Population
Class 8th Geography (new) MHB Solution
- If the birth rate is greater than the death rate then the population _____________.…
- People of ______________ age group are included in the productive population. Complete the…
- The spread of modern technology in society is mostly dependent on ________. Complete the…
- The population density of a region can be understood from its area. Examine the following…
- The quality of the population is determined on the basis of literacy. Examine the…
- There is an adverse impact on manpower in the regions of out-migration. Examine the…
- Greater economic prosperity indicates the development of a region. Examine the following…
- Developing countries have an HDI of 1. Examine the following statements and correct the…
- What are the aspects considered in the structure of the population? Answer in brief.…
- Prepare a list of advantageous and disadvantageous factors, affecting population…
- What are the problems in areas of high population densities? Answer in brief.…
- What are the problems in the area of low population densities? Answer in brief.…
- The population is an important resource. Give Geographical Reasons.…
- Productive population is an important group. Give Geographical Reasons.…
- The study of age structures is important. Give Geographical Reasons.…
- Literacy is directly related to development. Give Geographical Reasons.…
- The real progress of a country is understood with the help of the Human Development Index.…
- Sex ratio Write notes.
- Age structure Write notes.
- Literacy Write notes.
- Survey 5 families in your neighbourhood on the basis of the following points and make a…
- ParticularsChangeA CityB CityTotal Population in 20161,00,0001,10,000Total number of…
- Even though area wise Rajasthan is a large state, the population is less. Which…
- Groups :1. Male 2. Adoloscent 3. Illiterate 4. Children 5. Unemployed 6. Infants 7. Literate…
- Have a class discussion based on the following questions.• How many people in your house…
- • How do imbalanced sex ratios affect society?• What measures can be taken to strike a…
- Answer on basis of the given table.Statistics 2010CountryPercentage of the immigrant…
- Have a discussion on the basis of the following questions and answer the following.• What…
- Study fig 7.5 and answer the following questions.• Which are the most densely populated…
- Since the past two centuries, the size of a family is decreasing. But in spite of this,…
- Have a discussion on population control with the help of the following pointsPublic…
Exercise
Question 1.Complete the following sentences.
If the birth rate is greater than the death rate then the population _____________.
A. Decreases
B. Increases
C. remains constant
D. becomes surplus
Answer:
Birth rate: The number of infants born per thousand of the population a year is known as birth rate.
Death rate: the number of deaths per thousand of the population a year is known as the death rate.
When the birth rate is greater than death rates, the population increases by increasing the number newly born infants.
Question 2.
Complete the following sentences.
People of ______________ age group are included in the productive population.
A. 0 to 14
B. 14 to 60
C. 15 to 60
D. 16 to 59
Answer:
The age group of 15-60 are economically productive and biologically reproductive. They comprise the working population.
Question 3.
Complete the following sentences.
The spread of modern technology in society is mostly dependent on ________.
A. Sex Ratio
B. Birth Rate
C. Literacy
D. Migration
Answer:
When there is an increase in literacy of the community then there will be an increase in the development of techniques. Therefore the technological development takes place.
Question 4.
Examine the following statements and correct the incorrect ones.
The population density of a region can be understood from its area.
Answer:
Population density means the ratio between the population in the area and size of the area. Therefore the given statement is correct we can understand the density by its area.
Question 5.
Examine the following statements and correct the incorrect ones.
The quality of the population is determined on the basis of literacy.
Answer:
The population quality cannot be determined by the literacy alone. It needs further social indicators such as birth rate, death rate, infant mortality rate, etc. Therefore the population quality can be determined by the cleanliness, hygiene and health condition of the economy.
Question 6.
Examine the following statements and correct the incorrect ones.
There is an adverse impact on manpower in the regions of out-migration.
Answer:
Migration is the movement of people from one place to another. In most cases, migration happens in search of employment opportunities. Thus, there will be an adverse impact on the manpower in the region of out-migration. Thus the statement is correct.
Question 7.
Examine the following statements and correct the incorrect ones.
Greater economic prosperity indicates the development of a region.
Answer:
Economic prosperity alone cannot indicate the development of a region. It is the GDP and other social indicators that will indicate the development of a region. Therefore the GDP of the region and other social, as well as economic indicators such as literacy, birth, death, health, etc., will indicate the development of the region.
Question 8.
Examine the following statements and correct the incorrect ones.
Developing countries have an HDI of 1.
