Scientists infer that Earth's outer core is liquid based on their studies of

a) earthquake waves
b) magnetic polarity reversals
c) lithospheric heat flow-
d) magma

Answers

Answer 1

Answer:

a) earthquake waves

Explanation:

Evidence from earthquake waves proves that the earth's outer core is liquid.

We have two broad types of earthquake waves:

Body waves

Surface waves

The body waves travels within the earth and are of two types:

P-waves

S-waves

The surface waves accompanies an earthquake and it moves on the surface. The two types of surface waves are:

Love waves

Rayleigh waves

We use body waves in seismic investigation of the earth due to their unique properties.

P-waves are primary waves that can move through any medium. S-waves or shear waves cannot propagate through liquids and gases as those material cannot be sheared.

If the outer outer core is solid, both P and S-waves would easily pass through. From studies, it has been shown that S-waves are cut off in the region of the outer core and they reappear in the inner core. P-waves pass through both outer and inner core. This proves that the composition of the outer core is in a molten/liquid phase.


Related Questions

The probability of a certain spinner landing on yellow is 2/3. If you spin this spinner 45 times
how many times would you expect the spinner to land on yellow? Explain how you determined your answer.​

Answers

The answer is 30. Since it’s 2/3 chance, you’d want to divide 45 by 3 which give you 15. Than you subtract 45-15 and you get the answer of 30.

What process is responsible for creating magnetic changes along mid-ocean ridges? A. Ridge push B. Slab pull C. Seafloor spreading D. Reversal of Earth's magnetic field

Answers

Answer:

D. Reversal of Earth's magnetic field

Explanation:

The earth's magnetic field changes over time and this causes changes in the direction of magnetization of magnetic elements or minerals in rocks.

Our magnetic field is widely believed to originate from activities within the outer core where molten iron and nickel moves. The flow of these molten elements results in the production of the magnetic signatures on earth surface.

Some elements and minerals within rocks are capable of recording the direction of magnetic fields at a period in time. Before magma cools, such minerals in these rocks aligns their poles to that of the prevailing direction of the earths magnetic field. This is how the magnetic changes at the mid-oceanic ridges are recorded.

Answer:

The process of seafloor spreading is responsible for "creating magnetic changes" along mid-ocean ridges.

Explanation:

When "seafloor spreading" occurs along the mid-oceanic ridges, it results in a drastic splitting of the oceanic floor over a large area. This in return changes the orientation of the predominant magnetic fields and the intensity of their strength in the region. The mid-oceanic ridges are majorly constituted of solidified lava which is rich in iron. The changes that occur in the local magnetic fields due to seafloor spreading thus create magnetic changes along the mid-oceanic ridges.

Which process is used to locate the epicenter of an earthquake?

A. GPS measurements
B. Refraction
C. Triangulation
D. Forecasting

Answers

Answer: Triangulation is used to locate the epicenter of an earthquake.

Explanation:

ANSWER:

Triangulation is the process used to locate the epicenter of an earthquake.

EXPLANATION:

Triangulation is a process in which dimension is tracked, the network of triangles is measured and traced. This step is done in order to measure the distance and relative position of center which covers over the total area. This process or procedure is used by many people for various use. Triangulation is used by people for rivalry or to male people quarrel among each other .

Ten years ago, only 50 lions lived on a small savannah in Africa. Now, there are over 200 lions living in the same area. If the lions continue to live on the savannah, they will die prematurely because
A) a drought will kill the lions.
B) there will not be enough food and water.
Eliminate
C) the lions will begin fighting with each other.
D) the hunters will find out about all of the lions.

Answers

If the lions should continue staying in this Savannah they would die because there will not be enough food and water.

The reason why the lions would die

These lions are going to die due to the fact that there would be a competition of resources.

The area was for 50 lions initially, now that they are 200, they would have less food because it cannot carry that number.

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In two paragrahs write why you think roads should not be built in the rainforest
Pease hurry!!!!

