well. It happens when a well is drilled into a confined aquifer that is sandwiched between impermeable layers and is under enough pressure to force water upward.
The higher elevation recharge area is where the pressure is generated because it allows water to pass through the permeable rock strata and create natural water pressure inside the confined aquifer. When a well is dug into the artesian aquifer as a result the water rises above the aquifer level and may even flow to the ground surface providing a dependable and continuous source of water without the need for additional mechanical pumping.
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1 Numerous practices have been developed to reduce ____________________, including reducing or eliminating tillage, managing irrigation to reduce runoff, and using terracing or contour planting.
2 Foods labeled as “natural” are required to contain at least 50% organic ingredients.
3 The genetic changes in genetically modified plants cannot spread to wild populations or affect natural biodiversity.
1. Erosion
The erosion is a very big problem in the agriculture. This problem is especially big where there are slopes, or the surface layer of the soil is very loose. In order to stop the degradation of the soil, thus to be able to use it on the long run and to have good yields, the people have started to come up with multiple solutions. One of the methods has been to reduce runoff from the irrigation, as with it, the top, most fertile layer of the soil is washing away. By using methods where the water falls on the land at a more direct angle, the soil is not washed away. Another method, used at places with steeper slopes, is the terracing. This method is basically creating terrace like flat parts on the slopes, and by doing so, the soil is preserved as it is flat, instead of being on a slope and constantly exposed to runoff and wind.
2. False
The label ''natural'' on the foods is a term that is very often used by the companies, but legally it is not really accepted and regulated. The companies use this term so that they can attract more costumers, leading them to believe that the product doesn't have any artificial additions. This is not true though, as pretty much all foods labeled like this do have artificial additions to them, and since it is legally not regulated as to what should the percentage of organic food be in them, there's not really a standard for it.
3. False
The genetically modified plants are very useful for the elimination of malnutrition among the humans, but on the other hand they are very dangerous for the biodiversity. While these plants will in general not reproduce with the wild ones, the dangers are that these plants are able to easily out-compete the wild ones. The genetic changes in these plants provide them with advantageous traits, such as being larger, producing more seeds, being resilient to harsher weather conditions, which leads to easily take over the wild populations and replace them.
The mode of energy transfer for most of the interior of the Sun is ____________________.
conduction.
radiation.
convection.
The mode of energy transfer for most of the interior of the Sun is radiation and convection.
Answer:
its B, your second answer..... Radiation . hope this helps (:
( I had this Qeustion on my test and radiation is the definite Answer, I promise )
Sandstone is an example of a(n) ____.
pyroclastic rock
clastic sedimentary rock
intrusive igneous rock
metamorphic rock
chemical precipitate sedimentary rock
Answer: Clastic sedimentary rock
Explanation: Sandstone is a type of rock that has the composition of sand sized rocks or minerals in it .They are clastic sedimentary rock because it gets formed from the clast .It is usually seen that sandstone is composed of quartz sand and some other sand as well.They also show a high resistance towards the natural weathering process while being on the earth surface.
Jupiter has a mass of about 318 times the mass of Earth and a diameter of about 11.2 times the diameter of Earth. The acceleration of a body falling near the surface of Jupiter is about A : 24.8 m/s2 B : 278 m/s2 C : 9.80 m/s2 D : 3.87 m/s2 E : 0.345 m/s2
Answer:
(a) 24.8 m/[tex]src^2[/tex]
Explanation:
acceleration due to gravity is given by [tex]g=\frac{GM}{R^2}=9.8 m/sec^2[/tex]
where G is gravitational constant M is mass of earth and R is radius of earth
it is given that mass of Jupiter is =318 M
and radius of earth =11.2 R
[tex]g_{jupiter}=\frac{318GM}{11.2^2\times R^2}=2.535\times 9.8=24.84375 m/sec^2[/tex]
so the acceleration due to gravity at Jupiter is 24.8 m/[tex]sec^2[/tex] so option a will be correct answer
Many rocky coasts occur along active margins. This is because
a.
active margins often experience repeated uplift, and thus the waves have not had sufficient time to erode the land surface down to sea level.
b.
active margins tend to have far fewer streams that feed sediment to the oceans; thus, there is not enough sand to create beaches.
c.
subduction along active margins consumes coastal sediments.
d.
active margins are associated with larger storms, which cause more erosion of sediment, leading to fewer beaches.
