Population

Hello students, welcome to today's geography lesson. I'm so happy to see you all here, ready to learn about something really important - our country's population. Before we begin, let me ask you a question. Can you imagine a world without human beings? Just think about it. Who would have used all the resources around us? Who would have built our cities, our schools, our temples? Who would have created our diverse cultures and traditions? The answer is - nobody! This is why population is such an important topic in social studies. It is the point of reference from which we understand everything else - resources, calamities, disasters - all of these become meaningful only in relation to human beings. So today, we are going to study Chapter 6 - Population, and I promise you, by the end of this lesson, you will have a complete understanding of this chapter. Let's begin!

Now, let's think about our country - India. How many people live in India? According to the census data from March 2011, India's population was 1,210.6 million, which means about 1.21 billion people. This is more than 17 percent of the world's total population. Just imagine - out of every 100 people in the world, more than 17 are Indians! That's a huge number, isn't it?

Now, these 1.21 billion people are not spread evenly across our country. Our country covers an area of 3.28 million square kilometers, which is about 2.4 percent of the world's total area. So we have about 17 percent of the world's population living on just 2.4 percent of the world's land. This makes India one of the most densely populated countries in the world.

Let me tell you about how population is distributed across different states. According to the 2011 Census, Uttar Pradesh is the most populous state with a population of 199 million people. That's almost 16 percent of India's total population! On the other hand, Sikkim, which is a Himalayan state, has only about 0.6 million people. And can you believe that Lakshadweep, which is a group of beautiful islands, has only 64,429 people? That's even less than some of the towns in big cities!

Here's something very interesting - almost half of India's population lives in just five states. Can you guess which ones? They are Uttar Pradesh, Maharashtra, Bihar, West Bengal, and Andhra Pradesh. Now, here's a surprising fact - Rajasthan is the biggest state in terms of area, but it has only 5.5 percent of the total population of India. This shows how unevenly population is distributed across our country.

Now, you might be wondering - why is population distributed unevenly? This is a question for you to find out. Think about it - what could be the reasons? We'll discuss this later, but I want you to keep this question in your mind as we go through the lesson.

Now, let's talk about something called Census. What is a census? A census is an official count of people in a country, done periodically. In India, the first census was held in 1872, but the first complete census was taken in 1881. Since then, censuses have been held regularly every ten years. The Indian Census is the most comprehensive source of information about our population - it gives us details about demographics, social conditions, and economic status. If you get a chance, do check if your school library has a census report. It makes for very interesting reading!

Now, let's move on to understand population density. Population density is a better way to understand how population is distributed. It is calculated as the number of persons per unit area. When we say population density of an area is 382 persons per square kilometer, it means that on average, 382 people live in every square kilometer of that area.

According to the 2011 census, the population density of India was 382 persons per square kilometer. But this is just an average. The density varies a lot from state to state. For example, Bihar has a density of 1,102 persons per square kilometer - that is extremely high! On the other hand, Arunachal Pradesh has only 17 persons per square kilometer - that is very sparse. So you can see the huge difference in population density across our country.

Now, here's something interesting for you to find out - only Bangladesh and Japan have higher average population densities than India. Can you find out what the population densities of Bangladesh and Japan are? This will help you understand how crowded our country is compared to other countries.

Now, let's do an activity. Look at Figure 6.3 which shows population density across different states. Compare it with Figure 2.4 and Figure 4.7. Do you find any correlation between these maps? What I mean is - do areas with certain physical features tend to have similar population densities? Try to think about this.

Now, let's identify which states have population density below 250 persons per square kilometer. These states generally have rugged terrain and unfavorable climatic conditions. Can you name some of these states? The Northern Plains, on the other hand, have very high population densities because of their flat terrain, fertile soils, and abundant rainfall. Kerala in the south also has high population density for similar reasons. The three states of the Northern Plains with high population densities are Uttar Pradesh, Bihar, and Punjab. Assam and most of the Peninsular states have moderate population densities because of their hilly and rocky terrain, moderate rainfall, and less fertile soils.

Now, let's move on to a very important topic - Population Growth and Processes of Population Change. Population is not static - it keeps changing. The numbers, distribution, and composition of the population are constantly changing. This happens because of three main processes - births, deaths, and migrations. Let's understand each of these.

