in the 8 rock samples that you observed, what is the main difference you notice between the extrusive (volcanic) and intrusive igneous rocks? looking at the igneous rock identification table and your samples, what minerals make a rock felsic that are not present in mafic rocks? write 2-4 sentences answering these questions.

Answers

Answer 1

The main difference between extrusive (volcanic) and intrusive igneous rocks is their formation.

Extrusive rocks are formed when magma cools and solidifies on the Earth's surface, resulting in quick cooling and small mineral crystals. In contrast, intrusive rocks are formed when magma cools and solidifies beneath the Earth's surface, allowing for slower cooling and the growth of larger mineral crystals.

In terms of mineral composition, felsic rocks contain minerals such as quartz, feldspar, and muscovite that are not present in mafic rocks. These minerals give felsic rocks their lighter color and lower density compared to mafic rocks, which contain minerals like pyroxene and olivine. The presence of these minerals affects the overall composition and physical properties of the rocks.

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Related Questions

i dont understand this at all- ​

i dont understand this at all-

Answers

Answer:

Mee también hermano, esto es tanto que ni siquiera puedo leerlo

TRUE OR FALSE along the pacific coast of the united states, the rain shadow is the area on the slopes of mountain chains

Answers

False. The rain shadow is not the area on the slopes of mountain chains along the Pacific coast of the United States.

Along the Pacific coast of the United States, the rain shadow refers to the region that lies on the leeward side of the mountain ranges. When prevailing winds carrying moisture from the Pacific Ocean encounter mountain ranges such as the Sierra Nevada or the Cascade Range, they are forced to rise. As the air rises, it cools and releases moisture in the form of precipitation on the windward side, which is the side facing the ocean. As a result, the air that reaches the leeward side of the mountains is already dry, having lost much of its moisture.

The rain shadow effect occurs in the areas located on the leeward side of the mountain ranges, where the descending air creates drier conditions compared to the windward side. These regions often experience reduced rainfall and are referred to as rain shadow areas. Therefore, it is not accurate to say that the rain shadow is the area on the slopes of mountain chains along the Pacific coast of the United States. Instead, it is the region situated on the opposite side of the mountains, where the air descends and becomes drier, leading to less precipitation.

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Does the timing of a tsunami affect its impact?

Answers

As soon as a tsunami approaches the coast, its speed decreases considerably. This is because the speed of a tsunami depends on the depth of the water; the lesser the depth of the water, the lesser the speed of an approaching tsunami. However, there is no change in the overall impact of a tsunami.

Answer:

yes it does##################

Mohorovicic was able to use his discovery to study thickness variations of the crust. He discovered that the oceanic crust has a
relatively uniform thickness, while continental crust is thickest under mountain ranges and thinner under plains. The map on this
page illustrates the thickness of Earth's crust What CANNOT be inferred using this image?
es 0)
A)
the depth to Moho
B)
the variations crust thickness
C)
the placement of mountain ranges
D)
the rate of erosion of the crust

Mohorovicic was able to use his discovery to study thickness variations of the crust. He discovered that

Answers

I believe its D

.........

Answer:

D)

the rate of erosion of the crust

Explanation:

All other pieces of information can be obtained from the map. Variation of curst thickness and mountain ranges can be easily seen. Moho can be located and its depth can be determined form the map.

What types of evidence have been used to indicate that the Mediterranean Sea dried up around 6 million years ago

Answers

Answer:

Large scale extinction of marine organisms 6 million years ago, thick deposits of salt found at sea floor, large accumulations of sediments in basins on sea floor, and evidence of wind blown sediment beneath the sea

Explanation:

Answer:

something happened

Explanation:

they were all gone

it wasn't me who did it

mineralogical analysis of a rock can tell us a. what the rock is made of b. the detailed geological history of the rock c. the temperature and pressure conditions under which it formed d. when the rock formed

Answers

The mineralogical analysis of a rock can tell us what the rock is made of, the detailed geological history of the rock, the temperature and pressure conditions under which it formed, and when the rock formed.