Answer:
Many rocky coasts occur along active margins. This is because -
( a ) active margins often experience repeated uplift, and thus the waves have not had sufficient time to erode the land surface down to sea level.
Explanation:
Active Margin -
The Active Margin are present at the edge of the continental plate that is crashed in an oceanic plate . It is possible that the active margins are uplifted rocky coasts . Hence , the wave does not have sufficient time to erode to the surface down the sea level . therefore , many rocks are found along this active margin . As , due to regular uplifts and hence , the waves do not have sufficient time to erode the land surface down to sea level .
Which of the following is not true?
Which of the following is not true?
The Kelvin scale starts at absolute zero.
The freezing point of mercury is -39° C.
Ice only has one melting point, but that point can be measured by different scales.
The Celsius scale is divided into 100 degrees between the melting and boiling points of water at sea level.
Freezing of water occurs at a single point, 0° C (32° F
Answer:
I think a..
Explanation:
cause Kelvin scale starts with 373k
The wrong statement is that 'Ice only has one melting point,' as it can vary under different pressure conditions; under standard atmospheric pressure, the freezing point is consistent across all scales.
The statement that "Ice only has one melting point, but that point can be measured by different scales" is not true in the list provided. The melting point of ice can be changed under different conditions such as pressure. However, in the normal atmosphere at sea level where pressure is standard, freezing or melting occurs at 0°C, 32°F, or 273.15K. All three temperature scales, Fahrenheit, Celsius, and Kelvin, share this freezing point at standard atmospheric pressure, but the melting point can indeed be different under varying conditions like pressure.
The Kelvin scale starts at absolute zero, which is correct. The statement regarding the freezing point of mercury at -39°C is also correct. The assertion about the Celsius scale being divided into 100 degrees between the melting and boiling points of water at sea level is accurate, and finally, the freezing of water occurs at a single point, 0°C or 32°F under standard conditions, which is true.
Which of the following factors would have the net effect of making a place warmer in the summer? Which of the following factors would have the net effect of making a place warmer in the summer? at a high elevation near an ocean in the middle of a landmass at a high latitude
The factor that would have the net effect of making a place warmer during summer would be that it is in the middle of a landmass.
The reason why a warmer summer would be present at the middle of a landmass is because landmass:
1. Has a lower specific heat capacity, and therefore can be heated up quickly, through receiving insolation from the sun.
2. Land is opaque, therefore insolation only concentrate in shallow areas, making the surface temperature increase.
3. There is no mixing of warm and cold layers, along with the lack of presence of evaporation, there would be less cooling
In sum, the above effects can be called continental climate, and thus the middle of a land mass is cooler.
For your reference, here's why the other options are not correct:
At a high elevation near an ocean - near the ocean would mean it has a maritime effect and therefore a cooler summer.
At a high latitude - with the less dense air, heat will be absorbed faster resulting in faster heat loss hence a cooler summer.
Hope it helps!
Multiple choice :
Normally, air pollution episodes are most severe when a) the country breeze is weak
b) a storm system is developing west of the area
c) a cold upper-level low moves over the area
d) a deep high-pressure area stagnates over the area e) a warm front passes through the area
Answer: d) a deep high-pressure area stagnates over the area
Explanation: It is usually observed that pollution state gets more worse during the time of high pressure such as during the cold time or winters. During the time of high pressure it becomes difficult for the air pollutants to get mixed with the area and thus they cause the major damage to the environment.
Smog is a example of such phenomena which affects the environment severely and cause breathing problem as well.
Where does your tap water come from? If you are in the city, you are likely on “city water” rather than well water. How often do you drink commercially bottled water? When at home are you more likely to drink bottled water or water from the tap? Why do you make that choice?
Answer:
I get my water from the store, I drink bottled water 10 months out of the year, the other 2 months i drink it from the sink, i drink bottled water while i am home because it tasts better
Explanation:
1. what is structural trap ? and give example?
1. what is stratigraphy trap ? and give example?
1. what is combination trap ? and give example?
Answer:
Structural Trap , Stratigraphy trap , combination Trap .
Explanation:
Structural Trap -
It is a type of geological trap that is formed due to the tectonic , gravitational , changes in the structure of the subsurface and the compactional processes .
