how did scientist find out the different layers of the interior of the earth

(btw sorry I could not find science subject)​

Answers

Answer 1
By studying seismic waves

Related Questions

Which phrase is the best definition of the word technology, in the narrow
sense?
O A. Tools and their use
O B. Exchange of new ideas
O C. Fast communication
O D. Better ways to do things

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Answer:

I think the answer is better ways to do things

effects of low temperature in crop
production​

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Colder weather can decrease plant enzyme activity. This then disrupts plant nutrient intake because plants secrete enzymes to digest surrounding materials for soil. Consequently, this can stunt growth or more severely cause them to die

1 =1 ? herty rta4356gb? is g sdfgbns iesx?

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what this means but give a thanks

how does environmental population change in growth​

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Answer:

We humans are remarkable creatures. From our humble beginnings in small pockets of Africa, we have evolved over millennia to colonise almost every corner of our planet. We are clever, resilient and adaptable―perhaps a little too adaptable

^^^^your welcome!!!!

identify the statement that is true about soil-forming factors. a. Dry soils tend to contain more organic material than wet soils contain, because wet soils drown vegetation. b. Different plant types can add or remove nutrients within a soil, thereby changing the type of soil that is formed. c. Soil that forms on basalt bedrock will be the same as soil formed on granite bedrock because they are both igneous bedrocks. d. Soil that forms on steep slopes is thicker than soil formed on flat land because of the accumulation of sediment on slopes.

Answers

Answer: b. Different plant types can add or remove nutrients within a soil, thereby changing the type of soil that is formed.

Explanation:

Some plants require more a of particular nutrient than others and so will draw more of these nutrients from the soil whilst giving away some of the ones that they do not want. This is one of the reasons that some plants grow better in a particular area than not.

When these plants give or take away nutrients, they would be changing the type of nutrient composition of the soil and this is what makes crop rotation so effective.

In a paragraph of not more than 8 lines describe the reasons for the difference in the population density of South Africa and England.​

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Hey there! I'm happy to help!

Both South Africa and England have a similar populations. However, these countries have different population densities. Population density is how crowded the country is with people. South Africa is a much larger country in terms of its area while England has a smaller land area. If they have similar populations, but different amounts of space, one is going to have a higher population density. Since England has less space, it has a higher population density as there are more people in a smaller space. There is more land area in South Africa, so this naturally makes it less crowded.

Have a wonderful day and keep on learning! :D

Why do we see different shapes of moon ?

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Answer:

The phases change as the moon revolves around Earth, different portions of the moon's sunlit surface are visible from Earth. Thus, from the perspective of Earth, the appearance of the moon changes from night to night. Not only does the apparent shape of the moon change, its position in the sky also changes.

In 1980 there was growing concern that the protective ozone layer over the Antarctic might be decreasing and thereby allowing so much harmful ultraviolet radiation to reach the Earth that polar marine life would be damaged. Some government officials dismissed these concerns, since statistics indicated that global atmospheric ozone levels remained constant. The relevance of the evidence cited by the government officials in support of their position would be most seriously undermined if it were true that

Answers

Answer:

Even where the amount of atmospheric ozone is normal, some ultraviolet light reaches the Earth's Surface.

Explanation:

Before 1980 there was very little concern about atmospheric ozone decrease. Many plants and animals flourish in warm climates rather than in polar regions. The increase exposure to ultraviolet rays due to shift in atmospheric ozone has threatened marine life.

analisis lah perkembangan terbentuknya kepulauan indonesia

Answers

Answer:

Please write in English so I can help.

Explanation: I wanna help.

HELP, WILL MARK AS BRAINLIEST

Effects of the European Union system include all of the following EXCEPT

A)the removal of barriers to free trade for member states.

B)lower taxes and an increase in services for all member states.

C)the development of Europe as the world's wealthiest market.

D)opposition to immigrants from poorer regions of Europe, Africa, and Asia.

E)the increased use of English as the principal language.

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Answer:  I'd say it's D.

Explanation: Though immigration is a problem for the EU, I don't think opposition is the correct term since many countries still welcome immigrants from the poor countries and are trying to support them.

On the map below, #7 is marking which of the following countries?
A. Saudi Arabia
B. Iran
C. Kuwait
D. Iraq

Answers

Answer:

A. Saudi Arabia

Explanation:

a country located in the Middle East.

