Answer the following questions about divergent boundaries, such as the Mid-Atlantic Ridge, and their associated lavas:

a. Divergent boundaries are characterized by outpourings of what type of lava: andesitic, basaltic lava, or rhyolitic?
b. What is the source of these lavas?
c. What causes the source rocks to melt?

Answers

Answer 1

Answer:

a) divergent boundaries are the plates move away from each other. the type of lava is basaltic

b) magma

c) convection current cause the rocks to melt


Related Questions

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the oldest unit in the center, the underlying structure is a(n) ________.

Answers

Answer:

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the oldest unit in the center, the underlying structure is a syncline.

After it experiences a "helium flash" a star like the Sun will have a brief period of stability, fusing helium into carbon (and sometimes oxygen). During this brief stable stage, the star:_________a. Increases tremendously in luminosity.b. Gets to be even larger in diameter than it was as a red giant.c. Returns to the position on the H-R diagram that the star had in its main-sequence stage.d. Is able to fuse many of the heaviest elements (such as iron and gold) in its superhot core.e. None of the answers provided is the correct answer

Answers

Answer:

a. Increases tremendously in luminosity

Explanation:

The helium flash is a thermal nuclear fusion with large quantities of helium gas into carbon. During the red giant phase, the sun is predicted to have a flash 1.2 billion after it leaves the main sequence and this helium fusion cannot be produced by the low mass stars. The sun in this stage will burn out or run out of its fuel and eventually will lead to gravitational collapse.  The star being to shrink in size and core starts to collapse.

What is the purpose of this map?

to show topographical information

to show boundaries between countries

to show information about weather and temperature

to show economic differences

Answers

Answer:

to show information about weather and temperature

Answer:

to show information about weather and temperature

Explanation:

Which of the following descriptions summarizes the political structure of the Bedouins?

Question 9 options:

sedentary groups controlled by foreign powers


herders with tribal leaders but no formal government


small groups headed by emirs, or Arab rulers


nomadic groups governed by the Sa'ud family

Answers

Answer:

Herders with tribal leaders but no formal government

Explanation:

Bedouins primarily made their livelyhood herding animals such as goats, sheep, and camels. They were broken up into tribes who were each governed by a tribal leader called a Sheikh.

Answer:

Herders with tribal leaders but no formal government

Explanation:

What does the Vishnu Schist tell you about the history of the Grand Canyon prior to the formation of the canyon itself?

Answers

Answer:

These rocks were part of the oceanic trench.

Explanation:

The Vishnu schist is a part of the Vishu complex of exposed basement rocks and is originally part of the deep ocean trench and was substantially overloaded by the sediments of the Brahma schist some 1.75 billion years ago. Being metamorphic in nature the oldest rocks of the canyon have granite and suggest they have been subjected to intense heat and pressure.

What 5 cities are south of 30N and west of 15 East

Answers

Answer:

The five cities are Brazzaville and the Kinshasa, Luanda, the Libreville, and the Monrovia.

Explanation:

Based on the population density maps above, what can be inferred about Britain’s migration patterns? A. The population of Britain was greater in 1701 than in 1911. B. Britain was more densely populated in 1911 than in 1701. C. Fewer people lived in urban areas in 1911 than in 1701. D. The northern part of the island was more densely populated than the southern part in 1701.

Answers

Answer: B. Britain was more densely populated in 1911 than in 1701.

Explanation:

In the map below, the darker colors are used to denote a heavier population density. Looking the map you will notice that there are more darker colors in 1911 then in 1701 which would mean that Britain as a whole was more densely populated in 1911 than in 1701.

This was down to Britain becoming a World Military and Economic power. These two factors meant that more prosperity was due to Britain which enabled it to reduce the mortality rate of its people in the so called Mortality Revolution.

Compare and contrast a perceptual region and a formal region

Answers

Answer:

A nation is a formal region; it is a particular political entity and may have a common language. ... Perceptual regions reflect people's feelings about certain areas; in the United States, southern California and the South each have a certain image. They are perceptual regions.

Coal was created through the decomposition of ancient ___________. A. trees B. fish C. bacteria D. animals

Answers

the answer is D because it just is

Answer:

a. Trees

Explanation:

Low-key just think about charcoal in minecraft and its kinda the same...

Mount Shasta and Mount Lassen in the far northeastern part of California, were formed by what process

Answers

Answer:

Subduction.

Explanation:

Mount Shasta is a potentially active volcano in the southern end of the cascade range ad an has a height of 14,179 feet. Being a stratovolcano its a subduction process between the Juan de Fuca plate beneath the North American plate.  The Lassen peak is surrounded by an active volcano in the cascade range of the western united states and lies in the volcanic arc. This region is also affected by the Cascadia subduction zone.

Which continent sees the sun first, North America or South America?

