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

When Izzy applied force to the golf ball it went in the right direction so why didn’t it go in the hole

Answers

Answer:

Air resistance and fluid friction

Explanation:

Fluid friction is "drag" and that also depends on if the wind is blowing and how fast the wind is blowing and how much force she applied to hit the golf ball. Hope this helps!

how long do we have until climate change is irreversible

Answers

Answer:

it would take over one thousand years to disintegrate completely and potentially thousands of year longer if we manage to cut emissions quickly.

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where do the majoraty of australians live

Answers

Answer:

Australia

Explanation:

Answer:

The Eastern Mainland States

Explanation:

Around 80 percent of Australians live in The Eastern Mainland States because it contains areas such as Wales, Victoria, and Queensland.

In which regions of the world does the UN focus most of its attention on when attempting to separate
warring groups?

Answers

Answer:

Explanation:

Maintain International Peace and Security.

Protect Human Rights.

Deliver Humanitarian Aid.

Support Sustainable Development and Climate Action.

Uphold International Law.

Demography is the scientific study of population characteristics
O True
O False

Answers

Answer:

true is the answer I think

It’s true but i dont know

What arrangement would give us the largest tides?

Answers

This would be around each new moon and full moon – when the sun, Earth, and moon are located more or less on a line in space – the range between high and low tides is greatest. These are the spring tides.

what type of weather occurs when pressure rises and temperatures rise

Answers

Answer: Weather in a high-pressure system is usually drier.

Explanation:

As the sinking air increases in pressure and temperature, the number of clouds in the sky decreases leaving less chance for precipitation. Some avid fishermen even swear by a rising barometer to get their best catches!

which european nation attemped to colonize haiti and left an ongoing cultural legacy on haitian society

Answers

Answer:

France

Explanation:

I learned this

what fraction of an iceberg is above the surface of the water?

Answers

Answer:

About 1/10

Explanation:

This is due to the volume, size, and age of the iceberg. Hope this helps :)

How can colonial history affect the quality of life?

Answers

Colonialism's impacts include environmental degradation, the spread of disease, economic instability, ethnic rivalries, and human rights violations—issues that can long outlast one group's colonial rule

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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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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On either side of a mid-ocean ridge, the lithosphere begins toa.rise because it becomes buoyant.b.sink because it cools and contracts.c.sink because convection pulls it downward.d.rise because it thickens away from the ridge.

Answers

Answer:

Option B is the correct answer.

Geographers consider the areas stretching above and below the Sahara Desert as part of the African continent. Some geographers feel the cultures of North Africa are more closely associated with those of the Middle East than with Sub-Saharan Africa. This shows that: ________

a. cultural characteristics can be used to define regions.
b. Africa was subjected to European imperialism
c. most Africans would like to emigrate to the Middle East.
d. North Africa’s physical features prevented contact with the Middle East.

Answers

Answer:

i go with a cultural characteristics can be used to define regions

Explanation:

Some geographers think that North African people are more closely associated with those of the Middle East than with Sub-Sahara Africa. This shows that cultural characteristics can be used to define the regions. Hence, option A is appropriate.

What is a Culture?

A Culture can be denoted as something which has a proper understanding of what it is like and also understands the shared beliefs within themselves. The most important thing regarding Culture is that Culture helps to make it a more precarious way.

Culture also helps us understand the ways and means of understanding various means of being associated with a group of things. The association based on the understanding of the resources helps in the belief of what individual beliefs based on culture religion and many other things are associated.

A culture helps an individual to identify themselves with a group of beliefs which may be religious wise and also many more. Hence, option A is correct.

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when was the last time a volcano erupted in hawaii

Answers

Answer:

setember 29,2021

Explanation:

The volcano name is kilauea

What are 10 methods used to uncover the past climates of the earth including their strengths and weakness

Answers

The ten methods used to uncover the past climates of the earth including their strengths and weakness includes:

Making an analysis of the samples of ice core.Making scientific observation of the remnants of glacial land forms.Making a survey of the sediments which are on the floor of the ocean.Checking the fossils of old vegetation.Checking sites of ancient volcanoes.Making calculations of the animals which went extinct during the Ice Age.Dating the fossil of dinosaurs.Making deep glacier explorations.Checking the concentration of greenhouse gases.Checking for plucked rocks and U-shaped valleys.

Thousands and millions of years ago, the climate of the earth was much different and there were different animals and creatures around of which the most popular ones which have gone extinct are the dinosaurs.

With this in mind, humans were probably not around during this time or if they were, they would be unable to write down the climates which people of this day and age would properly interpret, therefore this is where paleoclimatology comes in as it studies the past climates of the earth through various methods which were mentioned above.