Number 7 marks the location of A. Saudi Arabia

Matriarchal" is best defined as a __________.
A.
pattern of ethnic settlements in Central Europe
B.
matrix of ethnic symbols engraved in an arch
C.
domination of a government or social group by females
D.
collection of materials used only by a particular ethnic group

Answers

Answer:

C is the answer C is the answer. C is the answer

C because that makes the most sense

which areas of Earth receive the greatest and the least solar irradiance?

Answers

Answer:

hope this helps

Explanation:

Earth receives different amounts of solar energy at different latitudes, with the most at the equator and the least at the poles

Answer: this is the answer

Explanation:

The regions closest to the equator receive the most direct sunlight because the light is arriving at an angle close to 0°. As a result, a lesser area is illuminated and so there is greater solar irradiance. The regions nearest to the poles receive sunlight at more of an angle, resulting in a larger area of illumination and therefore less solar irradiance.

Which organelle is responsible for transporting lipids in the cell?
A. nucleus
B. rough ER
C. golgi apparatus
D. mitochondrion

Answers

Answer:

the answer is B. ER ( endoplasmic reticulum)

Answer:

C) golgi apparatus

Explanation:

Golgi Apparatus also termed as Golgi Complex. It is a membrane-bound organelle, which is mainly composed of a series of flattened, stacked pouches called cisternae. This cell organelle is primarily responsible for transporting, modifying, and packaging proteins and lipid to targeted destinations

Use the drop-down menus to select the part of Earth best described by each phrase.

Answers

Answer:

inner core

Explanation:

inner core because it always penetrating other particles to be released out of the earth

(Q020) Identify the true statement. a. The geothermal gradient is the rate of change in pressure with depth in the Earth. b. The temperature at the Earth's center may almost equal the temperature of the Sun's surface. c. The calculated density at the Earth's center makes scientists almost certain that the inner core is composed of diamond. d. The pressure at the Earth's center is less than 300 times greater than normal atmospheric pressure.

Answers

Answer: b. The temperature at the Earth's center may almost equal the temperature of the Sun's surface.

Explanation:

The Earth's core is very very hot due to various factors such as heat from radioactive materials decaying and the heat the earth had when it was formed. It is estimated that the temperature here is around 5,200° C which means that it can melt even Tungsten.

This is almost equal to the surface temperature of the sun which is around 5,500° C.

in a volcanic eruption molten magma rocks, ash and gases come up through a) gate b) vent c) pipe d) drain​

Answers

Answer:

it come out throw vent ok

Mention the significance of Northern Plains​

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Answer:

Extremely fertile and good for crops,  rivers are navigable throughout the year,  flat land- good for roads and railways,  irrigational facilities, and for construction of H.E.P. Plants.

Explanation:

Northern Plains have fertile soil which is needed to grow crops. They are drained by rivers Ganga, Brahmaputra, Indus. To feed the country, Northern Plains are necessary.  

Place the following events in chronological order

Answers

Answer:

In chronological order means that we must put the events in the order in which they happened.

1. Jawaharlal Nehru is elected prime minister

2. India gains independence

3. A conflict breaks out at the Saikh GoldeN Temple

4. Indira Gandhi is assassinated

A conflict breaks out at the Saikh GoldeN Temple = 10 June 1984Indira Gandhi is assassinated = October 31, 1984India gains independence = August 15, 1947Jawaharlal Nehru is elected prime minister = August 15, 1947 (8.30 a.m)

Answer:

1. India gains independence

2.Jawaharlal Nehru is elected prime minister

3. A conflict breaks out at the Sikh Golden Temple

4. Indira Gandhi is assassinated

Explanation:

how were countries formed​

Answers

Answer:

Some were established as a result of geographic isolation, such as England. Others were created as the result of emigration, such as Australia, often displacing existing nations. And still others were created from the breakup of larger empires or from peace treaties, such as Croatia.Explanation:

2 quốc gia đứng đầu thế giới về xuất khẩu lúa gạo

Answers

Answer:

Ấn Độ và Việt Nam

Explanation:

Answer:

Ấn độ và thái lan

Explanation:

HELP PLEASE

In which of the following scenarios would using a GIS be helpful?
Ο Ο Ο
assessing the soil erosion risk within a watershed
providing navigation assistance to guide a lost driver to his destination
transcribing inaccurate historical data into accurate historical maps
calculating local time when crossing the International Date Line
analyzing the relationship between functional and formal regions

Answers

Answer:

providing navigation assistance to guide a lost driver to his destination

Explanation:

The scenario in which using a GIS would be helpful is when "providing navigation assistance to guide a lost driver to his destination."

