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Social sciences: geography

Grade 6

Population distribution and density on a global scale

Module 6

Rapid expansion problems

Rio de Janeiro : one city ─ two worlds

Note : One of the 22 federal states of Brazil is called Rio de Janeiro, but in this learning unit we are referring to the city of Rio de Janeiro, which was the capital city of Brazil until 1960. The harbour city of Rio de Janeiro, in Guanabara Bay, is the most important economic and financial centre of the country.

Activity 1:

To do research on rio de janeiro and consult a number of sources

[lo 1.2, 1.5]

1. What does the name mean?

2. How did the city get this name?

3. What language is spoken by the majority of residents?

4. Longitude and latitude of the city:

5. The climate of the city:

6. Population of the city:

1. Rapid growth causes serious problems.

  • In 1969 the population was 4 million – this grew to 12 million in the following 30 years! When the population grows so rapidly – anywhere in the world – problems occur.
  • Brazil is not a rich enough country to provide houses for everyone who moves from the countryside to the city. Because many of these new inhabitants have moved to the city in search of a better life, it is obvious that they do not have money to build conventional houses. Much more than a house is needed: water and electricity must also be supplied. Then there is a need for sewerage and transport. This situation is more serious in many other developing countries and cities, because employment opportunities do not increase as rapidly as the population. This makes large-scale informal housing unavoidable – also in Rio de Janeiro.
  • Because of inadequate public transport, the informal settlements have developed close to the city centre and industrial areas, as in other countries.
  • About a quarter of Rio de Janeiro’s residents live in informal settlements, called favelas . The favelas are characterised by bad planning (often no planning), unhealthy living conditions and crime. The contrast in living conditions between the rich and the poor is more obvious in this city than in other cities with an exceptionally rapid growth rate. In one part of the city wealthy people live in big houses on large pieces of land. 5% of the city’s residents live on 25% of the city’s land.

Why has the influx of people into Rio de Janeiro been so rapid?

During the last part of the previous century, migration of people took place from isolated rural areas to urban areas – it seemed that people found the facilities and the attractions of the cities irresistible. Many people were convinced that the opportunities that could ensure the future of their children could only be provided in the cities. In Brazil this tendency was further influenced by droughts and other problems in the agricultural sector in the country’s interior.

Food factories, manufacturers of textile fabrics, electronic equipment and pharmaceuticals, as well as oil refineries, provide employment opportunities in Rio de Janeiro.

The worldwide phenomenon of a rapidly developing tourist industry is also evident in Rio de Janeiro – the city’s beaches and the natural beauty of the environment attract people from all over the world. Unfortunately the growth in employment opportunities in tourism and industry is not as fast as the population growth. The results are predictable.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Geography grade 6. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col11000/1.1
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