Answer:
No, the developing countries will not have the HDI value of 1. The HDI value is indicated to show the development score of the economy. HDI value of 0-0.5 underdeveloped countries, 0.5-0.8 developing countries, and 0.8-1 developed countries. Therefore developing countries will have HDI value between 0.5-0.8.
Question 9.
Answer in brief.
What are the aspects considered in the structure of the population?
Answer:
Population structure refers to the composition of the population. It shows how the population is spread out across different aspects. Some of the aspects that come under the structure of the population are-
• Age structure classification- Age-sex pyramid or population pyramid shows the distribution of various age groups in a population. As the population increases, it becomes the shape of a pyramid. It shows the distribution of the population according to their age, and importance determinants like the future productive capacity of the economy can be analyzed by this.
• Population density- Population density is the intensity of population per unit area. It is the number of people living in the area per kilometre square. The density of the population is an important determinant of the population structure. It varies according to the nature of the area. In the hilly mountainous terrains, population density will be lower compared to the plains.
• Population growth- Population growth refers to the increase in the population of the area. It is the rate at which the number of people increases in comparison to the initial population over a period of time. Ironically, countries having lower growth rate will experience higher population growth and vice- versa.
• Population size- It refers to the number of people in the population.
Question 10.
Answer in brief.
Prepare a list of advantageous and disadvantageous factors, affecting population distribution.
Answer:
Population distribution refers to the way in which people are spread over the earth's surface. 90% of the population live in 10% of land area in the world.
Disadvantageous factors
• Climate
An extreme climate such very hot and very cold makes uncomfortable for the human habitation. Hilly regions make harsh climate for transportation and network facility which will make very difficult to make human habitation in such places.
• Soil
People prefer the fertility of soil before the habitation. Fertile soils are significant for agricultural and associated activities. Therefore people will not prefer soil which is not fertile.
• Water
Water is the most important factor in life. People have a preference over the places where there is fresh water availability. Then the regions like deserts and barren land will not be preferred by the habitats.
Advantageous factors
• Urbanization
Urbanization makes a favourable condition for the people because of technological development in urban areas. This technological development will attract people to employment opportunities, better education, health care, etc.
• Industrialization
Industrial belts offer job opportunities and magnetize large numbers of people. These comprise not just industrial unit workers but also transport operators, shopkeepers, bank employees, doctors, teachers, and other service providers.
Question 11.
Answer in brief.
What are the problems in areas of high population densities?
Answer:
Population density is the number of people per square kilometre. It is calculated as the number of people per unit area. India is one of the densely populated countries in the world. The problem due to high population density are:
• Lack of open space
High population makes very difficult to get a free space for a new habitat. There will be no rooms or houses or land left for the people.
• Pollution
Pollution is the main social problem faced due to the areas which have high population densities. There will be an increase in land degradation by building houses and flats which makes land pollution, water contamination by a huge volume of people makes water pollution, and massive usage of vehicles will contribute to air pollution.
• Lacks storage of water facility
These areas will lack the storage facility for water because of high density. The higher population needs more amount of water and storage capacity which lacks in these areas.
• Overcrowded
The areas with high population are overcrowded which makes the atmosphere polluted and lacks peacefulness. The environment gets damaged due to the over crowdedness.
Question 12.
Answer in brief.
What are the problems in the area of low population densities?
Answer:
• Lack of technological advancement
The area with low population density will have the problem of technological advancement. Since there will be less or no human interference there lacks the new technological advancements.
• Low level of agricultural production
The land will be less fertile because of less human interactions. Even if the land is fertile, there will less production because of lack of human inhabitants.
• Low-level of the transportation facility
There will be less transportation and communication facility in these regions. These developments will not take place because of less population density.
Question 13.
Give Geographical Reasons.
The population is an important resource.
Answer:
The population is an important resource because it provides human capital for the development of the country. The development of the country depends on the population because when there is a higher number of working population, then there will development simultaneously. Higher the population higher will be chances of having larger human resource. Therefore, the development of the human resource will increase in both skilled and unskilled labour. This increase in both the type of labourers will develop the nation in all the spheres such as economically, politically and socially. Even the dependent population such as students and children will contribute to the development of the economy. Hence the population is considered an important human resource in the world.
Question 14.
Give Geographical Reasons.
Productive population is an important group.