First, let's talk about population growth. Growth of population refers to the change in the number of inhabitants of a country during a specific period of time. This change can be expressed in two ways. The first is in terms of absolute numbers - this is simply the difference between the population at the beginning and at the end of the period. For example, if the population was 1,000 million in 2001 and became 1,210 million in 2011, the absolute increase is 210 million. The second way to express population growth is in terms of percentage change per year, which is called the annual growth rate. For example, if the population grows at 2 percent per year, it means that for every 100 people in the base year, 2 more people are added in that year.

Now, let's look at Table 6.1 which shows India's population growth from 1951 to 2011. In 1951, India's population was 361 million. It grew to 439.2 million in 1961, 548.2 million in 1971, 683.3 million in 1981, 846.4 million in 1991, 1,028.7 million in 2001, and 1,210.6 million in 2011. You can see that the population has been steadily increasing.

Now, look at the absolute increase column. In the decade 1951-1961, 42.43 million people were added. This increased to 78.15 million in 1961-1971, and kept increasing to 108.92 million in 1971-1981, 135.17 million in 1981-1991, 163.09 million in 1991-2001, and 182.32 million in 2001-2011. But wait - in 2011, the absolute increase was 181.46 million, which is slightly less than the previous decade. This is interesting!

Now, look at the annual growth rate column. From 1951 to 1981, the annual growth rate was steadily increasing - from 1.25 percent in 1951 to 2.22 percent in 1981. This explains why the population increased so rapidly from 361 million in 1951 to 683 million in 1981. However, since 1981, the growth rate has been declining gradually - from 2.22 percent in 1981 to 1.64 percent in 2011.

Now, here's an important question for you to think about. Table 6.1 shows that despite the decline in growth rates, the number of people being added every decade is steadily increasing. Why do you think this happens? The answer is that India has a very large population. Even a low annual rate, when applied to a large population, results in a large absolute increase. For example, if you have a population of 1 billion and it grows at just 1 percent, that's still 10 million people being added every year! So, when more than a billion people increase even at a lower rate, the total number being added becomes very large. This is why India's annual increase in population is still very large, even though the growth rate has declined.

The declining trend of the growth rate is actually a positive indicator - it shows that the efforts of birth control are working. However, because of our large population base, the total additions continue to be significant. In fact, in 2023, India overtook China to become the most populous country in the world!

Now, let's understand the three main processes that cause population change. These are birth rates, death rates, and migration.

Birth rate is the number of live births per thousand persons in a year. In India, birth rates have always been higher than death rates, which is why our population keeps growing. Death rate is the number of deaths per thousand persons in a year. The main reason for population growth in India has been the rapid decline in death rates, while birth rates remained high for a long time.

Till about 1980, high birth rates and declining death rates led to a large difference between the two, resulting in higher population growth. Since 1981, birth rates have also started declining gradually, which is why the rate of population growth has been declining. What are the reasons for this trend? Several factors have contributed to this - increased awareness about family planning, better education, higher income, and government policies promoting small families.

The third component of population growth is migration. Migration is the movement of people from one place to another. It can be internal (within the country) or international (between countries). Internal migration is very important because it changes the distribution of population within the country, even though it doesn't change the total population of the country.

In India, most migrations have been from rural to urban areas. Why do people migrate from villages to cities? There are "push" factors in rural areas - these include poverty, unemployment, lack of basic facilities, and agricultural distress. And there are "pull" factors in cities - these include better employment opportunities, better living conditions, better education and healthcare facilities.

Migration plays a very significant role in changing the composition and distribution of population. It changes not only the population size but also the age and sex composition of urban and rural populations. Because of rural-urban migration, the percentage of population living in cities and towns has been steadily increasing. In 1951, only 17.29 percent of India's population lived in urban areas. By 2011, this increased to 31.80 percent. That's almost one-third of our population living in cities now!

There has also been a significant increase in the number of "million plus cities" - cities with a population of more than one million. From 2001 to 2011, the number of such cities increased from 35 to 53. In 2023, there were 59 million plus cities in India. This shows how fast our urban population is growing.

Now, let's talk about the adolescent population. This is one of the most significant features of the Indian population. Adolescents are people between the ages of 10 and 19 years. Did you know that adolescents constitute one-fifth of India's total population? That's 20 percent of our population! This is a huge number.

