How can studying glaciers and other iceforms help climatologist, climate scientist, understand the changes in the earth's climate over time?
Answers
Answer:
The glaciers and other ice forms are excellent storage of all sorts of particles that are good indicators for the climate in the past, but also their density and composition helps a lot in this.
Explanation:
There are numerous different methods and means through which the climate in the past can be examined and reconstructions to be made about it. Some of the indicators are the ice forms, rock layers, or even the very old trees if we look for climate information for the past several hundred years. The ice forms are often used for information about the climate in the past and there is a very good reason for it.
The ice forms, like the glaciers, are actually very good storage of all kinds of different particles, which are very well preserved into the ice. Some of the most important particles are the ones from pollen, as it spreads over very wide areas, gets well preserved, and manages to describe the vegetation, thus the climate based on them. Also, the density and composition of the ice is a very good indicator of the oscilliations in climate, did the climate warmed up or cooled down and how long did that lasted.
Answer: The glaciers and other ice forms are excellent storage of all sorts of particles that are good indicators for the climate in the past, but also their density and composition helps a lot in this.
Explanation: GoePanther
Related Questions
Which practices have reduced air pollution in Western Europe?
Answers
2. During a given shift at an assembly plant, a crimping line worker has a typical day as follows: 08:00 AM - 08:30 AM - Arrive at plant and attend morning meeting 08:30 AM - 10:00 AM - Assembling parts at crimping machine 10:00 AM - 10:15 AM - Break 10:15 AM-11:30 AM - Assembling parts at crimping machine 11:30 AM - 12:30 AM - Lunch Break 12:30 AM - 02:00 PM - Assembling parts at crimping machine 02:00 PM-02:15 PM-Break 02:15 PM-04:00 PM - Assembling parts at crimping machine From past measurements, the health and safety planner knows that the hourly Leq's of each activity are as follows: Staff meeting and planning room - Leq =45 dB(A) - Crimping Machine - Leq =90 dB( A) - Lunch/Break Room - Leq =60 dB( A) Given these conditions, (a) What is the anticipated Dose percentage for this employee using: (i) the old North American dose standards, and (ii) the European dose standard? (b) What is the 8-hr Leq for the employee? (c) Does this environment pass or fail the requirements for the old North American standard, Europe or the new Ontario standard?
Answers
(a) (i) Using the old North American dose standards, the anticipated Dose percentage ≈ 1.26%
(ii) Using the European dose standard, the anticipated Dose percentage ≈ 3.14%
(b) 8-hr Leq for the employee = 68.125 dB(A)
(c) Compliance with standards:
(i) Old North American standard: The environment passes the requirements of the old North American standard.
(ii) European standard:
The European standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday.
To calculate the anticipated Dose percentage, 8-hr Leq, and determine if the environment passes or fails the standards, we need to perform the following calculations and comparisons:
(a) Anticipated Dose Percentage:
(i) Using the old North American dose standards:
The old North American dose standard states that the maximum permissible exposure for an 8-hour workday is 90 dB(A). To calculate the dose percentage, we need to compare the time-weighted average (TWA) noise exposure to the maximum permissible exposure. We'll calculate the TWA using the given Leq values and durations for each activity:
TWA = ((Duration1 * Leq1) + (Duration2 * Leq2) + ... + (DurationN * LeqN)) / Total Duration
Total Duration = 8 hours = 480 minutes
Duration1 = 30 minutes = 0.5 hours
Leq1 = 45 dB(A)
Duration2 = 90 minutes = 1.5 hours
Leq2 = 90 dB(A)
Duration3 = 15 minutes = 0.25 hours
Leq3 = 60 dB(A)
Duration4 = 60 minutes = 1 hour
Leq4 = 90 dB(A)
Duration5 = 15 minutes = 0.25 hours
Leq5 = 60 dB(A)
Duration6 = 105 minutes = 1.75 hours
Leq6 = 90 dB(A)
Calculating the TWA:
TWA = ((0.5 * 45) + (1.5 * 90) + (0.25 * 60) + (1 * 90) + (0.25 * 60) + (1.75 * 90)) / 8 = 545 / 8 ≈ 68.125 dB(A)