Answers

Answer:

I am not going to write the two paragraphs however here are some points to consider:

- Deforestation

- Biological impact by fragmentation of habitats

- Promotes further deforestation by enabling access

- Promotes oil extraction which has negative environment impacts because waste water is often not managed properly

Answer:

Deforestation on rainforests and other natural environments can have a devastating effect on the whole world. First, it leads to the loss of many animal and plant species, decreasing the biodiversity that our planet enjoys. It can also lead to the degradation of soil and to erosion, as trees and plants usually hold the ground in place and provide necessary nutrients to it. Deforestation also has a negative effect on climate change, as trees are able to absorbe an enormous amount of greenhouse gas emissions. Without them,  the greenhouse effect is amplified, worsening climate change.

Explanation:

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo?

Answers

Answer:

Volcanic activity

Explanation:

it spews greenhouse gases, such as carbon dioxide, into the atmosphere. These gases reduce albedo because they do not allow particular wavelengths of light to escape into space after hitting the earth’s surface. This is how they cause global warming that results in climate change.

Answer: ice-albedo feedback.

Explanation:

Ice-albedo feedback can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo.

What does Justin need to do to head north? turn left onto Maple St. make a sharp turn onto Elm St. make a U-turn on Oak St. turn right onto Pine St.

Answers

Answer:

Turn Right on Pine St.

Explanation:

He is currently heading West, and if the image attached is what you are referring to, then you can see going West is going up Oak Street.

So if West is going up Oak street, then going to the right would be north.

The orientation of the map would be:

             W

S                            N

              E

So turning right onto Pine Street would take him north-bound.

Approximately, how many lakes does Texas have? a. 100 b. 150 c. 200 d. 250

Answers

c. 200 i think... (there are around 183 reservoirs in Texas)

Answer:

200 is the correct answer

Explanation:

Why are a variety of instruments needed to measure change in the climate system?

a. A different type of instrument is needed for each different climate.

b. The climate system involves a number of different factors that are measured differently.

c. Climate is determined over a number of years, rather than a short period of time.

d. Different areas have developed different instruments to measure climate change.

Answers

Answer:

B. The climate system involves a number of different factors that are measured differently

Explanation:

Answer:

The answer is B!

Explanation:

edge 2022

Benny and Alice are describing the property of ___________, which is often used to identify specific mineral families. A) streak B) hardness C) cleavage D) specific gravity

Answers

Answer:

Benny and Alice are describing the property of hardness, which is often used to identify specific mineral families.

Explanation:

The properties like streak, cleavage, luster, specific gravity, crystal habit, fracture, and color that of minerals do not make specific families of minerals based on that particular property. On the other hand, the hardness of the minerals is used to identify them with their families depending on how hard the mineral is. The metallic minerals are usually harder than rocky minerals.

Do u get Bitesize in America, India, Australia and China?

Answers

Yes you do get it but u have to type www.bitesize.co.uk

2. Why is open pit mining so devastating to the environment?
A. It exposes dangerous chemicals buried in the earth's crust.
B. It releases a lot of carbon dioxide into the air.
C. It causes massive erosion of sand.
D. It completely removes any available topsoil.​

Answers

Answer:

D. It completely removes any available topsoil.​

Explanation:

Open pit mining strips off the top layer of the soil in order to access near surface mineral deposits. Most near surface deposits are usually rock aggregates, coal, copper etc.

In order, to access these minerals, large amount of earth must be removed by earth moving machines.

Open pit mining greatly unsettles the ecosystem in mining regions and it leaves the surface bare and not suitable for agricultural activities.

Open pit mining so devastating to the environment completely removes any available topsoil.​ Thus, option D is correct.

Large volumes of heavy metal-containing dust will be produced by an open pit mine, and the disposal of toxic waste in pursuing ponds will have an effect on the ecosystem and drinking water supplies when they appear on the topsoil.

Forest loss, sedimentation, contamination of adjacent wetlands and stream systems, alteration of soil profiles, and a boost in noise level are just a few of the environmental effects that may result from the exploration, building, operation, and cost of living. Therefore, option D is correct.