Answer:
Among the population group, the productive population is important because they are the group who contribute very much to the development of the country. Human resource is the basis for economic growth. Even in the high-income economies, the economic growth is very low because of the low working population. When there is a low working population, the productivity of the economy decreases even though the income for the labourers is very high. A growing working population leads to a rise in total output. The pure arithmetical increase in population creates work as well as incentives for production that impacts upon output and productivity quite positively. An increasing productive population means an increasing market for most goods and services, and we know that the partition of labour is restricted by the extent of the market. A potentially escalating market may motivate entrepreneurs to invest more and more capital in goods and machinery. Business activity will be spurred as a result, and more income and employment will be produced in the process.
Question 15.
Give Geographical Reasons.
The study of age structures is important.
Answer:
The study of age structure plays a very important role in the demographic statistics. The study of age structure indices helps to plan for the development of the economic and cultural life of the society. This study helps the planning agencies of the country to make the investment in the country according to the needs of the society; when the economy is mostly dependent population, then the investment should be made to the welfare activities such as old age pension, scholarship, etc. Whereas when there is more is more working population the investment made should be for the employment generation.
Question 16.
Give Geographical Reasons.
Literacy is directly related to development.
Answer:
Literacy is an important tool which makes the work of the productive population most efficient. The impact of literacy on economic development is positive. The literate person makes technological developments to overcome the problems in the economy such as pollution, urbanization, and etc. their needs technical experts for ensuring sustainable development.
Question 17.
Give Geographical Reasons.
The real progress of a country is understood with the help of the Human Development Index.
Answer:
The level of human development is ranked through scores of the Human Development Index (HDI) which varies between 0-1. In the HDI score, 0 states least developed state and 1 states highly developed state. It shows the real progress of the country because the indicators used to calculate the index are income, health, and education which are the most relevant factors in the country. When HDI value is higher, then the standard of living will also be higher which will make real progress in the country.
Question 18.
Write notes.
Sex ratio
Answer:
Sex ratio is defined as the number of females per thousand males in the population. This is a social indicator which measures the extent of equality between the male and female in society. The sex ratio in India is unfavourable with 948 females per 1000 thousand males. The state Kerala has a sex ratio of 1058 females per 1000 males; Pondicherry has 1001 females per 1000 males while Delhi has only 821 females per 1000 males.
Question 19.
Write notes.
Age structure
Answer:
Age structure of a population refers to the number of people in different age groups in a country. It is one of the basic characteristics of a population. The age classification makes a clear picture of the economical human resource in the country. The percentage of population under the age group of 15 years is considered as economically unproductive population. The percentage of population between 15-59 years is considered as economically productive population. The age group 59 years and above is mostly dependent population, and they are unproductive.
Question 20.
Write notes.
Literacy
Answer:
Literacy is a very important quality of the population. Labour becomes skilled labour when they become literate or have some skills. Educated people indulge in many intelligent choices and undertake research and development activities. According to Census, a person who can read and write with understanding in any language is treated as literate. India has a literacy rate of 74.04%. In India, the state Kerala has the highest literacy rate with 93.91% as of 2018.
Activity
Question 1.Survey 5 families in your neighbourhood on the basis of the following points and make a presentation.
a. Sex
b. Age group
c. Education
d. Occupation
Answer:
I surveyed 5 families in my locality. The findings are presented in the above table:
• Family I- The family consists of 2 male and 3 female members. The elderly female member has completed her 10th standard while her male counterpart has completed his 12th grade. The child is in the age group of 14-30 has completed his 12th standard. The working members of the family havecompleted their higher studies. The male member has completed his Post-Graduation and is working as a teacher in the government school. The female member has done a professional course and is working in a private firm.
• Family II- The family consists of a male and a female member. Both are in the age group of 14-30 has completed professional courses. Both of them are working in a private firm.
• Family III- The family consists of 2 male and a female member. The child in the age group of 14-30 has completed his 10th standard. The working members of the family have completed their higher studies. The male member has completed his professional course and is working in a private firm. The female member has completed her graduation and is the homemaker.
• Family IV- The family consists of 2 male and 2 female members. Both the children are in the age group of 14-30. One has completed 12th standard, and the other member has completed her graduation. The working members are in the age group of 30-60. Both have completed their Post-Graduation and are government employees.
• Family V- The family consists of a male and 4 female members. The elderly female member has completed her 12th standard. Both the children are in the age group of 14-30. One of them has completed her 10th standard, while the second child has completed her graduation. Both the working members have completed their studies. Both have completed professional courses. One of them is employed in the private sector while the other person is employed with the government.