This is because GIS (geographic information system) is a computer system that carried out many processes including getting, storing, checking, and presenting data related to different positions on Earth.

Hence, GIS can be used by different people to know their locations or their destination.

For example, GIS using GPS information in a car to know the current location and destinations of drivers in a specific area.

Please help me with these questions from AP Human Geography. (Take these questions seriously)

1. Identify and explain 2 examples of how India is becoming “Americanized”.

2. Identify and describe 2 examples of the positive economic and/or social effects of globalization on the world.

3. Identify and describe 2 examples of the negative economic and/or social effects of globalization on the world.

4. Explain the pattern of population growth from 1800-2011.

5. Describe the projected population for 2045 and explain why that number.

6. Identify and discuss 2 examples of issues faced by the world due to the size of the population.

7. Identify the physical and cultural characteristics of the world’s most typical person today vs. in 2030.

8. Define scale and identify three examples of scale.

9. Explain 2 examples of the impact that events can have on people’s lives worldwide.

10. Describe 2 examples of the positive and/or negative power maps can have when delivering information.

11. For 3 religions, identify 1 example of a holy site found in Jerusalem.

12. Explain the purpose of the Green Line.

13. Discuss 2 examples of how the United States’ decision to move its embassy from Tel Aviv to Jerusalem is significant.

14. Explain the issue of “food deserts”.

15. Describe the process in which Dollar Stores are built in towns and cities and how they contribute to food deserts.

16. Discuss 2 examples of the impact of living in food deserts in the United States.

17. Identify and describe the cultural and social causes of ‘gendercide’ [why is there such a preference for boys in particular cultures?]

18. Identify and describe 2 examples of the negative effects this skewed sex ratio has on countries.

19. Discuss the role that technology has played in INCREASING ‘gendercide’.

20. Describe Kurdistan.

21. Define Daesh and explain the impact it has had on Iraq.

22. Identify and describe the opposing ideas between Boston Sharbarzheri and Sami Hussein.

(I NEED THESE QUESTIONS ANSWERED BY TOMORROW FRIDAY JULY 30 AT 12pm)

Answers

Answer:

Sorry that this is coming in late...

1. Examples include fast foods, and more love marriages (arranged marriages, the norm)

2. Positive effects include more unity, and cultural exchanges

3. Less cultural diversity, More health problems (obesity due to fast food)

4. Growth has been exponential (very high population growth)

5. Projected population is (this is coming from online), ~9 billion people, due to exponential growth and better health care

6. Economic inequality, and basic food/water shortages

7. More diversity, less technological (as opposed to 2030)

8. Scale-A measuremnt measuring magnitude (how big something is), examples include a size scale, weight scale, and measuring scale

9. Politically and socially

10. Can influence public opinion, shape history (due to partition of India using maps)

11. Judaism-Wailing Wall, Christianity-Church of the Holy Selpchure, Islam-Dome of the Rock

12. Railine near Cleveland

13. Means further ties with Israel; alienization of the Palestinians and othe majority Islam countries

14. An issue due to no nutritious food in an area

15. Dollar stores don't contribute much to food

16. Less nutrition; malnutrition

17. Paternal cultures, religion

18. More gender inequality, less people to contribute to the gene pool

19. More social media propogating gendercide

20. A region of land with heavy ethnic ties to the Kurdish people, with land in the land straddling Turkey, Iraq, Iran, and Syria. This land has been source of heavy discontent and news. Syrian kurdish groups have propogated an "independent country" named Rojava.

21. It has led to poverty and islamic radicalization

22. I don't understand what you mean by "Sharbarzheri, Sami Hussein, you probably mean "Saddam Hussein"

Explanation:

My brain, books,etc.

*I wrote this on the fly because I was in a hurry.

Use of base.......? write important things

Answers

Answer:

What are the uses of Bases

Uses of Bases

1. Calcium Hydroxide (Slaked lime) [Ca(OH)2]

It is used to neutralize the acidity in soils.

It is an ingredient in whitewash and mortar.

It is a component of the Bordeaux mixture used for protecting agricultural crops from pests.

It is used in the preparation of dry mixes for painting and decorating.