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match the correct term with the columns of the geologic time scale

1. period
2. era
3. epoch
4. eon

a. ?
d. ?
b. ?
c. ?

please help me

Answers

Final answer:

In the geologic time scale, eon (4) is the largest division, era (2) is a smaller division within an eon, period (1) is a division within an era and epoch (3) is the smallest division within a period.

Explanation:

In the Geologic Time Scale, which represents crucial periods in the Earth's History, the terms eon, era, period, and epoch refer to different time lengths with an eon being the longest and an epoch being the shortest.

Eon (4) is the largest division of geologic time, typically lasting billions of years. It consists of multiple eras. It's like a great grandparent in the Earth's history.Era (2) is the next division which lasts millions to billions of years. It's made up of multiple periods. If an eon was a whole story, an era would be a chapter of it. Period (1) is further short division comprising millions of years. Each period is unique owing to the specific developments and life forms that existed at the time. It's like a section within a chapter.Epoch (3) is the smallest division lasting tens of thousands to millions of years. It's the finer details or events in the section of the chapter.

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Two states are in constant conflict with one another. Which type of boundaries are these states MOST likely to have? (1 point)

I. Geometric boundaries
II. Relic boundaries
III. Subsequent boundaries
IV. Superimposed boundaries

I only

II only

I and III

I and IV

II, III, and IV

Answers

Answer:

1 and 4only.

Explanation:

PLEASE MARK AS BRAINLIEST

ANSWER:

Geometric boundaries and Superimposed boundaries (I and iv) are two types of boundaries which are in constant conflict with one another.

EXPLANATION:

Superimposed boundaries is known as the boundary which has been taken forcefully taken by foreigner or conquering people. Geometric boundaries are defined as the geometric border or the circumference of a country or land which originates with arcs and holes respectively to the nature of land. Example of geometric boundaries can be taken as the Canadian/American border along the forty-nine parallel.

28.
The
is Earth's largest
depository of carbon.
A. lithosphere
B. hydrosphere
C. atmosphere
D. biosphere

Answers

C

I hope this helps!

Mark me as brainliest!

Around 80% of India’s population practices which religion

Answers

80% of India’s population practices the religion of Hinduism. While 14% adheres to Islam, 2% adheres to Christianity, and 1.7% adheres to Sikhism.

Hinduism is your answer

Which of the following is an example of a sedimentary rock?

Granite
Limestone
Marble
Slate

Answers

Limestone is a sedimentary rock

Answer:

limestone

Explanation:

What religion is practiced by most people in North Africa?
A.) Catholicism
B.) Islam
C.) Judaism
D.) Hinduism

Answers

Christianity came first to the continent of Africa in the 1st or early 2nd century AD. Oral tradition says the first Muslims appeared while the prophet Mohammed was still alive (he died in 632). Thus both religions have been on the continent of Africa for over 1,300 years.

Islam is the religion practiced by most of the people in North Africa.

Explanation:

The influence of Islamic is very significant in the region of North Africa. A major part of the world of Muslims is in North Africa. Most of the zones in the history of North Africa that ranges from the Arab Berber to Ottoman occupation were affected by the African Transition Zone or the Sahel.  

The result was the overlapping North African neighbors with the modern Africa nation states. Those have the cultural similarities and they are historical in nature. The region of North Africa is highly related with the region of West Asia in the realm of geopolitics that tends to form a region of Middle East North Africa in the present day.

In temperate zones, in which direction do winds blow?
east to west
west to east
north to south
south to north

Answers

Answer:

west to east- second choice

Carefully study the map above. Which of the following cities is most likely to have a maquiladora?
A.
El Paso
B.
Brownsville
C.
Nueva Laredo
D.
Calexico

Answers

Answer:

The correct answer is Nuevo Laredo

Explanation: Nuevo Laredo is a Mexican border town that would be able to secure the products tariff free from the United States, assemble the product using workers who are paid very little, then return the finished product back to the United States for a large profit for the manufacturer-which is the definition of a maquiladora

Answer:

C.

Nueva Laredo

Explanation:

What is the International Date Line? Describe its geographic location. Why doesn't it follow a straight line? Why do we need it?

