What causes convection currents

Answers

Answer 1

Answer:

convection currents are the result of differential heating

Answer 2

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

Explanation:


Related Questions

which type of event often occurs along transform fault boundaries?

Answers

The third type of plate boundary occurs where tectonic plates slide horizontally past each other. This is known as a transform plate boundary. As the plates rub against each other, huge stresses can cause portions of the rock to break, resulting in earthquakes. Places where these breaks occur are called faults.

hope this helps!

what page in the esrt can you find the tropic of cancer labeled?

Answers

The cancer tropic can be referenced on a page that talks about the imaginary landmarks of the Earth.

What is the Tropic of Cancer?

The Tropic of Cancer is a term to refer to the imaginary parallel line of planet Earth that is located in the northern hemisphere at a latitude of 23º 26 ′ 14 ″ 1 north of the equator.

The Tropic of Cancer is a reference point for marking the northernmost points where the sun reaches its zenith during the boreal summer solstice. According to the above, the Tropic of Cancer can be referenced on a page that talks about the imaginary landmarks of the Earth.

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Select the correct answer. Along with Earth’s crust, which portion of the upper mantle forms the lithosphere? A. cooler, more rigid outer portion B. hotter, liquid-like inner portion C. cooler, liquid-like inner portion D. hotter, more rigid outer portion

Answers

The correct answer is option A, that is, cooler and more rigid outer portion.

The lithosphere of the Earth comprises the crust and the uppermost mantle that forms the rigid and hard outer layer of the Earth. The lithosphere is sub-differentiated into tectonic plates. The topmost section of the lithosphere, which chemically reacts with the hydrosphere, atmosphere, and biosphere via the soil producing procedure is known as the pedosphere. The lithosphere is situated above the asthenosphere that is the hotter, weaker, and deeper component of the upper mantle.

Describe the world city concept in the context of globalization.​

Answers

Answer:

Global cities are and always have been both, products and producers of globalization.

Explanation:

They play an important role in shaping a global economy, culture and society, but they are also shaped by it. And they are places where countervailing forces match and local reactions to globalization become especially visible.

which two continents did alfred wegener think looked like they fit together like puzzle pieces?

Answers

The east coast of South America and the west coast of Africa

How do waves erode coastlines? Select three options. Back-and-forth movement loosens sediment and rock. Large rocks are picked up and deposited in new areas. Continuous impacts loosen sediment and rock. Loose sediment is picked up and blown to other locations. Sediments scrape against one another and wear away surfaces.

Answers

Answer:

options: A, D and E

Explanation:

Back-and-forth movement loosens sediment and rock.

Loose sediment is picked up and blown to other locations.

Sediments scrape against one another and wear away surfaces

I believe those are correct. hope this helps :)

It can be inferred from global patterns of population growth that the country most likely to be in West Africa is?
Country I

Answer A: Country I

Answer B: Country II

Answer C: Country III

Answer D: Country IV

Answers

Based on the patterns seen in the table, the most likely country in West Africa is Country III

West Africa is:

The fastest growing region in terms of population in the world Known to have a high death rate as well

The country with the highest population growth rate over the period is Country III and it also has a high death rate.

We can therefore conclude that Country III is most likely in West Africa.

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Why does Washington in USA is in darkness when Bengaluru has bright sunny day at the same point in time? ______________________________________________________________________________

Answers

The reason is because of time zones. Since they are on the opposite side of the world, they also have opposite time. 10 AM in Washington DC is 8:30 PM in Bengaluru. You get your time zone based on your latitude and longitude.

what kind of boundary does seafloor spreading occur at?

Answers

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense.

hope this helps!

Answer:

divergent plate boundaries

Explanation:

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense.

The element phosphorus is located to the right of the element magnesium along the same period in the periodic table.

Which best describes the relationship of the elements?
Magnesium has a larger atomic number.
Phosphorus has a larger atomic mass.
Magnesium is in the same category as phosphorus.
Phosphorus has similar chemical properties as magnesium.

Answers

Phosphorus has a larger atomic mass

Phosphorus has a larger atomic mass best describes the relationship between the elements. Thus, option B is correct.

What is a periodic table?

A grouping of chemical elements according to recurrent features and presented in a table by increasing numbers of atoms.  A table of chemical compounds with their atomic numbers displayed in columns horizontally is termed as the periodic table.

Phosphorus is mass number 31. This indicates that the atomic structure of the most prevalent isotope of phosphorus contains a total of 31 protons and neutrons.

The nuclear masses of the components were placed in an ascending sequence so that the middle element's value was equivalent to the sum of the weights of both of the initial elements. Therefore, option B is the correct option.

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In Saudi Arabian currency 1 riyal equals 20 qurush. Sheik Ahab had 15 coins whose

value was 205 qurush. How many coins of each kind were there?

Answers

Answer:

10 qurush, 5 riyals

Explanation:

20(qurush)x10

=

200

+

5(riyals)

=

205

PLEASE HELPPP I'LL GIVE 20 POINTS

Answers

Answer:

a,c, and d.

Explanation:

What real world scenarios best exemplifies the concept of hierarchical diffusion?

Answers

Answer:

Hierarchical diffusion is one of six ways cultures can spread around the world (what we call ‘types of cultural diffusion’). What makes hierarchical diffusion unique is that it involves the spread of culture starting from the most powerful and influential people within the culture.

Once the influential people embrace a certain culture, the rest of the culture are more likely to follow.

Explanation:

When an idea spreads through hierarchical diffusion, it first spreads among the most connected individuals before spreading to other individuals. Consider the chain of command in business and government. In terms of authority, there is some sort of hierarchy.

What is the difference between hierarchical and reverse hierarchical diffusion?