2. Magnesium Hydroxide (Milk of magnesia) [Mg(OH)2]

It is used as an antacid or a laxative. It helps to correct excess acidity in the stomach.

Please mark me as the brainliest

Which of the following maps below is a satellite image of Egypt?
Map A
Map B
Map C
none of the above

Answers

Answer:

id say map A

Explanation:

Map A which was below shows the satellite image of Egypt.

An object that has been placed into orbit in space on purpose is known as a satellite or artificial satellite. There are several applications for satellites, including communication.

A satellite is a body that orbits a planet, star, or moon. For instance, the fact that Earth orbits the sun makes it a satellite. The moon is a satellite as well because it revolves around Earth. The term "satellite" typically refers to a device that is launched into space and orbits the Earth or another celestial body.

In addition to being the foundation of cable and network TV, satellites also deliver television signals directly to homes. These satellites transmit signals to smaller stations that transmit the signals locally over cables or the airways from a central station that produces programming.

Hence, option A is correct.

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made many items themselves.
A. Settlers
B. Farmers
C. Pioneers

Answers

Answer:

pioneers made items themselves.

I think Settlers because even though pioneers are the first ones to do something themselves, it doesn’t mean that they specifically ‘made many items themselves’. So its settlers.

Ocean surface currents Group of answer choices form counterclockwise circles in the northern hemisphere. flow smoothly, with few eddies. are found only in low- and mid-latitude areas. are influenced by the Earth's rotation.

Answers

Answer:

The correct answer is ''are influenced by the Earth's rotation.''

Explanation:

Ocean currents are the fastest and most constant part of ocean water. These flows are caused by the differences in temperature and salinity that the different seas and oceans of the world have, among other factors such as the rotation of the Earth. One of the forces that influences the movement of ocean currents is the rotational movement of planet Earth. Due to the effect called Coriolis force, it makes ocean waters rotate and flow in different directions according to their geographic location, for this reason, in the Equator, rotation has a lesser effect on the force of water movement. The further from the equator the waters are, the slower their movement will be, since the Earth rotates faster at the equator.

HELP!!! WILL MARK BRAINLIEST!!

Which are examples of climate’s impact on the natural character of a location?

SELECT ALL THAT APPLIES. NOT JUST ONE. MOVE ON IF YOU DON'T KNOW PLEASE THANK YOU!!

A. a year-long drought

B. solar radiation

C. the amount of total precipitation

D. accrued snowfalls in mountainous areas

Answers

Solar radiation is an example of climate’s impact on the natural character of a location. Thus option B is correct.

What is climate change ?

A long-term shifts in temperatures and weather patterns either by natural like changes in solar cycle or artificial level leads to climate change.

Artificial or man-made cause refers to burning fossil fuels which generates greenhouse gas and it act as a blanket covered over  the Earth by raising temperatures.

The two major greenhouse gases cause climate change includes carbon dioxide and methane.

These  gases comes from  gasoline use during car driving or coal for heating.

Deforestation also responsible for the release carbon dioxide where as Landfills for garbage are act as a  source of methane emissions.

Energy, transport, buildings, agriculture, industry and land are also the causative agents of climate change.

Thus option B is correct.

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What type of galaxy is described as having an elongated center and spiraling arms?
Barred spiral
Spiral
Irregular
Elliptical

Answers

Answer:

barred spiral

Explanation:

The galaxy which is described as having an elongated center and spiraling arms is a Barred spiral. Thus the correct answer is A.

What is Galaxy?

A galaxy is a large collection of planets, celestial bodies, gas, and particles. Gravity keeps a galaxy together. A big black hole also resides in the center of our galaxy, the Milky Way.

A spiral galaxy termed a barred spiral universe has a star-focused central bar structure. In almost two-thirds of spiral galaxies, streaks are present.

Stars no more revolve in circular orbits when a large barrel arises instead, the bar has bent the stars' orbits, which is causing them to move into more circular orbits that pass close to the center of the galaxy.

Therefore, option A Barred Spiral is the appropriate answer.

