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What is Population Growth (geography)?
Grade Level:
Class 7
Law, Civic Literacy, Economics, FinTech, Geopolitics, Personal Finance, Indian Governance
Definition
What is it?
Population growth is the increase in the number of people living in a particular area, like a city, state, or country, over a specific period. It happens when more people are born or move into an area than those who die or move out.
Simple Example
Quick Example
Imagine your school had 1000 students last year. This year, 150 new students joined Class 1, and 50 students left after Class 12. So, the total number of students in your school has grown. This is similar to how a country's population grows.
Worked Example
Step-by-Step
Let's calculate the population growth for a small town:
Step 1: Find the population at the beginning of the year. Let's say it was 50,000 people.
---Step 2: Find the number of births during the year. Let's say 1,200 babies were born.
---Step 3: Find the number of deaths during the year. Let's say 700 people died.
---Step 4: Find the number of people who moved into the town (immigrants). Let's say 400 people moved in.
---Step 5: Find the number of people who moved out of the town (emigrants). Let's say 300 people moved out.
---Step 6: Calculate natural increase = Births - Deaths = 1200 - 700 = 500.
---Step 7: Calculate net migration = Immigrants - Emigrants = 400 - 300 = 100.
---Step 8: Calculate total population growth = Natural Increase + Net Migration = 500 + 100 = 600 people.
Answer: The town's population grew by 600 people during the year.
Why It Matters
Understanding population growth helps governments plan for schools, hospitals, and jobs, which links to Law and Indian Governance. It also impacts how much food, water, and resources are needed, affecting Economics and FinTech for future investments. Many careers like urban planners, demographers, and policy makers use this concept daily.
Common Mistakes
MISTAKE: Thinking population growth only means more births. | CORRECTION: Population growth also includes people moving into an area (immigration) and subtracts people moving out (emigration) and deaths.
MISTAKE: Confusing population growth with population size. | CORRECTION: Population size is the total number of people at one time, while population growth is how much that number changes over a period.
MISTAKE: Assuming population growth is always a good thing. | CORRECTION: While more people can mean more workers, very rapid growth can also put a strain on resources like water, housing, and electricity, leading to challenges.
Practice Questions
Try It Yourself
QUESTION: A village had 2,000 people. In one year, 50 babies were born and 20 people died. No one moved in or out. What was the population growth? | ANSWER: 30 people
QUESTION: A city started with 1 lakh (100,000) people. Over a year, 2,500 babies were born, 1,000 people died, 800 people moved into the city, and 300 people moved out. What is the total population at the end of the year? | ANSWER: 102,000 people
QUESTION: In 2020, Country X had a population of 10 crore. In 2021, births were 15 lakh, deaths were 8 lakh, immigration was 4 lakh, and emigration was 2 lakh. Calculate the percentage population growth for 2021. | ANSWER: 0.9%
MCQ
Quick Quiz
Which of these factors contributes to an increase in population growth?
High death rate
More people moving out (emigration)
More births than deaths
Fewer people moving in (immigration)
The Correct Answer Is:
C
Population growth occurs when more people are added than removed. More births than deaths directly increases the population. High death rates, more emigration, and fewer immigrants would all lead to slower growth or even a decrease.
Real World Connection
In the Real World
The Census of India, conducted every 10 years, collects data on population growth, births, deaths, and migration across all states and districts. This massive exercise helps the Indian government plan everything from new railway lines and national highways to allocating funds for healthcare and education schemes like the Mid-Day Meal program.
Key Vocabulary
Key Terms
BIRTH RATE: Number of live births per 1,000 people in a year | DEATH RATE: Number of deaths per 1,000 people in a year | IMMIGRATION: People moving into a country or region | EMIGRATION: People moving out of a country or region | CENSUS: An official count or survey of a population, typically recording various details of individuals.
What's Next
What to Learn Next
Next, you can explore 'Factors Affecting Population Distribution' to understand why people choose to live in certain areas more than others. This will help you see how population growth connects to where people settle and why.