Hierarchical: celebrities start using the new word, and it travels down the social ladder, or individuals in large cities start using the word, and it finally spreads to smaller towns or media markets. OR Reverse Hierarchical: minority usage spreads up the social ladder to majority usage.

Hierarchical diffusion occurs when a cultural trend spreads from one part of society to another in a predictable fashion, such as hip-hop spreading from cities to less populous areas. Stimulus diffusion occurs when a cultural trend spreads but is altered by individuals who adopt it, such as American yoga practitioners.

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What is it called when people start placing loyalty to their own territory?

Answers

Answer: That is called sectionalism.

lmportance of climate

Answers

Answer:

climate is important in our life as

1.Rain needs to agriculture.

2.heat also needed to plants grow well.

3.Winter needed for us to play with.

Troposphere is affected maximum by affected maximum by human activities​

Answers

Local air pollution is another way that humans have an impact on the environment. At the ground level, compounds produced by fossil fuel burning frequently produce ozone molecules. People who have respiratory problems are at risk, and long-term exposure can harm the lungs.

Which of these is not a push factor for migration?
Group of answer choices

violence

political corruption

gender inequality

educational opportunies

Answers

Educational opportunities
Education Opportunities


Think of the word “push” push factors
are what pushes away ideas that people wouldn’t like, hopes this helps :)

which european capital is known as the ""eternal city""?

Answers

It was first called The Eternal City (Latin: Urbs Aeterna; Italian: La Città Eterna) by the Roman poet Tibullus in the 1st century BC, and the expression was also taken up by Ovid, Virgil, and Livy. Rome is also called "Caput Mundi" (Capital of the World).

hope this helps!

The United States is the world's leader in
A. forestry
B. fishing
C. mining
D. manufacturing
Please select the best answer from the choices provided

Answers

Answer:

d

Explanation:

Answer:

D. manufacturing

Explanation:

2.
……………………………occur due to the air disturbances in the Bay of Bengal.

Answers

In luck now I hope it helps u

WHO IS THE REASN WHY THERE IS A PRESIDANT

100 points

Answers

Answer:

BECAUSE WE DONT KNOW!!!!!!!!!!!!!!!!

Explanation:

Answer:

George Washington was the country's first president. Curator Harry Rubenstein at the Smithsonian's National Museum of American History says the writers of the Constitution created the position of president with Washington in mind.Feb 14, 2021

Explanation:

How are maps used to explain relationships between people, places, or regions?

Answers

Answer:

they can show the size and the distance between multiple places.

the fictional jurassic park is located off the coast of what real country?

Answers

Answer:

The film is set on the fictional island of Isla Nublar, located off Central America's Pacific Coast near Costa Rica.

Explanation: I am a HUGE Jurassic Park fan.

The fictional Jurassic Park is located off the coast of Costa Rica real country.

What is Jurassic Park?

Jurassic Park was the famous English classic adventure movie. The Jurassic Park was the directed the movie by Steven Spielberg. This movie was the based on the novel by Michael Crichton. The main screen play by Crichton and David Koepp. It was not exist.

The Jurassic Park islands are supposed to be in Central America, while the exact location of the filming is Hawaii. The fictitious tropical island is 120 miles west of Costa Rica and is home to a dormant volcano. Unfortunately, it was not a genuine Costa Rican island, and the film sequence takes place on the Isla del Coco.

As a result, the fictional Jurassic Park is located off the coast of Costa Rica real country.

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what is the name of the islands west of ecuador that famed scientist charles darwin spent a lot of time studying?

Answers

Answer:

The Galapagos Islands were studied

About how old is the Sun? 1. 2 billion years 4. 6 billion years 6. 4 billion years 8. 2 billion years.

Answers

Answer:

The Sun is 4.6 billion years old.

The sun is about 4.6 billion years old

Why does the moon appears to be less bright than the sun despite its very close distance to Earth.

Answers

Answer:

The moon only seems bright in the night sky because it is so close to the earth and because the trees, houses, and fields around you are so dark at night. In fact, the moon is one of the least reflective objects in the solar system.

the thar desert is located __________ on the indian subcontinent.

Answers

Answer:

the thar desert is located __________ on the indian subcontinent.

Explanation:

Northwest India

please let me know if this is wrong

what three elements make up most of the atmosphere?

Answers

Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.

PLEASE HELP ME

Which is NOT an example of a primary industry?
Question 7 options:

timbering

hunting

fishing

milling

Answers

Answer:

milling

Explanation:

cuz it is processed

You want to determine if planets farther from the
sun have a longer orbital period because they have
longer orbits or because they move at a slower
pace. What additional information would you need
to answer this question?
I

Answers

Answer: The sun orbits around the Milky Way while all the other planets like Earth, Saturn, Mars, etc. rotate around the Sun.

Explanation:

I learned this in like elementary lol

A planet that is farther from the Sun not only has a longer path than a planet that is closer to the Sun, but it also travels slower because the Sun's gravitational pull on it is weaker.

Why do planets move faster as they get closer to the Sun?

A planet revolves around the sun in such a way that its areal velocity is constant, according to Kepler's law of planetary motion. That is, it moves faster as it gets closer to the sun and vice versa.

Planets that orbit the Sun closer to the Sun have shorter years than Earth. Planets that orbit the Sun further away from the Sun have longer years than Earth.

This occurs for two primary reasons. When a planet is close to the Sun, its orbit around the Sun is relatively short.

Therefore, this statement given under the Kepler second law, A planet that is farther from the Sun not only has a longer path than a planet that is closer to the Sun, but it also travels slower because the Sun's gravitational pull on it is weaker. As a result, the larger a planet's orbit, the longer it takes to complete.

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