In a mineralogical analysis of rocks, the minerals that the rock is composed of are identified through a microscope. Mineralogy is the study of the chemical composition and structure of minerals. A mineral is a naturally occurring substance formed from geological processes that have crystallized out of a solution.

Specifically, mineralogical analysis involves examining the minerals in the rock and their relationships to each other. This can help us determine what the rock is made of and what kind of environment it formed in (temperature and pressure). Additionally, examining the relationship between minerals can provide clues about the geological history of the rock. By analyzing radioactive isotopes, we can also estimate when the rock formed.

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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

Which of the following gulfs are in Southeast Asia? A. the Gulf of Aden and the Gulf of Bahrain B. the

Answers

Answer:

C. The Gulf of Thailand and the Gulf of Tonkin

Explanation:

hope this helps! :)

5 Disadvantages of lowland​

Answers

Answer:

natural disasters..and such

Explanation:

If you live by the shore on lowland, you may have your house or buisness or whatever flood. Hurricanes will absolutely demolish you. Soil erosion may occur. Resulting in plain pollution, plain population is the highest. Many plants can't grow.

The 5 Disadvantages of lowlands​ are

Soil erosionReduced activities of humanbarrier to communicationSome plants can't be grown like coffee.High chances of diseases

What is lowland​?

The regions that are between mountains and are impacted by both geological activities that take place on a downhill slope and the connections between people that occur in these regions are called Lowland.

Lowland rivers typically have waters that are more muddy, warm, slow-moving, and have fine sediment beds. Additionally, these traits favor invertebrate species with a wide range of thermotolerance.

The topography of New York is extremely varied in terms of features. The majority of the landscape in New York is made up of farmland, forests, rivers, mountains, and lakes.

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Which of the following claims does the excerpt make about changes that occurred as a result of new interactions in the Atlantic region?
Merchants from Asia dominated trade throughout the sixteenth century.
Europeans developed new methods of conducting trade and making profits
African kingdoms were the largest purchasers of goods produced in the Americas.
Native Americans amassed fortunes as Europeans paid high prices for rare goods.

Answers

The excerpt is not discussing the dominance of Asian merchants in Atlantic trade, the profits Europeans made, the purchasing power of African kingdoms, or the accumulation of wealth by Native Americans. Rather, it is discussing the exchange of goods and ideas between Europe, Africa, and the Americas and the impact this had on the development of the Atlantic world.

Your question asks about the claims made in the excerpt regarding changes resulting from new interactions in the Atlantic region. Based on the given options:

Merchants from Asia dominated trade throughout the sixteenth century.Europeans developed new methods of conducting trade and making profits.African kingdoms were the largest purchasers of goods produced in the Americas.Native Americans amassed fortunes as Europeans paid high prices for rare goods.

The excerpt claims that as a result of new interactions in the Atlantic region, Europeans developed new methods of conducting trade and making profits.

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What happens to unfair labour practice?​

Answers

Strike (workers don’t work and protest for fair labour practices), some workers sue the company

Does healthcare affect your family or your community

Answers

Answer:

What are the factors that determine family health?

Size of family.

Management of family income, saving and expenses.

Nutrition and food habits.

Education.

Socialization and social control.

Health education.

Sanitation.

Peace and security

Explanation:

hope this helps ❤️

the passage of shortwave and longwave energy through the atmosphere or water is an example of

Answers

The passage of shortwave and longwave energy through the atmosphere or water is an example of radiation. The atmosphere plays a crucial role in the Earth's energy budget, as it absorbs and emits radiation, leading to a complex interaction between the energy and matter in the atmosphere.

Shortwave radiation, mostly in the form of visible light, is absorbed by the Earth's surface and converted into longwave radiation, which is then emitted back into the atmosphere. This process, known as the greenhouse effect, helps to regulate the Earth's temperature, keeping it within a habitable range. The atmosphere also absorbs and scatters some of the incoming solar radiation, leading to the different colors we see in the sky at different times of day.