Dose Percentage = 100 * (TWA / 100)^(1.5 - 90) = 100 * (68.125 / 100)^(1.5 - 90) ≈ 1.26%
(ii) Using the European dose standard:
The European dose standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday. We'll perform the same calculations as above, but compare the TWA to 87 dB(A) instead:
TWA = 68.125 dB(A) (calculated above)
Dose Percentage = 100 * (TWA / 100)^(1.5 - 87) = 100 * (68.125 / 100)^(1.5 - 87) ≈ 3.14%
(b) 8-hr Leq for the employee:
The 8-hour Leq represents the equivalent continuous noise level over an 8-hour workday. We can calculate it using the same formula as the TWA:
8-hr Leq = TWA = 68.125 dB(A) (calculated above)
(c) Compliance with standards:
(i) Old North American standard:
The old North American standard sets the maximum permissible exposure at 90 dB(A) for an 8-hour workday. Since the 8-hr Leq is 68.125 dB(A), which is below the maximum permissible exposure, the environment passes the requirements of the old North American standard.
(ii) European standard:
The European standard sets the maximum permissible exposure at 87 dB(A) for an 8-hour workday. Since the 8-hr Leq is 68.125 dB
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How did Alfred Wegener's idea (Continental Drift) challenge the widely accepted view that continents and ocean basins had not changed size/shape at all during Earth's long history?
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Alfred Wegener's concept (Continental Drift) challenges the widely held belief that continents and ocean basins have not changed in size or shape over Earth's long history by providing evidence such as
He relied on fossil evidence, such as tropical plants discovered on Spitzbergen, an Arctic island. He discovered large-scale geographic features that corresponded, such as the Appalachian Mountains in the United States and the Scottish Highlands, as well as South African rock strata that corresponded to those in Brazil. He contended that previous land bridges between continents had collapsed. He also argued that mountains did not form like wrinkles on the skin of a drying apple, but rather when the edges of drifting continents crumpled and folded.
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what could the degree of grain sorting and roundness tell you about the depositional history of a sedimentary rock?
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Roundness of sediment grains the more a particle moves,the more rounded and spherical it must become. angular particles tend to settle close to their source.
This smoothing of the rock fragments during transport is called rounding. large, coarse, angular sediments will be deposited near the source area well-rounded sand grains will have been transported a considerable distance before being deposited,and clay have been taken even further. texture is related to the size of the individual mineral grains in the final solid rock. In most cases,the resulting grain size depends on how quickly the magma cools. In general,the slower the cooling, the larger the crystals in the final rock. If the corners and edges are fairly smooth, the grain is well rounded. If the corners and edges are sharp and angular,the grain is poorly rounded. the roundness value of 1 for perfectly rounded particles and the small fractional value for less rounded particles.
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Why is improving land quality and education a better way to ensure food security than providing foregin aid?
Answers
Answer:
Explanation:
Food insecurity – often rooted in poverty – decreases the ability of countries to develop their agricultural markets and economies. Access to quality, nutritious food is fundamental to human existence. Secure access to food can produce wide ranging positive impacts, including: Economic growth and job creation.
In Arabic the Muslims call Jerusalem AL- Quads, which means, the “_________-___________.
Answers
Answer:
Jerusalem refers to the multiple names by which the city of Jerusalem has been ... Today, Jerusalem is called Yerushalayim (Hebrew: יְרוּשָׁלַיִם) and ... Muslims as Bayt al-Maqdis (Arabic: بَـيْـت الْـمَـقْـدِس), which means House of ... The modern Arabic name of Jerusalem
Explanation:
why is a change of a few degrees in average global temperatures more concerning than day-to-day weather changes of a few degrees?