Answers

Answer:

south America sees it first

What is a quokka and what animal family does it belong to

Answers

A quokka is an herbivore and a member of the macropod family found mainly in Australia. Females have a pouch on their belly for babies. They look like a cross between a bear and a kangaroo. Many people love this animal because they look like they are always smiling. The population of quokkas is decreasing because of predators, habitat loss, and fires.

Answer:

the quokka belongs to the macropods family.

Explanation:

Facts:

Also known as short-tailed scrub wallabyAbout the size of a domestic cat

What character motivation advances the plot?
This motivation moves the rising action toward what
Event?

Answers

Answer:

1 the vizir's envy

2 the Kong rebuking the vizir

Explanation:

Answer:

1. The vizirs envy

2. The King rebuking the vizir

Explanation:

I just did it on edge.

You live in the northeast US, and over the course of a particular winter, you experienced frequent snow, poor weather, and well below normal temperatures. Your friend, who lives in the southwest US, experienced mostly fair weather and average (mild) temperatures through that same winter. Based on the discussion of mid-latitude cyclone formation in chapter 12, explain why this pattern of winter weather in each location would likely persist every winter. View keyboard shortcuts 12pt Paragraph

Answers

Answer:

otro tepdopr ayuard a

Explanation:

graas or ploasc untos

pi

Answer:

climate

Explanation:

Bioplastics made from corn grown using industrialized agricultural methods would have a smaller ecological footprint that bioplastics made from native prairie switchgrass.
A. True
B. False

Answers

Answer:

A this is true

Explanation:

i had to answer this question and i got it right

Bioplastics made from corn grown using industrialized agricultural methods would have a smaller ecological footprint that bioplastics made from native prairie switchgrass.

Thus, the correct option A.

What are Bioplastics?

Plastics made from renewable biomass sources, such as plant fats and oils, maize starch, straw, woodchips, sawdust, and recovered food waste, are known as bioplastics.

Some bioplastics are made by processing polysaccharides (such as starch, cellulose, chitosan, and alginate) and proteins (such as soy protein, gluten, and gelatin) directly from natural biopolymers.

Other bioplastics are made chemically from sugar derivatives (such as lactic acid) and lipids (such as oils and fats) from either plants or animals, or biologically by fermentation of sugars or lipids.

Contrarily, conventional plastics like fossil-fuel plastics, often known as petro-based polymers, are made from natural gas or petroleum.

Bioplastics have the advantage of not requiring fossil fuel as a raw material, which is a limited and unevenly distributed resource with political and environmental implications.

Learn more about Bioplastics, here

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20. How is a degree of longitude or latitude further subdivided? Give an example,

Answers

Answer:

Degrees of latitude and longitude can be further subdivided into minutes and

seconds (units of arc, not time): There are 60 minutes (') per degree, and 60

seconds (") per minute. For example, a coordinate might be written 65° 32' 15". ...

At the equator, it is approximately 69 miles, the same size as a degree of latitude.

For finding locations on the surface of the Earth, measurement lines called latitude and longitude are utilized. The degrees of a circle is used to express the angular measurements. The 360° that makes up a circle. 60 minutes can be divided into each degree, and 60 seconds can be divided into each minute.

What is the difference between longitude and latitude?

The earth's center serves as the origin for measuring both longitude and latitude. Oriented to the east, a longitude is an angle measured from the prime meridian. Angular distance from the equator is measured by latitude (latitudes to the south are negative).

Locating locations on the surface of the Earth requires the use of measuring lines called latitude and longitude. They are angular measurements that are quantified in terms of circle degrees. A complete circle has 360°. There are 60 minutes in each degree, and there are 60 seconds in each minute.

Thus, Since latitude and longitude are angular distances, they are expressed in degrees (°). 60 minutes (') and 60 seconds (') are further separated into each degree.

Learn more about longitude or latitude here:

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what is Ecosystem? ​

Answers

Answer:

An ecosystem is living and non living organisms in conjunction with each other as a system.

Ecosystem is a biological community of interacting organisms and their physical environment.

During the ENSO cycle, in the Nino 3.4 monitoring region of the Equatorial Pacific, the typical sea surface temperature departure from normal is 6° C or more.

a. True
b. False

Answers

Answer:

b. False

Explanation:

During the ENSO cycle, in the Nino 3.4 monitoring region of the Equatorial Pacific, the variation in normal sea surface temperature is 3 ° C or less. This is because in the tropical pacific the surface water varies between 1 - 3ºC, which makes it impossible for the typical variation of the normal sea surface temperature to be 6 ° C or more.

what would happen to the earth without natural greenhouse effect​

Answers

Answer:

Without naturally occurring greenhouse gasses the Earth would turn very cold.    

Explanation:

Greenhouse gasses lock in heat so without them all of the heat from the sun would be released into space.

Which depositional landform is created at the ultimate base level (or terminus!) of a stream, where sediment is deposited into the sea?

Answers

Answer:

Peneplain.