Adolescents are the most important resource for the future of our country. However, they face several challenges. The nutrition requirements of adolescents are higher than those of a normal child or adult. But in India, the diet available to adolescents is often inadequate in all nutrients. A large number of adolescent girls suffer from anemia, which is a condition caused by iron deficiency. Their problems have not received adequate attention in the process of development. It's important to sensitize adolescent girls to the problems they face, and awareness can be improved through the spread of literacy and education.

Now, let's discuss the National Population Policy. The Government of India realized early that planning of families would improve individual health and welfare. So, in 1952, India initiated a comprehensive Family Planning Programme. This was one of the first such programs in the world! The Family Welfare Programme has sought to promote responsible and planned parenthood on a voluntary basis.

The National Population Policy (NPP) 2000 is a culmination of years of planned efforts. It provides a policy framework for several important objectives. Let me tell you about the main features of this policy.

First, it aims to impart free and compulsory school education up to 14 years of age. This is important because education helps people make better decisions about family size.

Second, it aims to reduce infant mortality rate to below 30 per 1000 live births. Infant mortality rate is the number of deaths of children under one year of age per 1000 live births. Lower infant mortality means people feel more secure about their children's survival and are more likely to have fewer children.

Third, it aims to achieve universal immunization of children against all vaccine-preventable diseases. This protects children from many deadly diseases.

Fourth, it promotes delayed marriage for girls. Early marriage leads to early childbearing, which can be harmful for both the mother and the child. The policy encourages girls to marry after they turn 18 or older.

Fifth, it aims to make family welfare a people-centered programme. This means that the focus is on the welfare of individuals and families, not just on controlling population growth.

Now, let's move on to the exercises at the end of the chapter. I want you to understand each question thoroughly, so I'll explain each one in detail.

Exercise 1: Choose the right answer from the four alternatives given below.

Question (i): Migrations change the number, distribution and composition of the population in which area?

The correct answer is (c) both the area of departure and arrival. When people migrate from one place to another, they leave the area of departure, so the population of that area decreases. They arrive at the area of arrival, so the population of that area increases. Migration also changes the composition - for example, it can change the age and sex composition of both areas. So, migrations affect both the area of departure and the area of arrival.

Question (ii): A large proportion of children in a population is a result of what?

The correct answer is (a) high birth rates. When birth rates are high, more children are born, leading to a larger proportion of children in the population. High life expectancy would mean more elderly people, not more children. High death rates would actually reduce the proportion of children. More married couples might lead to more births, but the direct cause of a large proportion of children is high birth rates.

Question (iii): The magnitude of population growth refers to what?

The correct answer is (b) the number of persons added each year. Magnitude refers to the absolute number - how many people are being added. The total population of an area is just the stock, not the growth. The rate at which the population increases is the growth rate, not the magnitude. The number of females per thousand males is the sex ratio, not related to magnitude.

Question (iv): According to the Census, who is considered a "literate" person?

The correct answer is (c) a person who is 7 years old and can read and write any language with understanding. The census definition of literacy is specific - a person aged 7 years or above who can read and write any language with understanding is considered literate. Just being able to read and write one's name is not sufficient. Knowing the 3 R's (reading, writing, arithmetic) is a popular saying but not the official census definition.

Now, let's look at Question 2: Answer the following questions briefly.

Question (i): Why is the rate of population growth in India declining since 1981?

The rate of population growth in India has been declining since 1981 due to several reasons. First, birth rates have been declining rapidly. This is because of increased awareness about family planning methods, better education especially among women, higher marriage age, and better standard of living. Second, the government has been implementing various population control programs and policies. Third, economic development has led to changes in people's attitudes - as people become more prosperous, they tend to have fewer children. However, it's important to note that even though the growth rate has declined, the absolute number of people being added is still very high because of our large population base.

Question (ii): Discuss the major components of population growth.

The three major components of population growth are birth rates, death rates, and migration. Birth rate is the number of live births per thousand persons in a year. Death rate is the number of deaths per thousand persons in a year. The difference between birth rate and death rate gives us the natural increase of population. When birth rate is higher than death rate, population grows. When death rate is higher than birth rate, population declines. Migration is the third component. When people migrate into a country, the population increases. When people migrate out of a country, the population decreases. In India, the main reason for population growth has been the difference between birth rates and death rates, with birth rates being higher than death rates.

Question (iii): Define age structure, death rate and birth rate.