In summary, the passage of shortwave and longwave energy through the atmosphere is a crucial aspect of the Earth's energy budget, and understanding the complex interactions between the atmosphere and energy is essential for predicting and mitigating the effects of climate change.

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name the 2 european nations that colonized canada

Answers

From the late 15th century, French and British expeditions explored, colonized, and fought over various places within North America in what constitutes present-day Canada. The colony of New France was claimed in 1534 with permanent settlements beginning in 1608.

Using a named example, evaluate the effects of a large-scale irrigation scheme (6 marks)
• Introduction
• Locate and name the scheme
• At least 2 advantages described and explained
• At least 2 disadvantages described and explained
Concluding sentence

The irrigation Stuten should be on the Indus basin irrigation system(IBIS)

Use these points for the advantages and the disadvantages, D is for disadvantages and A is for advantages

Using a named example, evaluate the effects of a large-scale irrigation scheme (6 marks) Introduction

Answers

Answer:

· Irrigation schemes are a necessity in many countries as they supply the countries with sufficient water to produce food to meet their increasing food demand (Fanadzo, 2012).In South Africa, the Vaalharts Irrigation Scheme (VHIS) is a large irrigation scheme utilising water from the Vaal River via numerous gravity fed canals ().The return flow from the VHIS enters the Harts River (via numerous ...

Explanation:

____ are in constant motion and change the forms of the Earth's crust.
A. Solar flares
B. Tectonic plates
C. Lunar phases
D. Magnetic fields

Answers

Answer:

\(\boxed {\tt Tectonic \ plates}\)

Explanation:

We want to find the choice for something that is in constant motion and changes the forms of the Earth's crust.

Solar flares, lunar phases, and magnetic fields do not affect the Earth's crust as much as tectonic plates.

Tectonic plactes are always moving and changing pieces of the Earth's crust.  They float on top of the mantle and collide with each other, causing earthquakes, volcanoes, and more.

The best answer choice is B. Tectonic plates

What is a continuous chain? Question 3 options: When the continents were one large landmass, the mountains would have formed a continuous chain that eventually was separated upon the break up of the continents Mapping of the tectonic plates of the ocean floor. Fossils are dated by the chain of events in the geologic timeline. Chains of biologic DNA that show evidence of evolution.

Answers

Answer:

Option (1) is the correct option.    

Explanation:

When the continents were all joined together and in one place , large landmass were present. The mountains formed a continuous chain that eventually was separated upon the break up of the continents due to continental drift. Map of the tectonic plates of the ocean floor reveals this information . Continuous chain of the mountains that arise are found to be  parallel to the coastline .

Answer:

When the continents were one large landmass, the mountains would have formed a continuous chain that eventually was separated upon the break up of the continents.

Explanation:

Lmk if you have any other questions!  :)

___________, _________, and _________ are the three most urbanized countries in South America.

Answers

Answer: Argentina, Chile, Uruguay, and Venezuela

Explanation:

How did liberal capitalism change after the 1970s? I’m hoping folks will write some smart things about geography (Southern China, in particular), public policy, and computers. In formulating your argument, be sure to reflect on how liberal capitalism operated before the 1970s.

Answers

In the late 1970s, a man named Deng Xiaoping guided China into the way of Capitalism. Beforehand, the people of China lived in a Communist nation, in the "trusted hands" of the Chinese Communist Party. Deng Xiaoping enlightened China to the ways of Capitalism through The Four Modernizations. The Four Modernizations were set forth by Deng Xiaoping in an attempt to strengthen China's main fields of both revenue and way of life. The Four Modernizations targeted China's field of agriculture, field of industry, field of defense, and field of science/technology.

The Four Modernizations created a want to throw out the old, and be in with the new. Old culture, ideas, customs, and habits were all thrown out the window! And as part of "out with the old ideas", the old idea for a communistic society also evaporates. Making way for capitalism to swish into China.