Answers

Answers:

1. What is the International Date Line?

It is a superficial imaginary line drawn on the Pacific Ocean and very close to the [tex]180\°[/tex] meridian. It was devised by Sir Sandford Fleming in 1879 in order to maintain a uniform time system.

So, according to the location to this meridian, the date is changed in a day, as follows:

- When we go from the Western Hemisphere to the Easter Hemisphere in the [tex]180\°[/tex] meridian, we have to add one day.

-When we pass in the opposite direction, we have to delay one day.

2. Describe its geographic location.

The International Date Line is located in the Pacific Ocean. This area and this [tex]180\°[/tex]  meridian was chosen because it is a region with almost depopulated areas (very few inhabitants), so it does not make it difficult to maintain any local time.

However, a part of this meridian passes through the Bering Strait between Alaska and Siberia, causing both sides of the Strait to have different dates.

3. Why doesn't it follow a straight line?

Although the international date line originates at the North Pole and extends the length of the [tex]180\°[/tex] meridian, it deviates from this initial length  many times.

This is due to geopolitical reasons, in order to maintain a normal standard for changing dates in aviation and maritime trips at the time of crossing the line.

4. Why do we need it?

Although countries are not oblied to use the international date line as the standard on configuration dates, their purpose is mainly to avoid overlapping dates.

In addition, this line is necessary to ensure that the actual calendar and dates are coordinated and in order to have an understandable synchronization in world time.

Sample Response:

The International Date Line serves as a beginning and ending point for the world’s time zones. The line moves in jagged directions through the Pacific Ocean in order to keep certain island nations together. That way, a grouping of islands wouldn’t experience separate days despite being near each other! The International Date Line helps us to organize our global measurement of time.

Explanation:

Have a good day

When the population of organisms in an environment increases, what inevitably happens to the population growth rate? 

      A. Continues growing exponentially  B. Continues growing logistically  C. Changes from exponential to logistic growth  D. Changes from logistic to exponential growth​

Answers

Answer:

C. Changes from exponential to logistic growth

Explanation:

If the environment allows it, then a population of organisms will grow exponentially to a certain point. The main reason why a population of organisms can have such a growth is the lack of competition, lack of predators, and more then enough food sources. That kind of growth can not last forever though and there is a limit. The population will gradually switch from exponential growth to logistic growth because the food sources are limited, and once the population nears to optimal number it has to decrease its growth in order to not come in a situation to starve to death because of too much internal competition.

Answer:

C

Explanation:

9. Which of the following is not considered a result of the movement of
tectonic plates?
a. Earthquakes
b. Mountain ranges
c. Increased volcanic activity
d. Karst topography

Answers

The correct answer is

D. Karst topography

Final answer:

Karst topography is not a result of tectonic plate movement but is formed by the dissolution of soluble rocks. Earthquakes, mountain ranges, and increased volcanic activity are all caused by the movement and interaction of tectonic plates.

Explanation:

The question asks which of the given options is not a result of the movement of tectonic plates. Option D, karst topography, is the correct answer because it is a type of landscape shaped primarily by the dissolution of soluble rocks such as limestone, dolomite, and gypsum, rather than tectonic plate movement. In contrast, earthquakes (Option A), mountain ranges (Option B), and increased volcanic activity (Option C) are direct consequences of the movement of tectonic plates.

Earthquakes occur as the earth's crust consists of a number of separate plates that move and interact at their boundaries. Mountain building is also a result of tectonic plate activity, particularly at convergent boundaries where plates collide. Volcanic eruptions are frequent at both converging and diverging plate boundaries where the earth's lithosphere is either being pushed together or pulled apart, and molten rock can surface.

Use the map and your knowledge to answer the question that follows.

Answers

Answer:

I would say either the UK or Spain

Explanation:

For one thing, Sweden is barely on there. Can't be Portugal, it doesn't have dark red on it. So it leaves the last two, so maybe just choose the UK. I think it has slightly more.

Modern architecture was inspired by the Roman Colosseum by using design elements found in their A. houses. B. cathedrals. C. stadiums. D. schools.