Intext Questions
Question 1.
• Which city has greater number of newly born children?
• Which city records greater number of deaths?
• Looking at the figures of in-migration and out-migration which city has received more migrants?
• Calculate the population of both the cities in 2017.
• After considering all the points, which city has recorded more growth of population in one year?
• The total numbers of births are given. What would be this figure per thousand population? What is the term for this?
• What would be the number of deaths per thousand populations? What is the term used for this?
Answer:
• From the above data given, City B has got 2,750 of total newborn whereas city A has only got 2,000 of total newborn. Therefore, City B has got the greatest number of newborn children.
• From the above data given, City B has got 2,200 total numbers of deaths whereas city A has only got 1,500 total numbers of deaths. Therefore, city B has got the greatest number of deaths.
• From the above data given, City A has received 23,000 in-migrants and city B has received 15,000 in-migrants. Therefore, city A has received more migrants.
• From the above data given, the total population of both the cities in2017 = total population of city A in 2017 + total population if city B in 2017.
Total population in city A in 2017 = total population in 2016 of city A + total number of newborn children of city A – a total number of deaths of city A+ People who have migrated from outside - People who have migrated out.
Total population in city A in 2017 = 100000+2000-1500+23000-2000
Total population in city A in 2017= 121500
Total population in city B in 2017= total population in 2016 of city B + the total number of newborn children of city B– total number of deaths of city B + People who have migrated from outside - People who have migrated out.
Total population in city B in 2017= 110000+2750-2200+15000-5000
Total population in city B in 2017= 120550
Therefore, the total population of both the cities in2017 = total population of city A in 2017 + total population if city B in 2017.
The totalpopulation of both the cities in2017 = 121500+120550
The totalpopulation of both the cities in2017 = 242050
• From the data given above, city A has recorded a growth of 121500 and city b has recorded a growth of 120550. Therefore, city A has recorded more growth population in one year.
• The number of births per thousand population = total number of births / total number of population *1000
The number of births per thousand population = 2000/100000*1000
The number of births per thousand population= 20
The term used for this called the birth rate.
• The number of deaths per thousand population= total number of deaths/ total number of population *1000
The number of deaths per thousand population= 1500/100000*1000
The number of deaths per thousand population= 15
The term used for this is the death rate.
Question 2.
Even though area wise Rajasthan is a large state, the population is less. Which geographical factors may be responsible for this?
Answer:
Geographical factors such as climate and rainfall may be responsible for less population in Rajasthan. Rajasthan is a very dry state receiving less rainfall. This affects the agriculture and the livelihood of the people. The climate is dry and harsh. Therefore, even though Rajasthan is a large state the population is less.
Question 3.
Groups :
1.Male 2.Adoloscent3. Illiterate 4. Children 5. Unemployed 6. Infants 7. Literate 8.Rural 9.Working population 10. Urban 11. Female 12. Old 13. Young 14. Dependent population
15. Adult
Classify the above groups into the categories below Sex, Age, Rural, Urban, Literacy, Productive Population. The population can be subdivided as per the groups were given above. These subgroups and their relationship with one another is studied in the structure of the population.
Answer:
On the basis of sex: Male, female
On the basis of age: children, infants, adult
On the basis of rural: illiterate
On the basis of urban: urban
On the basis of literacy: literate
On the basis of productive population: adolescents, old, dependent population, working population, young
Question 4.
Have a class discussion based on the following questions.
• How many people in your house are studying? What is their age?
• How many people in your house are working for a living? How old are they?
• Do your grandparents still work? What is their age?
Answer:
• There are four people in my house who are studying and their ages are 14, 23, 47 and 53 years.
• There are two people in my house who is working, and his age is 53 years.
• No, my grandparents are not working anymore because they are retired from their jobs. Their ages are 70 years and 75 years.
Question 5.
• How do imbalanced sex ratios affect society?
• What measures can be taken to strike a balance in the sex ratio?
Answer:
• Imbalanced sex ratio occurs when the proportion of females is more than males, or the proportion of males is more than females due to migration. It can affect the birth rate of females and employment factor.
• 1. Measures such as encouraging the birth of girl child should be promoted.
2. The government should make sure that the ban on sex determination of the foetus is strictly implemented.
3. Strict actions should be taken against those involved in female infanticide and female foeticide.
Question 6.