Age structure refers to the distribution of population of a country or region across different age groups. It is usually expressed as the percentage of population in different age groups like 0-14 years, 15-59 years, and 60 years and above. Age structure is important because it affects the dependency ratio - the ratio of people in dependent ages (below 15 and above 60) to people in economically productive ages (15-60).

Death rate, also called mortality rate, is the number of deaths per thousand persons in a year. For example, if the death rate is 8, it means that out of every 1000 people in a year, 8 people die. Death rate has declined significantly in India over the years due to better healthcare, nutrition, and living conditions.

Birth rate, also called fertility rate, is the number of live births per thousand persons in a year. For example, if the birth rate is 20, it means that out of every 1000 people in a year, 20 babies are born. Birth rate in India has been declining but is still higher than in many developed countries.

Question (iv): How is migration a determinant factor of population change?

Migration is a very important determinant of population change. Here's how it works. When people migrate from one place to another, they affect the population of both places. The area they leave (area of departure) loses population, while the area they go to (area of arrival) gains population. Migration does not change the total population of a country in the case of internal migration, but it definitely changes the distribution of population within the country.

Migration also affects the composition of population. For example, when young people migrate from rural to urban areas, the rural area is left with more elderly people and children, while the urban area gets more young working-age people. This changes the age structure of both areas. Migration can also affect the sex ratio - for example, in some areas, more men migrate for work, leaving behind more women.

In India, rural-urban migration has led to rapid urbanization. This has created both opportunities and challenges - cities offer better employment and facilities, but they also face problems like congestion, pollution, and shortage of housing. Migration also leads to cultural exchange and diversity in cities.

Now, let's look at Question 3: Distinguish between population growth and population change.

Population growth and population change are related but different concepts. Population growth specifically refers to the increase in the number of inhabitants of a country or territory during a specific period of time. It is usually measured in terms of absolute increase (the number of persons added) or growth rate (percentage increase per year). Population growth is primarily driven by the difference between birth rates and death rates (natural increase) and migration.

On the other hand, population change is a broader term that includes not only the increase or decrease in numbers but also changes in the composition and distribution of population. Population change can occur due to births, deaths, and migration. It can also refer to changes in age structure, sex ratio, literacy rates, occupational structure, and other demographic characteristics. So, population growth is a part of population change, but population change is a more comprehensive term that includes all changes in population characteristics.

Question 4: What is the relation between occupational structure and development?

Occupational structure refers to the distribution of the working population across different occupations and sectors. The relation between occupational structure and development is very close. In less developed countries, a large proportion of the population is engaged in primary occupations like agriculture, forestry, and mining. As a country develops, there is a shift from primary occupations to secondary (manufacturing) and tertiary (services) occupations.

This shift is called structural transformation. When more people move from agriculture to industries and services, it indicates economic development. This is because secondary and tertiary sectors usually offer higher incomes and better employment opportunities. They also contribute more to the GDP of the country.

In India, we can see this trend - the percentage of population engaged in agriculture has been declining over the years, while the percentage in manufacturing and services has been increasing. However, India still has a large percentage of its workforce in agriculture compared to developed countries, which indicates that there is still scope for more development.

Question 5: What are the advantages of having a healthy population?

Having a healthy population brings many advantages to a country. First, a healthy population is more productive. When people are healthy, they can work more efficiently and contribute to economic growth. Second, a healthy population reduces the burden on healthcare systems and saves money that can be used for other development purposes. Third, healthy people live longer, which means more experienced workforce and greater contribution to society. Fourth, a healthy population, especially among women and children, leads to better maternal and child health outcomes, which in turn leads to lower population growth as healthier families tend to have fewer children.

Fifth, a healthy population improves the quality of life and overall well-being of people. Sixth, it leads to greater human capital formation - healthy people can learn better, innovate more, and contribute to technological advancement. Seventh, a healthy population attracts investment from other countries because it ensures a reliable workforce. Overall, a healthy population is essential for sustainable development and economic progress.

Question 6: What are the significant features of the National Population Policy 2000?

The National Population Policy 2000 has several significant features. Let me list them for you.

First, it aims to achieve universal immunization of children against all vaccine-preventable diseases. This protects children from diseases like measles, polio, and hepatitis.

Second, it aims to reduce infant mortality rate to below 30 per 1000 live births. This ensures that more children survive beyond their first year.

Third, it promotes delayed marriage for girls. The policy encourages marriage after the age of 18, which reduces teenage pregnancies and improves maternal health.