Answers
A change of a few degrees in average global temperatures is more concerning than day-to-day weather changes of a few degrees because it has long-term effects on the planet's climate system.
When the Earth's temperature rises, it leads to melting of polar ice caps, sea-level rise, and changes in weather patterns.
These changes can have severe consequences on ecosystems, leading to habitat loss and extinction of species.
Additionally, extreme weather events, such as hurricanes, floods, and droughts, become more frequent and intense, causing damage to infrastructure, human life, and economies.
Therefore, it is crucial to mitigate global warming by reducing greenhouse gas emissions to limit the temperature increase and protect the planet's future.
In contrast, day-to-day weather changes do not significantly impact the planet's climate system and can be managed through adaptive measures.
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During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. The figure shows a cross section of Mt. Fuji, in Japan. (a) At what initial speed would a bomb have to be ejected, at angle θ
0
=42
∗
to the horizontal, from the vent at A in order to fall at the foot of the volcano at B, at vertical distance h=3.40 km and horizontal distance d =9.10 km ? Ignore, for the moment, the effects of air on the bomb's travel. (b) What would be the time of flight? (a) Number Units (b) Number Units
Answers
During volcanic eruptions, the chunks of solid rock blasted out of the volcano are called volcanic bombs.
Here, we have to find the initial speed of the bomb at angle θ = 42° to the horizontal so that it falls at the foot of the volcano at B, at vertical distance h = 3.40 km and horizontal distance d = 9.10 km. We need to ignore, for the moment, the effects of air on the bomb's travel. Let's calculate the initial speed required in (a).
(a) Initial speed required:To calculate the initial speed required, we can use the formula for the horizontal range of a projectile:x = v0cosθt, where v0 is the initial speed of the projectile, θ is the angle of projection, and t is the time of flight.We can also use the formula for the vertical displacement of a projectile:y = v0sinθt - (1/2)gt², where g is the acceleration due to gravity.To calculate the initial speed, we can use the following steps:At the foot of the volcano at B, the horizontal distance d = 9.10 km and vertical distance h = 3.40 km.The horizontal distance travelled by the projectile, x = 9.10 km = 9100 m.
The vertical distance travelled by the projectile, y = 3.40 km = 3400 m.The angle of projection, θ = 42°.The acceleration due to gravity, g = 9.8 m/s².We can use the formula for y to find the time of flight, t:y = v0sinθt - (1/2)gt² => 3400 = v0sin42°t - (1/2)(9.8)t²We can use the formula for x to find the initial speed, v0:x = v0cosθt => 9100 = v0cos42°t => t = 9100 / (v0cos42°)Substitute this value of t in the formula for y:3400 = v0sin42°(9100 / (v0cos42°)) - (1/2)(9.8)(9100 / (v0cos42°))²We can simplify this equation as follows:tan42° = y/x => v0² = (x² + y²) / (2xytan42°)Substitute the values of x, y, and θ:v0² = [(9100)² + (3400)²] / [2(9100)(3400)tan42°]v0 = √(2gh), where g is the acceleration due to gravity and h is the height of fall of the bomb.v0 = √(2 × 9.8 × 3400) = 836 m/s
Therefore, the initial speed required is 836 m/s.(b) Time of flight:To calculate the time of flight, we can use the formula for x:x = v0cosθt => t = x / (v0cosθ)Substitute the values of x, v0, and θ:t = 9100 / (836 × cos42°) ≈ 14 sTherefore, the time of flight is 14 s.
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Which of the layers of the Earth has the following three characteristics?
Answers
Answer:
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic
Softer kinds of rock such as sandstone are eroded ________ than harder kinds of rock such as granite.
Answers
Softer kinds of rock such as sandstone are eroded faster than harder kinds of rock such as granite.
In common usage, there is no difference in meaning. In this context, both words refer to getting to a place in less time. I get there earlier [than you]. Fast can be used both as an adverb and an adjective, but faster can only be used as an adjective.