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Functions of peace keeping force ? Sheridan Company just began business and made the following four inventory purchases in June: June 1 144 units $ 952 June 10 184 units 1472 June 15 184 units 1564 June 28 144 units 1296 $ 5284 A physical count of merchandise inventory on June 30 reveals that there are 194 units on hand. Using the FIFO inventory method, the amount allocated to ending inventory for June is What is the approximate length of arc s on the circle below? Use 3.14 for Pi. Round your answer to the nearest tenth.-5.8 ft-6.3 ft-27.5 ft-69.1 ft HELP PLEASE SO I CAN MOVE ON find the measure of the indicated angle to the nearest degree For the equation, determine whether the equation is true for all, some, or no values of x.Explain how you know. Question 4 (2 marks)Justin works 14 hours at a normal pay rate of $24.80 per hour and 5 hours of overtime attime and a half. How much should he be paid?I809 wordsLEEnglish (Australia) 2) Select the best answer ( using past simple and past continuous ) a) Cindy _______ lifting weights _____ I ____ in to the gym a) Where/ is / get b) Was/is/get c) Was/when/got d) Was/when/get b) The accident _________ when Charlie was ______ a) Didnt Happen/ driving b) Didnt happened / driving c) Didnt happen/ drives d) Didnt happened / drives c) They ____________ when I_________ the door a) Was fight / open b) Were fight / opened c) Was fighting / open d) Were fighting / opened Express 1.2, 2.25, 3.5, 4.06 as a fraction in its simplest form answer the following true or false questionsMalaria is carried by a particular mosquito.t/fScalp ringworm is very contagious.t/fty [infinity]Substitute y(x)= 2 anx^n and the Maclaurin series for 6 sin3x into y' - 2xy = 6 sin 3x and equate the coefficients of like powers of x on both sides of the equation to n= 0. Find the first four nonzero terms in a power series expansion about x = 0 of a general n=0solution to the differential equation. ()= ___________ Find all three distinct roots for X =1. (two of them are complex mumber). And show that sum of all roots is zero. Question 9 of 20Which of the following is an example of juxtaposition?A. Creating a piece of art that most people won't understandB. Placing a red object next to a green object in a paintingC. Creating art that references earlier artists.D. Creating a piece of art that represents a historical eventSUBMIT In a survey of 850 students in a school, 90% reported having pets at home. If the margin of error is 3.4%, what is the interval that is likely to contain the exact percent of all people who have pets at home?Between 3.4% and 90%Between 90% and 93.4%Between 86.6% and 90%Between 86.6% and 93.4% The area of each square below is 1 square unit. In this excerpt, a reader can conclude that Lizzie is playful based primarily on her Dobles Corporation has provided the following data from its activity-based costing system:Activity Cost Pool Total Cost Total ActivityAssembly $228,060 18,000 mahcine hoursProcessing orders $34,068 1200 ordersInspection $125560 1720 inspection hoursThe company makes 420 units of product D28K a year, requiring a total of 460 machine-hours, 80 orders, and 10 inspection-hours per year. The product's direct materials cost is $48.96 per unit and its direct labor cost is $25.36 per unit.According to the activity-based costing system, the unit product cost of product D28K is closest to: a. $95.34 per unitb. $93.60 per unitc. $74.32 per unitd. $89.93 per unit Previous studies suggest that use of nicotine-replacement therapies and antidepressants can help people stop smoking. The New England Journal of Medicine published the results of a double-blind, placebo-controlled experiment to study the effect of nicotine patches and the antidepressant bupropion on quitting smoking. The target for quitting smoking was the 8th day of the experiment.In this experiment researchers randomly assigned smokers to treatments. Of the 162 smokers taking a placebo, 28 stopped smoking by the 8th day. Of the 272 smokers taking only the antidepressant buproprion, 82 stopped smoking by the 8th day. Calculate the 99% confidence interval to estimate the treatment effect of buproprion (placebo-treatment). (The standard error is about 0.0407. Use critical value z = 2.576.)( ), ( )Round your answer to three decimal places. Put lower bound in the first box and upper bound in the second box. Steel railway tracks are laid at 8oC. What size of expansion gap are needed 10m long rail sections if the ambient temperature varies from -10oC to 50oC? [Linear expansivity of steel = 12 x] The total cost of 2 bracelets and 3 necklaces is $15.50. The total cost of 4 bracelets and 1 necklace is $13.50. Let b represent the cost of each bracelet and n represent the cost of each necklace. This situation can be represented by the following system of equations.{2b+3n=15.504b+n=13.50What is the cost of one bracelet?A $2.50B $7.75C $5.00D $3.50 Which situation is best represented using a negative integer?