Answer on basis of the given table.
Statistics 2010
• Which countries have less than 10% migrant population?
• Which are the countries with a migrant population of between 10% to 20%?
• Which are the countries with a migrant population of more than 20%?
• Find the reason behind the migrant population of more than 20%.
• Draw two pie diagrams for any two countries.
• Have a discussion on migration and development.
Answer:
• From the data given above,
Countries that have less than 10% migrant population:
1. Great Britain
2. India
3. Bangladesh
4. Brazil
5. Afghanistan
• From the data given above,
Countries that have a migrant population of between 10% to 20%:
1. Germany
2. USA
• From the data given above, Countries with a migrant population of more than 20% are as follows:
1. Kuwait
2. Hongkong
3. Israel
4. Oman
5. Saudi Arabia
• In some countries the migrant population is more due to the following reasons:
1. Job opportunities
2. Good business prospects
3. Better availability of natural resources
4. Steady economic development
5. lifestyle
6. good cost of living
7. good currency exchange rates
• The movement of an individual or a group from one place to another is termed as migration. This could be for a short period, long period or permanently.
1. The reasons why people migrate are as follows: Marriage, education, business, transfer, tourism, natural calamities, wars, etc.
2. Due to migration the composition of the population also changes.
3. Places from where people migrate show a fall in population. Such places experience a shortage of manpower.
Migration and development take place side by side. Development is the process by which the nation improves its economic, social and financial well being. Places which receive more migrants have a benefit of more manpower and working employs. This results in the development of that country.
Question 7.
Have a discussion on the basis of the following questions and answer the following.
• What would you call the people who work in the places mentioned below? farm, factory, hotel, hospital, shop, school, office
Answer:
• People who work on the farm: farmers
People who work in hotel: chefs, waiters
People who work in hospitals: doctors, nurse, pharmacists
People who work in shops: shopkeepers
People who work in school: teachers
People who work in an office: engineers, accountants, clerks
Question 8.
Study fig 7.5 and answer the following questions.
• Which are the most densely populated districts?
• Name the sparsely populated districts with a density of less than 100 per sq. km.
• Name two districts with moderate population densities
• What is the density of the dark shaded regions?
• Why is the density of the population less in Gadchiroli?
• Have a discussion in the class on the effect of physiography, climate, the area under forest, industries, etc on the density of population.
Answer:
• Palghar and Thane
• Gadchiroli
• Wardha, Yavatmal
• More than 1000 per sq. Km.
• The density of population is less in Gadchiroli because it is located in the eastern district and it is densely forested and rain shadowing.
• Referring to the fig. given above:
Effect of Industries: Higher density indicates urbanization and higher levels of industrialization. Therefore Mumbai city district and Mumbai suburb district, Thane, Pune, and Nagpur districts have a higher density.
Effect of the area under forest: The rain shadow districts as well as the districts in the extreme east which are densely forested show less density.
Effect of Physiographic: The reliefs and mountains determine the availability of natural resources
Effect of Climate: The climatic conditions of a place also determine the density of population.
Question 9.
Since the past two centuries, the size of a family is decreasing. But in spite of this, the population of the country is increasing. Find out why is this happening?
Answer:
Since the past two centuries the size of the family is decreasing, but in spite of this, the population of the country is increasing due to in-migration and lack of population control.
Question 10.
Have a discussion on population control with the help of the following points
Public education
Education
Public awareness
Health facilities
Planning
Government policies
Research
Answer:
Public education: By giving public education the population control can be achieved. It is very important for the public to be educated about the consequences of reproduction without planning. It is highly important for people to be aware of population control.
Education: Everyone should be given education regarding the importance of population control. It is essential to maintain population control for the betterment of the country and the family. It will help the nation and the people financially. Education will help them take responsible and sensible actions regarding population control.
Public awareness: Public awareness of the need for population control is highly essential. The public must be aware of the pros and cons of population control. Awareness must be spread regarding the need and how population control will lead to the betterment of the county.
Health facilities: Health facilities such as contraceptives and sex education must be provided for people to have a proper and correct understanding of reproduction. They should be taught about the importance and consequences of population control.
Planning: Proper planning steps must be taken to ensure population control. People should be taught about proper planning and the importance of it.
Government policies: Many government policies are introduced for the benefit of population control.
Research: A lot of researches are done regarding population control. Many products help in planning a child in the modern world.