Fourth, it aims to provide free and compulsory school education up to 14 years of age. This helps in reducing population growth because educated people tend to have fewer children.

Fifth, it aims to achieve 100 percent registration of births, deaths, marriages, and pregnancies. This helps in maintaining accurate records and planning.

Sixth, it promotes family welfare programs on a voluntary basis, respecting the reproductive rights of individuals.

Seventh, it addresses the issue of adolescent health and nutrition, recognizing that adolescents are an important resource for the future.

Eighth, it aims to make family welfare a people-centered program, focusing on the overall well-being of families rather than just population control.

Now, let's look at the Project/Activity. The activity asks you to conduct a class census by preparing a questionnaire. The questionnaire should contain a minimum of five questions. The questions should relate to students, their family members, their class performance, their health, and so on. Each student is required to fill in the questionnaire. Then, you need to compile the information in numerical terms, in terms of percentage. Finally, you should present the information through a pie chart, bar diagram, or in any other way.

This is a great activity that will help you understand how census data is collected and analyzed. Let me give you some ideas for questions you could include in your questionnaire.

First question could be about the number of members in your family. Second question could be about the number of books you have read in the past year. Third question could be about your favorite subject in school. Fourth question could be about how you travel to school - by walking, by bus, by car, or by bicycle. Fifth question could be about your daily screen time - how many hours do you spend watching TV or using mobile phones. Sixth question could be about whether you have ever been to a village. Seventh question could be about what languages you speak at home.

After collecting all the responses, you can calculate percentages. For example, if 20 out of 40 students travel by bus, that's 50 percent. Then you can represent this data in a pie chart or bar diagram. This will give you a practical understanding of how population data is collected and presented.

Now, let's go through the glossary terms to make sure we understand all the important definitions.

Adolescence is a period in which a person is no longer a child and not yet an adult, typically between 10 to 19 years of age.

Alluvial plain is a level tract of land made up of alluvium or fine rock material brought down by a river.

Base population is the total population of an area at the beginning of a given time period.

Birth rate is the number of live births for every 1000 persons in a year.

Death rate is the number of deaths per 1000 persons in year.

Density of population is the average number of persons per unit area, such as a square kilometer.

Dependency ratio is the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

Growth rate of population indicates the rate at which the population is growing. It is measured annually or over a decade.

Migration is movement of people from one place to another. Internal migration means movement within a country, and external migration means movement between countries. When people come to a country, it's called immigration; when they leave, it's called emigration.

Million plus cities are cities with a population of more than one million or 10 lakh.

Sex-ratio is defined as the number of females per thousand males.

Life expectancy is the average number of years one is expected to live.

Now, let me give you a quick recap of everything we've learned in this chapter.

In this chapter, we learned that population is a pivotal element in social studies. We learned about India's population size - 1.21 billion people in 2011, which is more than 17 percent of the world's population. We learned that population is unevenly distributed across India, with Uttar Pradesh being the most populous state and states like Sikkim and Lakshadweep having very small populations.

We learned about population density - the number of persons per square kilometer. India's average population density is 382 persons per sq km, but it varies greatly - from 1,102 in Bihar to only 17 in Arunachal Pradesh.

We learned about population growth - how it can be measured in absolute numbers and in terms of annual growth rate. We saw that from 1951 to 1981, the growth rate was increasing, but since then it has been declining. However, because of our large population base, the absolute numbers being added are still very high.

We learned about the three processes of population change - birth rates, death rates, and migration. We saw how birth rates have been declining and how migration, especially from rural to urban areas, has been changing the population distribution.

We learned about the adolescent population - how they constitute one-fifth of India's population and face challenges related to nutrition and health.

We learned about the National Population Policy 2000 and its objectives - universal immunization, reducing infant mortality, promoting delayed marriage, and providing compulsory education.

Finally, we learned how to calculate population density, understand population growth, and analyze population data.

This is a very important chapter that helps us understand ourselves - who we are, where we live, and how we are changing as a nation. Population data helps the government plan for schools, hospitals, roads, and all other facilities that we need.

Thank you so much for listening to this lesson attentively. I hope you have understood all the concepts clearly. Remember, population is not just a number - it represents real people, real families, and real futures. Understanding population dynamics helps us build a better India. Keep studying hard, and I'll see you in the next lesson!