"Faster" is superlative of "faster", but the problem here is that neither is technically correct. Since fast is an adjective and fast is an adverb, it should be "faster". However, the word "faster" has become accepted because people have come to use adjectives as adverbs in such cases.
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The hundreds of varied fruit fly species on the hawaiian islands arose through adaptive radiation. which piece of evidence would best support this claim?
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The hundreds of varied fruit fly species on the Hawaiian Islands arose through adaptive radiation. The piece of evidence would best support this claim is:
The Hawaiian fruit fly species are more closely related to each other genetically than they are to non-Hawaiian fruit flies.
ABOUT HAWAIIHawaii is one of two states in the United States that are located separately from the mainland. It is geographically located in the middle of the Pacific Ocean and is approximately 2,000 miles (3,200 km) from the southwestern United States.
In addition, Hawaii is the only US state that is a chain of islands. Before joining the US, Hawaii was an independent nation.
Early history of HawaiiThe first settlers of the Hawaiian Islands were Polynesian sailors, who arrived around the 8th century. After that, followed by immigrants from Raiatea, Bora Bora, Tahiti, where the community is led by a tribal chief. Hawaiians' first contact with Europeans occurred in 1778, when Captain James Cook arrived with his fleet.
After James Cook's visit, the Hawaiian Islands began to attract the attention of Europeans and Americans, who came with various interests. However, the newcomers turned out to bring the pe plague
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Describe the three forecasting time horizons and their use.
Answers
Forecasting time horizons refer to the length of time over which a forecast is made. Three common forecasting horizons include short-term, medium-term, and long-term.
Short-term forecasting is typically used for planning within the next three to twelve months. These predictions enable companies to plan for upcoming activities and resources, as well as identify potential risks.
Medium-term forecasting usually covers one to five years and is mainly used to plan for expansion or other large-scale projects. Knowing when and what projects to undertake helps businesses make strategic decisions.
Finally, long-term forecasting is focused on periods of six years or more. It generally helps organizations determine the best strategies and investments to pursue. Long-term forecasts also enable companies to plan for market changes over the years and adjust accordingly.
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If Europe is located at the same latitudinal
parallel as Canada, why is its climate so
much warmer? Explain. (I need help)
Answers
Answer:
Ocean Currents
Explanation:
The gulf stream flows towards Europe. This is a warm ocean current that makes Europe much warmer than Canada.
Marsupials_________. Group of answer choices are small furry animals that have a pouch and give birth to at least 20 babies at a time. This insures that at least one will survive. give birth to mature offspring only once every ten years, so that each baby will have enough time to grow in the father's pouch give birth to tiny little premature offspring, which then grow to maturity in the mother's pouch give birth to mature fully formed furry offspring, who then nurse and grow strong in their mother's pouch
Answers
Answer:
small furry animals that have a pouch and give birth to at least 20 babies at a time.
Explanation:
Marsupials are a member of the mammal and are endemic to Australia and America. The distinctiveness of these species is that they carry the young in their pouches.Which river serves as part of the eastern border of israel?
Answers
Britain had the right to "postpone or withhold" the application of the clauses pertaining to the "Jewish National Home" in the region east of the Jordan River, formerly known as Transjordan. border of israel.
The State of Israel's current borders were established through a combination of diplomatic agreements and previous battles with both its neighbours and former colonial powers. The majority of Israel's border disputes are based on territorial changes that occurred as a result of the 1967 Arab-Israeli War, which saw Israel occupy large swathes of territory from its rivals. Of Israel's five total potential land borders, only two are recognised by the international community and remain uncontested. Since the 1979 Egypt-Israel peace treaty and the 1994 Israel-Jordan peace treaty, respectively, Israel has two officially acknowledged and confirmed borders with Egypt and Jordan, whereas its borders with Syria (via the Israeli-occupied Golan Heights), Lebanon (via the Blue Line; see Shebaa Farms), and Palestine (via the Green Line) are less clear.
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What arrangement would give us the largest tides?