Explanation:

The base level is the lower limit of the erosional process and the ultimate base level is the plains that result from the projection of sea level under the landmass. This process of erosion creates a peneplain. The base level is dynamic and changes according to the following factors as sea-level changes, tectonic factors, river captures, and sedimentation. Peneplinasare low featureless deposits that are created by the terminus of the dream where the sediments are merged with the sea.

New Faces, New Places: Mastery Test
Select the correct answer.
Which personality trait best fits the description?
Lupe estudia mucho y toma cursos avanzados en matemáticas y literatura.
A.
timida
В.
amable
C
estudiosa​

Answers

Answer: C. estudiosa​

Explanation;

The text mentions that Lupe studies very hard and even takes advanced courses in Math and Literature. The best personality trait to describe him is therefore Estudiosa which means Studious.

A Studious person is one who studies quite a lot in the pursuit of academic excellence. They spend a bulk of their time reading books as well in a bid to gain knowledge. Such people feel comfort when they read.  

What is solar system​

Answers

A solar system is a group of planets that orbit around a sun (giant burning star) that has enough gravity to keep the planets from crashing into each other, as well as stop them from drifting away

Hope this helped ♥︎

The Ural Mountains exhibit a north–south orientation through ­Eurasia . How does the theory of plate tectonics explain the existence of this mountain belt in the interior of an expansive landmass?

Answers

Answer:

Ural Mountains have been formed by the collusion of plates during formation of Laurasia supercontinent.

Explanation:

The plate tectonic theory explains the origin of the different landmasses and the variation in different physical relief features over the globe. The Ural mountain ranges are those physical features that run north to south through the western Russia and they form a convection boundary between Europe and Asia. The form an extension of 2,500 km and are approx 1,895 in elevation. Their orology has been formed due to the collusion of the eastern edge of the Laurasia supercontinent  with the continent of Kazakhstan and the intervening of the island arcs. This took place in the late Carboniferous period.

Which of the following gulfs are in Southeast Asia? A. the Gulf of Aden and the Gulf of Bahrain B. the Gulf of Mexico and the Gulf of California C. the Gulf of Thailand and the Gulf of Tonkin D. the Gulf of Suez and the Gulf of Oman

Answers

Answer:

Which of the following gulfs are in Southeast Asia?

C. the Gulf of Thailand and the Gulf of Tonkin

Answer:

I do agree, and think it's C. The Gulf of Thailand and the Gulf of Tonkin

Which planet has a greater mass than the combined mass of all the remaining planets and their moons?

Answers

Answer:

the planet (jupiter) has a greater mass than the combined mass of all the remaining pplanets and theor moons.

Where else in the bay area or elsewhere do you think would be an important place to dedicate as a wildlife corridor? Explain why?

Answers

Answer:

Apart from the Gulf of Mexico area there are other areas that can be wildlife corridor. These could be:

Canadian forest - taigaAndean mountain area - there are many endemic and endangered species.

units use to measure temperature

Answers

Explanation:

Hey, there!!

Temperature is defined average kinetic enegry of the molecules contained in the body or substance. The SI unit of temperature is kelvin. We generally measure temperature in:

Fahrenheit (ranges from 32°f to 212° f)Kelvin (ranges from 273° k to 373° k)centrigrade ( ranges from 0°c to 100° c)

Hope it helps...

why should be people living in developed countries be as concerned as people living in developing countries about climate change ​

Answers

Answer:

Developed countries have contributed 80% of the global warming as compared to the developing nations.

Explanation:

Climate and global warming are a global phenomenon and affect each and every nation differently, the rise of the surface temperature and rose of the sea levels all around the world impacts the settlements along the coasts. The increase of the greenhouse effects has led to the increase of the oceans becoming a carbon sink.  The impact of climate change is felt in developed nations in the form of heatwaves, extreme weather patterns, and submergence of the coastland lands. Every year billions of dollars are wasted on food and water supplies.  As of 2030 estimated global warming is expected to kill 250,000 people form malnutrition, malaria, diarrhea, and heat stress.

Based on these observations, we can conclude that the mountains in Shenandoah National Park have undergone __________ erosion and are __________ the Rocky Mountains.

Answers

Answer:

The answer is A) more, older than.

Explanation:

It says that the rocky mountains are older and that Shenandoah National Park have undergone more erosion in the passage.

Here is a general sequence of events in the development of the Renaissance. Which statement BEST completes the second event? Event 1: Italy's location encouraged trade. Event 2: Event 3: Italy's families became art patrons. A. Italian merchants helped artists and writers study in Muslim lands. B. Italian merchants gained wealth and political power. C. The Renaissance spread beyond Italy to other countries in Europe. D. New Italian city-states emerged to sponsor the Renaissance.

Answers

Answer:

Event 1: Italy's location encouraged trade.

Event 2: Italian merchants gained wealth and political power.

Event 3: Italy's families became art patrons.

Answer:

Event 1: Italy's location encouraged trade.

Event 2: Italian merchants gained wealth and political power.

Event 3: Italy's families became art patrons.

Explanation:

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