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What is the most common substance that is dissolved in ocean water?

Answers

Answer:

The most common substance would be Sodium Chloride

What two Ideas do geographers use when studying movement?

Answers

sorry but

i am just in class 6

SEMESTER EXAM QUESTION HELP!!! : Select the region with the highest elevation

a.Mountains and Basins
b.Great Plains
c.North Central Plains
d.Coastal Plains

Answers

Answer:

l think mountain and basins

How early civilizations influence people of today? 5 paragraphs

Answers

Ancient Egypt used pictures and symbols as a form of writing just like emoji’s and the Norse said I’ve taken an arrow to the knee when proposing which is why we get down on one knee when proposing

the global patterns of atmospheric circulation and precipitation occur because of

Answers

The global patterns of atmospheric circulation and precipitation occur because of rising masses of warm air and sinking masses of cool air. Currents in the ocean can have a warming or cooling effect on land climates.

which of the following pairs of b countries share a border? belgium & bulgaria

Answers

The country of Brazil & Bolivia are the pair which share a border.

The border in this context refers countries which shares a close or immediate boundary. For instance, the nation of U.S. and Canada shares a border.

Here, the pairs including "Belgium & Bulgaria", "Belize & Barbados" and "Belarus & Bangladesh" does not share a  boundary.

Hence, the country of Brazil & Bolivia are the pair which share a border.

Therefore, the Option B is correct.

Missing options includes "a. belgium & bulgaria b. brazil & bolivia c. belize & barbados d. belarus & bangladesh."

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The complete options are:

A. Belgium & Bulgaria

B. Brazil & Bolivia

C. Belize & Barbados

D. Belarus & Bangladesh

The correct pair of B countries that actually share border is:

B. Brazil & Bolivia

Let's further understand the Bolivia–Brazil border.

Bolivia–Brazil borderThe Bolivia–Brazil border is known to be an international border.

It actually spans between the territories of Bolivia and Brazil.

This border actually extends from Corumbá, Mato Grosso do Sul, to Assis Brasil, in Acre.

The boundary line passes deserts and forests into large urban areas.

The border is known to be begin in the Pantanal and actually ends in the Amazon rainforest.

The first treaty of limits was signed in 1867 between Brazil and Bolivia.

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Due to Soviet rule, most people in Central Asia speak Russian, but there are numerous other languages and dialects in the region that descend from primarily ________ roots.

Answers

Given what we know, we can confirm that due to Soviet rule, most people in Central Asia speak Russian, but there are numerous other languages and dialects in the region that descend from primarily indigenous roots.

What is meant by indigenous roots?By indigenous roots, we refer to the ancestors of the current-day civilization of Russia. These are the first inhabitants of the land to form civilized groups. Russia is home to many indigenous tribes, that have now adapted to modern life.However, some aspects of the tribes, such as the languages, remain.

Therefore we can confirm that due to Soviet rule, most people in Central Asia speak Russian, but there are numerous other languages and dialects in the region that descend from primarily indigenous roots.

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What happened to Germany after Charlemagne's death?
Germany broke up into small, independent political units.
Western powers occupied Germany.
Germany suffered a major economic collapse.
Adolf Hitler and the Nazi Party took power.

Answers

Answer:

Adolf Hitler and the Nazi Party took power .

The incident that happened to Germany after Charlemagne's death is that Adolf Hitler and the Nazi Party took power.

What happened when Charlemagne's died?

After the death of Charlemagne then the Carolingian Empire weakened and empire was divided into three parts and after this Adolf Hitler and the Nazi Party took power

Therefore option D is correct.

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Which of the following most likely to increase the chance of the formation of a heat island?

Build a small skate park
Construct a shopping mall
Drive to work
Use public transportation often

Answers

By Constructing a shopping mall is most likely to increase the chance of the formation of a heat island.

What are Heat Islands?

Heat Islands are urbanized areas that experience higher temperatures than the surrounding areas. Structures such as buildings, roads and other infrastrcture absorb and re-emit the sun's heat more than the natural landscapes such as forest and water bodies.

Urban areas where the man-made structures are highly concentrated and greenary is limited, becomes 'islands' of higher temperatures relative to outlying areas.

The urban heat islands effect happens because the closely packed buildings and paved surface that makes the cities amplify and trap heat more than natural ecosystems.

The cities generate their own heat , which is released from sources such as furnaces, air conditioners and vehicles.

