Geography

Human Resources

Question:

What are the factors affecting the population change in a region? [Imp.]

Answer:

Factors affecting the population change in a region are birth rate, death rate and migrations. Birth rate is a statistic that measures the number of live births per 1000 people. Death rate is a statistic that measures the number of deaths per 1000 people. Along with birth and death rate, another factor affecting population change is migration. Migration refers to the movement of people from one area to another. People leaving a country are called emigrants and the phenomenon is called emigration. People arriving in a country are called immigrants and the phenomenon is called immigration.

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Human Resources

Q 1.

Complete the sentences below using some of the following words.sparsely, favourably, fallow, artificial, fertile, natural, extreme, densely When people are attracted’to an area it becomes populated.Factors that influence this include climate; good supplies of resources and land.

Q 2.

Tick the correct answer.
(i) Which does the term population distribution refer to?
(a) How population in a specified area changes over time.
(b) The number of people who die in relation to the number of people bom in a specified area.
(c) The way in which people are spread across a given area.
(ii) Which are three main factors that cause population change?
(a) Births, deaths and marriages (b) Births, deaths and life expectancy (c) Births, deaths and life expectancy
(iii) In 1999, the world population reached
(a) 1 billion (b) 3 billion
(c) 6 billion
(iv) What is a population pyramid?
(a) A graphical presentation of the age, sex composition of a population.
(b) When the population density of an area is so high that people live in tall buildings.
(c) Pattern of population distribution in large urban areas.

Q 3.

In what respects do different human beings differ?

Q 4.

Describe how the population of the world has grown in history. What has caused the population explosion?

Q 5.

How does climate affect the population distribution of an area?

Q 6.

Compare the population density of the world with that of India.

Q 7.

What is an age-sex pyramid?

Q 8.

Which of these countries is more densely populated: one with a small population in a large area, or one with a large population in a large area?

Q 9.

What is life expectancy?

Q 10.

With the help of figures, describe how population varies across continents.

Q 11.

Fill in the blank spaces given to complete each sentence.
(i) ………… is considered to be the ultimate resource.
(ii) More than 90% of the world's population resides on just …………… per cent of the total land surface.
(iii) The top ten countries in population cover about …………. per cent of the total world population.
(iv) ………… is the most populated country in North America.
(v) The world's population reached a billion in the year ………….
(i) Birth rate and death rate are usually expressed in terms of per ………… people.
(ii) The difference between the ……… and the ………… is called natural growth rate of population.
(viii) The age group 0-15 comes under the economically ………….. group.

Q 12.

If 600 people live in your colony, and the area of your colony is 2 sq km, what is the population density of your colony?

Q 13.

Describe how various factors affect population distribution.

Q 14.

What is the general trend of migrations from one country to another? Why is it so?

Q 15.

Complete the sentences below using some of the following words.sparsely, favourably, fallow, artificial, fertile, natural, extreme, densely When people are attracted’to an area it becomes populated.Factors that influence this include climate; good supplies of resources and land.

Q 16.

What are the factors affecting the population change in a region? [Imp.]

Q 17.

Answer the following questions.
(i) Why are people considered a resource?
(it) What are the causes for the uneven distribution of population in the world?
(Hi) The world population has grown very rapidly. Why?
(iv) Discuss the role of any two factors influencing population change.
(v) What is meant by population composition?
(vi) What are population pyramids ? How do they help in understanding about the population of a country?

Q 18.

State whether each of the following statements is true (T) or false (F).
(i) Many more people live to the south of the Equator than the north.
(ii) Each of the top ten populated countries have a population over 100 million.
(iii) South Central Asia has the highest density of population.
(iv) The population of the world doubled between 1820 and 1999.
(v) In the United Kingdom, the birth rate as well as the death rate is low.
(vi) Japan and Bangladesh are very densely populated. We can conclude that both are economically underdeveloped.

Q 19.

Match the items given in Column I correctly with those given in Column II.
ncert-solutions-for-class-8-geography-social-science-human-resources-1

Q 20.

Activity:
Discuss the characteristics of a society with "too many under 15s"and one with "too few under 15s".

Q 21.

What is a population pyramid? What is its significance and what information can it give? Look at the population pyramid in the figure and answer these questions:
ncert-solutions-for-class-8-geography-social-science-human-resources-2
(a) What can you say about the birth rates of the country? Give evidence.
(b) What does the shape at the top of the pyramid indicate?
(c) Which country out of these is most
likely to have such a pyramid? A developing country, a developed country, or an underdeveloped country?