Hope this helps you!

over the tropical north atlantic and eastern north pacific oceans, atmospheric conditions conducive to hurricane development can exist outside of the official hurricane season dates.

Answers

Yes, it is true that over the tropical north Atlantic and eastern north Pacific oceans, atmospheric conditions conducive to hurricane development can exist outside of the official hurricane season dates.

The official hurricane season for the Atlantic Basin (the Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico) is from June 1 to November 30, while the official hurricane season for the eastern Pacific is from May 15 to November 30. However, hurricanes can form outside of these dates if the atmospheric conditions are favorable. These conditions include warm ocean temperatures, low vertical wind shear, and a conducive atmospheric environment. While it is less common for hurricanes to form outside of the official season dates, it is not impossible.

Your question seems incomplete. The completed version is as follows:

Over the tropical north Atlantic and eastern north pacific oceans, atmospheric conditions conducive to hurricane development can exist outside of the official hurricane season dates. Is this statement true?

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All rock materials on Earth have been recycled at least one
time.
Question 15 options:




True



False

Answers

The statement is false. While many rock materials on Earth have undergone multiple cycles of formation, alteration, and erosion over millions of years, not all rock materials have been recycled at least once.

Some rocks, such as igneous rocks that form from solidification of molten material, may have never undergone a recycling process. Additionally, certain geological processes can result in the formation of new rocks without the need for recycling pre-existing rocks.

Therefore, it cannot be generalized that all rock materials on Earth have been recycled at least once. The Earth's geological processes are complex and diverse, leading to the formation of various types of rocks with different histories and origins.

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where do earthquake occur​

Answers

Explanation:

Earthquakes occur all the time all over the world, both along plate edges and along faults. Most earthquakes occur along the edge of the oceanic and continental plates. The earth's crust (the outer layer of the planet) is made up of several pieces, called plates.

hope it helps.

stay safe healthy and happy.

Earthquake occur everywhere, nearly everytime, but they are too weak for us to detect, without any device. Plates are always moving. But sometimes it is strong and we can detect it, most earthquakes occur at the edge of plates.

explain the relationship between temperature difference and the probability of precipitation​

Answers

Answer:

As average temperatures at the Earth's surface rise, more evaporation occurs, which, in turn, increases overall precipitation. Therefore, a warming climate is expected to increase precipitation in many areas.

Explanation:

(hope this helps)

How are Human Geography and Physical Geography connected?

Answers

Answer:

physical and human geography, although relatively little work involves collaboration among human and physical geographers. For the latter, it involves incorporating human-induced changes to models of environmental processes and systems.

Explanation:

What does a porphyritic texture indicate about the cooling history of an igneous rock?.

Answers

Porphyritic texture indicates that the cooling history of an igneous rock is multistage.

The porphyritic texture of an igneous rock is characterized by larger crystals (phenocrysts) that are embedded in a fine-grained matrix (groundmass) of smaller crystals. Porphyritic texture is created when the magma undergoes two cooling rates. During the first stage, the magma cools and forms crystals. In the second stage, the magma cools much more quickly, producing the fine-grained matrix. As a result, porphyritic texture indicates that the cooling history of an igneous rock is multistage.However, if the rock were to undergo a single-stage cooling process, it would have only one type of crystal size. For instance, a lava flow that cools on the surface would cool quickly and form a single crystal size as the hot lava is exposed to the cooler atmosphere. As a result, there would be no phenocrysts, only the groundmass of smaller crystals.

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effect of tropical rainforest deforestation on the local environment?​

Answers

Explanation:

There are several effects of tropical rainforest deforestation on the local environment.

Deforestation is the removal of the land cover usually shrubs and vegetation. This often leads to;

Loss of habitat for arboreal organisms that depends on trees for their dwelling. Increase likelihood for desertification of an area. exposure of the land surface to erosion, and this leads to removal of the fertile soil top layer. loss of soil fertility and productivity for the ecosystem.