Answers
This would be around each new moon and full moon – when the sun, Earth, and moon are located more or less on a line in space – the range between high and low tides is greatest. These are the spring tides.
Which pair of processes do scientists think move earth's lithospheric plates? question 7 options: gravity acting on the edges of plates and friction between the plate and the asthenosphere friction between the plate and the asthenosphere and pressure of magma on the edge of the plate gravity acting on the edges of plates and convection in the mantle convection in the mantle and pressure of magma on the edge of the plate.
Answers
Convection in the mantle and pressure of magma on the edge of the plate of processes do scientists think move earth's lithospheric plates.
The lithosphere is the strong, outer a part of Earth. The lithosphere consists of the brittle top part of the mantle and the crust, the outermost layers of Earth's shape. it is bounded by the surroundings above and the asthenosphere (any other a part of the top mantle) under.
The lithosphere is the pinnacle solid layer, outer part of the Earth. The lithosphere consists of the upper part of the mantle and the crust. The lithosphere is damaged down into strong irregularly formed rigid slaves of varying sizes on the planet's floor known as lithospheric plates.
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What is an extrusive rock mostly made of?
Answers
Extrusive rocks are mostly made of volcanic materials such as lava or ash that solidified on or near the Earth's surface.
Extrusive rocks are formed from volcanic activity where magma rises to the surface and cools quickly, forming volcanic materials such as lava or ash. These rocks are also known as volcanic rocks, and they are typically fine-grained due to the rapid cooling process.
Extrusive rocks can be found on or near the Earth's surface, and examples include basalt, pumice, and andesite. These rocks can provide valuable information about past volcanic activity and the geologic history of an area.
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Select the correct answer.
What is the name for the areas of calm winds near the equator?
Answers
I helped my friend with this answer on one of her test and I’m pretty sure the correct answer was doldrums
why doesn't earth have as many craters as the moon? why doesn't earth have as many craters as the moon? most of earth's craters have been erased by volcanism, tectonic activity, and erosion. fewer meteors have hit earth. the moon acts as a shield, preventing craters from hitting earth. earth's atmosphere acts as a shield.
Answers
The atmosphere of Earth is largely responsible.The atmosphere that surrounds Earth is also something that other planets like Mars, Mercury, and the Moon do not have.
Since the majority of craters on our planet have been eroded away by wind, water, volcanic activity, or other processes, we don't see as many of them as we once did.
When meteoroids strike the surface of a planet, the atmosphere breaks them up into tiny particles, lessening their impact. Additionally, a planet's atmosphere determines its own weather; if there is no atmosphere, there is no weather. Therefore, craters cannot be eroded away on planets like Mars and Mercury since there is no atmosphere or weather on those worlds. Therefore, the majority of them may still be seen on their surfaces.
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Why is it weird that we have so many coal deposits in cold regions of the earth?.
Answers
Answer:
Because coal burns at a slow rate for a long time, it's more efficient as an energy source than other fossil fuels.
But it is weird.
: )
Explanation:
It is weird to have so many coal deposits in cold regions of the earth because there is very less temperature and coal needs a high temperature to be produced.
What are coal deposits?Coal is a more effective energy source than other fossil fuels because it burns slowly and continuously.
Due to climate change and crustal plate tectonics, which occasionally pushed ancient continental masses through subtropical and even tropical regions, substantial coal deposits can be found in areas that presently have arctic or subarctic climates.
Other problems with mining minerals in Antarctica include the fact that weathering processes that concentrate minerals in other regions of the world don't occur there. The continent is frozen and has been for millions of years, with little to no liquid water moving.
Therefore, because there is relatively little temperature and coal needs a high temperature to be created, it is strange to have so many coal resources in chilly places on the planet.
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what is the essential difference between a mesa and a cuesta
Answers
Answer:
A mesa is a small (<10 km2)plateau bounded by cliffs, commonly in an area of flat-lying sedimentary rocks. A cuesta is an asymmetric ridge in dipping sedimentary rocks as the Flatirons. topography unsuitable for agriculture.