Answers

Answer:

C- stadium

Explanation:

The Roman Colosseum is a stadium

Final answer:

The design elements of the Roman Colosseum have prominently influenced the architecture of modern stadiums, where its legacy is evident in their functional layouts designed to host large public gatherings.

Explanation:

The Roman Colosseum, known for being an iconic symbol of Ancient Rome's architectural prowess, has indeed inspired modern architecture in several ways. When considering the design elements found in the Colosseum, it can be seen that its influence has carried over predominantly into modern stadiums. Option C

The Colosseum was designed for large public gatherings, showcasing advancements in concrete construction and the architectural focus on creating vast interior spaces without the need for many supports, thereby significantly influencing the design of contemporary large-scale public venues.

Notably, modern stadiums reflect the Colosseum’s legacy through their circular or oval layouts, tiered seating, and the emphasis on providing unobstructed views for spectators. This approach emphasizes not only the structure's capacity but also the functional requirement of accommodating a large number of people efficiently. The Colosseum's design, which allowed for tens of thousands of spectators to enjoy events comfortably, remains a foundational principle in modern stadium architecture.

Name all the phases in a moon.​

Answers

Answer:

New moon

Waxing Crescent

First Quarter

Waxing Gibbous

Full moon

Waning Gibbous

Third Quarter

Waning Crescent

Explanation:

What can be inferred from the shape of the continents?
The continents have always been in their current positions
The continents were once al one and mass that broke apart
The continents were once much larger before flooded by the oceans
The shape has no pattern from the extreme coasta erosion​

Answers

Answer: The continents were once all one land mass that broke apart.

If you have ever looked at a map of the Atlantic Ocean, you have probably noticed that the coastlines of Africa and South America seem to fit together like pieces of a jigsaw puzzle. This phenomenon proves that the continents were once a vast landmass that broke apart.

The locations of most early civilizations all shared certain physical characteristics that allowed permanent settlements to develop. These characteristics included
A.
consistent water level in rivers and a humid climate.
B.
annual heavy snowmelt and short winters.
C.
annual flooding of rivers and a warm climate.
D.
constant heavy rainfall and short summers.

Answers

C I hope it right ;)

Final answer:

Early civilizations typically developed in areas with annual flooding of rivers and a warm climate, which supported agriculture and the growth of large settled populations. This is represented by Choice C in the question.

Explanation:

The physical characteristics that allowed for the development of early civilizations are closely tied to geographical and environmental conditions favorable for agriculture, as ancient cities typically sprang up in regions where there were reliable water sources and fertile soil conducive to farming. Most early civilizations emerged along river valleys because the annual flooding of rivers brought nutrient-rich silt that enriched the farmlands, leading to abundant harvests and stable food supplies. This phenomenon, combined with a warm climate that extended growing seasons, was crucial for supporting large, sedentary populations and the subsequent development of complex societies.

The correct answer to the question is annual flooding of rivers and a warm climate, which corresponds to Choice C. Rivers like the Nile, Tigris, Euphrates, and Yellow River played significant roles in the growth of civilizations such as Egypt and Mesopotamia. They provided not only the water necessary for irrigation but also facilitated the development of trade and transportation networks. This unique relation between humans and their environment demonstrates how crucial geographical factors were in shaping the destiny of early human settlements.

Which of the following is/are used to classify a star based on its temperature and luminosity?

A. Line spectra
B. Blackbody spectrum
C. Parallax measurements
D. Hertzsprung-Russell diagram

Answers

Answer:

D. Hertzsprung-Russell Diagram

Explanation:

The Hertzspring-Russel Diagram or HR-Diagram is used to study the evolution of stars. It plots stars depending on the temperature against luminosity. Stars go through different changes depending on its mass at the beginning. These changes occurs in stages and each stage is marked by a change in temperature and luminosity.

Answer: Hertzsprung-Russell diagram.

Explanation:

Match the vocabulary word with its meaning.

Answers

Final answer:

This question pertains to an English language practice exercise where students match vocabulary words to their meanings, look up definitions for Vocabulary Previews, and choose correctly spelled words in Review Questions.