What is the similarity between the multiple-nuclei model and the galactic city model, both developed by Chauncy Harris, yet a difference between Hoyt and Burgess's models?

options:

Harris's models do not take into account suburbanization, whereas the other models do.


Harris's models are decentralized, whereas the others cities focus on the CBD (central business district).


Harris's models focus primarily on the CBD (central business district), whereas the other models do not.


The concentric zone and sector models focus on transportation systems, whereas Harris's models are built on public transportation.


The concentric zone and sector models do not focus on socioeconomic disparities, whereas the Harris models do.

Answers

Answer:

Harris's models are decentralized, whereas the others cities focus on the CBD (central business district).

Explanation:

The similarity between the multiple-nuclei model and the galactic city model, both developed by Chauncy Harris, is that they both recognize that cities can have multiple centers of activity, rather than a single central business district (CBD). Both models suggest that cities can have multiple nodes of economic activity and that these nodes can be connected by transportation networks.

A difference between Hoyt and Burgess's models is that the concentric zone model developed by Burgess suggests that cities develop in concentric rings, with the CBD at the center and various land uses radiating outwards in a series of concentric circles. In contrast, the sector model developed by Hoyt suggests that cities develop along transportation corridors or sectors, with various land uses aligned along these corridors.

Model with multiple nuclei. Chauncy Harris and Edward Ullman developed an economic model. It states that, while a city may have begun with a central.

What's the distinction between multiple nuclei and the galactic model?

Ullman and Harris' multiple nuclei model suggests that growth is independent of the central business district. The galactic city model depicts a city that is growing independently of the CBD, which is traditionally linked to the central city via an arterial highway or interstate.

What is the town and city multiple nuclei model?

A Multiple-Nuclei Model city is one that has several nodes that act as regional centers for economic or residential activity within one city rather than one central area. larger city. einsteineruploading up to get together with. larger city. With its many distinct neighborhoods, Los Angeles is a prototypical example of this type of city.

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circle lake chad and the atlas mountain and what direction would a camel caravan travel to get from lake chad to the atlas mountains

Answers

To get from Lake Chad to the Atlas Mountains, a camel caravan would travel in a northwesterly direction. Here's an explanation of why: Circle Lake Chad and the Atlas Mountain: Lake Chad is located in the west-central part of Africa. The Atlas Mountains are located in northwest Africa.

The two are separated by a large stretch of land that includes the Sahara Desert. A camel caravan that wants to travel from Lake Chad to the Atlas Mountains must cross this desert. A desert caravan usually travels in the direction that will minimize the risk of dehydration and heat exhaustion caused by the sun. A journey in a northwesterly direction is often the best option because it allows for shorter journeys between Wate sources. The he Atlas Mountains are located in the northwest region of Africa, while Lake Chad is located in the central region of Africa. To reach the Atlas Mountains, a camel caravan from Lake Chad would need to travel in a northwesterly direction, passing through the Sahara desert. The direction of travel is influenced by the need to minimize the risk of dehydration and heat exhaustion due to the scorching heat of the sun.

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How many rotations does Neptune complete in one Earth day? a. 10 b. 5 c. 1.5 d. 1​

Answers

Answer:

1.5, becausw Neptune takes 16 hours to complete one rotation

Solar panels create electricity from

Answers

from sunlight

(ultraviolet rays)

from sunlight! :)...

Why do you think the top three tsunami caused such high death counts?

Answers

Answer:Injuries from debris account for many of the health

Explanation:cause of death due to tsunamis. Injuries from debris account for many of the health care needs in the immediate aftermath of the disaster. Falling structures and waters full of swirling debris can inflict crush injuries, fractures, and a variety of open and closed wounds.Tsunamis are caused by violent seafloor movement associated with earthquakes, landslides, lava entering the sea, seamount collapse.

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