Explanation:
What events led the group in power to have power? for the Darfur genocide
Answers
Answer:
Top 10 Darfur Genocide Facts: In 1989, then-General Omar al-Bashir seized control of Sudan through a military coup. The country was in the middle of a 21-year civil war between the North and South regions when the leader came to power and tensions continued to build.
Explanation:
If you were in a wide open field of grass with no buildings or man-made structures are nearby and a 6.5 earthquake occurred, would you be injured or killed?
A. No, I may just fall to the ground but no building is there to injure me
B. Yes, a 6.5 is a pretty powerful quake.
Answers
Answer:
A.
Explanation:
The answer seems to explain it for me. It seems almost too easy in that we are surrounded by nothing. Cracks would still be able to form in the Earth, but it would be unlikely that you would be killed as a result. If no structures are nearby, you're as answer A depicts.
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what are the two important motions of the earth
Answers
Answer:
The Earth turns (rotation around the polar axis), goes along on its orbit (revolution around the Sun), swings smoothly as un unbalanced spinning top (equinoctial precession)
Explanation:
In two to three sentences, explain Ancient Greek's Influence on the study of modern day mathemati
Answers
Without the Ancient Greek's influence on modern day mathematics, we would not have the number systems and math that we have today. We most likely would not know how to do alot of math things if it wasn't for ancient groups of people. Also, the ancient aztecs also influenced our math world!
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What are the average high and low temperatures (in degrees Celsius) for Isla Hoste in August?
Answers
Answer:2.2 c is normal 5.6 c is warmest -1.0 c is coldest
Explanation:
Isla Hoste experiences an annual average temperature of 41.0°F (5.0°C). The average temperature for the warmest month is 49.0°F (9.4°C) in January. Hence In August High was 45 degree (5.0°C) and lowest was -10 degree .
What is high and low temperatures ?The forecast high is the maximum temperature anticipated for that day, which is often in the late afternoon. The forecast low is the temperature that is predicted to be at its lowest during the upcoming overnight period, which on most days will happen around dawn the following morning.
The normalized high or low for at least 30 years is the average high or low temperature. A statistical average is hence a mean high or mean low. Records must be maintained at for an average high or low temperature to have statistical significance, at least 30 years must pass.
Information about high and low temperatures is frequently taken to mean that these are the USUAL high and low temperatures. Temperatures that are average are NOT usual.
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I NEED HELP RIGHT NOWW! What issues are on the United Nations agenda for sustainable development for 2015?
Answers
Answer:
to find new ways to improve the lives of the world's people, to eradicate poverty, to promote prosperity and well-being for all,
Explanation:
The goal of the plan: to find new ways to improve the lives of the world's people, to eradicate poverty, to promote prosperity and well-being for all, to protect the environment, and to fight against climate change.
WHO WAS THE FIRST PERSON.
Answers
meeeeeeeeeeeeeeeeeeeee
Label important physical features on each of the maps. Be sure to include mountain ranges, rivers, deserts, oceans, and seas.
Include the major cities of both civilizations on your maps, labeling them and placing them in the proper location.
Answers
Answer:
The west and north of the country are dominated by sunken basins (such as the Gobi and the Taklamakan), rolling plateaus, and towering massifs. It contains part of the highest tableland on earth, the Tibetan Plateau, and has much lower agricultural potential and population.
Its territory includes mountains, high plateaus, sandy deserts, and dense forests. One-third of China's land area is made up of mountains. The tallest mountain on Earth, Mount Everest, sits on the border between China and Nepal. China has thousands of rivers.
Mountains, deserts, rivers, beaches, deep canyons and fertile plains all make up China's unique and storied geography.
The vast land expanses of China include plateaus, plains, basins, foothills, and mountains. Defining rugged plateaus, foothills and mountains as mountainous, they occupy nearly two-thirds of the land, higher in the West and lower in the East like a three-step ladder.