Explanation:

The task of matching vocabulary words to their meanings is a common practice exercise in English language learning. It involves identifying the correct definition of a word from a list of possible meanings. Typically, students are provided with a list of vocabulary words on the left and their respective definitions on the right. The exercise enhances understanding of new terms and strengthens language acquisition skills. To complete this exercise, students usually write the letter that corresponds to the correct meaning next to the word.

For a Vocabulary Preview, students are encouraged to look up definitions and translations of new words to gain familiarity before discussing them with their instructor and classmates. This approach is critical in building vocabulary knowledge. Moreover, discussion exercises that involve identifying meaning relations and providing linguistic evidence help deepen the comprehension of word usage and semantics.

The Review Questions section often includes tasks such as choosing words with the correct spelling, which may not be directly related to the vocabulary table provided in the exercise. This encourages students to utilize a dictionary to learn the accurate spelling of words they encounter, further facilitating language learning.

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A van travels 320 miles on 16 gallons of gas. Find how many gallons the van needs to travel 420 miles 6. I need help with question in the attached picture! French True or False pls help Which of the diagrams shows a reflection of the figure above?Help ASAP PLZ HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPHow can you find the missing side length of a cube if you know the cubes volume? What organization planned to create separate Jewish and Arab states in Palestine following World War II? YOu should slow down or stop if you experience which of the following? A. You feel light headed B. You feel dizzy C. You feel exhausted D. All of the above Help! We need to do the tasks that are circled! Thank you very much! PLEASE HELPP!Which of the following describes how the circulatory and excretory systems work together to help maintain homeostasis? A.By delivering oxygen to cellsB. By having cells that fight infections C.By delivering nutrients from food to cellsD. By carrying waste to the kidneys A plane intersects both nappes of a double-napped cone but does not go through the vertex of the cone.What conic section is formed?hyperbolaparabolaellipsecircle During which stage of sedimentary rock formation do minerals crystallize at points of contact with other clasts? A. Deposition B. Cementation C. Transportation D. Burial Miriam reduced a square photo by cutting 3 inches away from the length and the width so it will fit in her photo album. The area of the reduced photo is 64 square inches. In the equation (x 3)2 = 64, x represents the side measure of the original photo.What were the dimensions of the original photo?11 inches by 11 inches5 inches by 5 inches3 + inches by 3 + inches3 inches by 3 inches What molecule contains an organism's genetic material, passed down from parents to their offspring? A. Protein B. Lipid C. DNA D. RNA What is the role of tRNA molecules? x and y intercepts if y=3(x-1)^2-12 what is independence of latin american countries What will happen if the Capulets and Montagues disturbthe peace again?They will be banished from Verona.They will have to pay a fine.They will be punished by death.They will have to have a duel. Read the excerpt from "A Quilt of a Country."America is an improbable idea. A mongrel nation built of ever-changing disparate parts, it is held together by a notion, the notion that all men are created equal, though everyone knows that most men consider themselves better than someone. "Of all the nations in the world, the United States was built in nobody's image," the historian Daniel Boorstin wrote. That's because it was built of bits and pieces that seem discordant, like the crazy quilts that have been one of its great folk-art forms, velvet and calico and checks and brocades. Out of many, one. That is the ideal.Which statement best explains the role context plays in better understanding this excerpt?Quindlen uses the context of American diversity to help readers rethink the concept of American identity and understand that she supports the idea of unity among Americans of all cultures.Understanding that Quindlen is the descendant of immigrants helps the reader realize that she supports the idea that some cultures are naturally better than others.Quindlen uses the context of living in the United States during the 9/11 attacks to help the reader realize that she feels that unity among all Americans is impossible to achieve.Understanding that Quindlen is an immigrant from another country helps readers realize that she understands societies like the United States more than most people. cuales son las relaciones en los conceptos de crisis del petroleo y transnacionalizacion de las empresas? What problem was facing the people of Rome? a lack of entertainment a lack of food a lack of water a lack of influence in government (A. A lack of entering (B. A lack of food (c. A lack of water (d. A lack of influence in goverment Steam Workshop Downloader