These changes leads to the formation of the petroleum reservoir by blocking the upward migration of the hydrocarbons.
They are one of the important traps since , it represents majority of the world's discovered petroleum resources .
The examples of the structural trap are -
the fault trap , anticline trap , and the salt dome trap .
Stratigraphy Trap -
The formation of Stratigraphic traps are due to the vertical and lateral variations in the texture , porosity , thickness and the lithology of the reservoir rock .
The examples of the Stratigraphy trap are -
An unconformity trap , a reef trap and a lens trap .
Combination Trap -
The trap having two or more trapping elements are called Combination traps. This type of trap is due to changes in lithology and tectonic process.
The examples of the Combination trap is -
salt dome.
Faulting is the result of _____________ plate tectonic processes.
Question 8 options:
extensional
compressional
transform
all of these
none of these
Answer: All of these
Explanation: Plates tectonics process is the process that usually takes place near the edges of the planes and it is caused when the earth's outer shell gets divided into various number of plates and get floated over the mantle surface. Faulting occurs when there is any sort of action like extension, compression or transformation in the tectonic plates .
Subtropical deserts are centered around 20-30 degrees north and south latitude, true or false?
It is true that subtropical deserts are centered around 20 degrees to 30 degrees north and south latitude.
Explanation:The atmospheric environment of subtropical climate inhibits precipitation as the air always descends with clear skies, elevated inversions. Most of the Earth's tropical desert climate occurs between 15 to 30 degrees north and South latitude.
Temperatures are usually high (21-32) and on a daily basis variations are extreme. The deserts are subject to frequent fog and low-level clouds. The cooling results from the oceans and coastal waters give rise to cold currents. The maritime air penetrates less frequently as the high and low sun-monsoonal winds blow along the coast.
Describe the nature of Earth's axial tilt and orbit around the Sun.
Explanation: The Earth's axis is inclined in relation to the ecliptic, i.e. in relation to the Earth's path when revolving around the Sun. The inclination or axis tilt is the angle, for which the vertical Earth's axis is inclined towards the ecliptic, which is about 23°, and consequently the different amounts of the Sunlight reach to different points on Earth during the year. In other words, this phenomenon causes a change in the seasons on Earth. This means that the change of seasons is not caused by changes in the distance between the Earth and the Sun during Earth's revolving around the Sun, i.e. during the year, because these changes in distance are extremely small, and their influence on the phenomenon of change of seasons is negligible.
Based on your knowledge of blackbodies, should the hotter star or the cooler star be more luminous
Answer:
Hotter star is more luminous.
Explanation:
A blackbody is an object that absorbs all the radiation incident on it. It does not reflect or let the radiation pass through it.
When the radiations are absorbed, the blackbody heats up. This results in the emission of radiation by the blockbody.
The amount of radiation the black body emits, depends upon the temperature of the blackbody. Therefore, greater the temperature of the blackbody, more the emitted radiation.
A star is very similar to a blackbody. So, if two stars are compared, then the hotter star will emit more light as compared to the cooler star.
Therefore, the hotter star will be more luminous than the cooler star.
Scientists believe that approximately 10 million years ago the closing of the Isthmus of Panama changed the climate of Earth so severely that winters in Europe became 10°C warmer than they had been. Why did this happen? A. Cold Caribbean Sea waters were forced up into the north Atlantic Ocean. B. Warm Caribbean Sea waters were forced up into the north Atlantic Ocean. C. The ice in the Caribbean Sea was broken apart by plate movements. D. A mountain range formed that blocked the movement of cold air into the area.
Answer:
B. Warm Caribbean Sea waters were forced up into the north Atlantic Ocean
Explanation:
South America and North America were not connected until 10 million years ago, but instead they were separated by water, thus the Caribbean Sea was connected with the Pacific Ocean. Because of this, the warm waters from the Caribbean were not forced further north in the Atlantic, but instead they were moving between the two continents. Once the two continents merged though, the warm Caribbean waters were forced to move toward the north Atlantic, thus they started to move towards Europe. Because they were warm currents, they significantly warmed Europe, up to 10 C degrees more on average, significantly changing the climate in this part of the world.
The distance from the earth to the sun is known as:
A. a light year
B. an astronomical unit
C. one million miles