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Give a descriptive case study of the floods of 2021 of sangli and kolhapur

Answers

Give a descriptive case study of the floods of 2021 of sangli and kolhapur.

Answer ; Starting on 22 July 2021, Maharashtra saw heavy rainfall in many of its western districts. On 23 July 2021, NDTV reported that Maharashtra saw the highest rainfall in the month of July in 40 years.[4]Starting on 22 July 2021, Maharashtra saw heavy rainfall in many of its western districts. On 23 July 2021, NDTV reported that Maharashtra saw the highest rainfall in the month of July in 40 years.[4]Climate change could have played an important role in causing large-scale floods across Maharashtra.[5] The observed data shows a three-fold rise in widespread extreme rainfall events across India, including those regions where the floods occurred. The local meteorological conditions showed the presence of a low pressure system in the Bay of Bengal, anchoring the monsoon westerlies blowing from the Arabian Sea. These westerlies brought in an anomalous amount of moisture from the warm Arabian Sea, releasing them as heavy-to-extreme rains across Maharashtra over a week's time.[6] In April 2021, Potsdam Institute for Climate Impact Research reported about climate change heavily impacting the monsoon seasons in India.[3]

Complete the first step of the indirect proof of the following statement:
"4X+3>12"
Assume temporarily that 4x+3 12.
Ο>
O<
O<
0=

Answers

We select the symbol of '<' if we assume temporarily for 4x+3 12.

Assume temporarily for 4x+3 12, we select the symbol of '<' because the real equation is "4X+3>12" in which the symbol '>' is used. The symbol '>' is used to show the greater number and a smaller number. The pointed side shows that the number is smaller.

while on the other hand, the wider part shows that the number or value is greater than the other one so we can conclude that we select the symbol of '<' if we assume temporarily for 4x+3 12.

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Southern Colorado is more densely populated than the northern part of the state

Answers

It is false, because Denver is the most populated and it is in the Northern part of colorodo

Explain two geographical advantages islands have that help promote trade.

Answers

They are remote and can be good locations for ports to be built, they are also often under less trade regulations than many countries and can promote their trade

explain how weather and climate are also affected by geologic and geographic factors, such as mountains and ocean temperature

Answers

Answer: explanation on how geography affects the climate

Explanation:

Climate is the prevailing patterns of temperature and precipitation across a region. A region’s climate can be tropical or frigid, rainy or arid, temperate or monsoonal. Geography, or location, is one of the major determining factors in climate across the globe. Geography itself can be divided into components including distance from the equator, elevation above sea level, distance from water and topography, or the relief of the landscape.

Higher Latitudes Have Cooler Climates

Latitude is a measure of distance from the equator. Locations between the Tropic of Cancer and the Tropic of Capricorn, between 23 degrees north and 23 degrees south latitude, are considered tropical. As you move away from the equator, climates shift incrementally through subtropical, temperate, subarctic and, finally, arctic at the poles. The tilt of the Earth on its axis means that the further you get from the equator, the longer the area spends tilted away from the sun each year, and the cooler and more seasonal the climate.

Water Bodies Regulate Precipitation and Moderate Climate

Over 70 percent of the Earth’s surface is covered in water, so it makes sense that water bodies influence climate. Oceans and lakes are very good at storing the heat that is created when the sun’s energy is absorbed by the water. The water heats and adds moisture to the air above it, a process that drives the major air currents around the world. Water bodies also make the climate of adjacent land masses more moderate. They absorb extra heat during warm periods and release it during cooler periods. Warm, moist ocean air drives precipitation patterns around the world when it falls as precipitation as it is carried over cooler land masses.

Mountains Disrupt Air Flow

Mountain ranges are barriers to the smooth movement of air currents across continents. When an air mass encounters mountains, it is slowed and cooled because the air is forced up into cooler parts of the atmosphere in order to move over the obstruction. The cooled air can no longer hold as much moisture and releases it as precipitation on the mountain range. Once the air is over the mountain, it no longer has much moisture, and the leeward side of mountain ranges is drier than the windward side.

Higher Elevations Have Cooler Climates

Climates become cooler and the cold season lasts longer as elevation above sea level rises. This holds true for mountains and high-elevation plateaus, such as the steppes of Mongolia. Every 1.61 kilometers (1 mile) in elevation gain is roughly equivalent to moving 1,290 kilometers (800 miles) further from the equator. Mechanistically, higher elevations have lower air pressure, fewer atoms per unit of air to excite and, thus, cooler temperatures. Mountains frequently receive more precipitation than the surrounding lowlands, but many high-altitude plains are deserts because of their location on the leeward side of a mountain range or continental mass.

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