Class 8 Social Science - KERALA
Dynamics of Population
The chapter 'Dynamics of Population' in Class 8 Kerala SCERT Social Science explores the changing nature of human populations. It covers vital concepts such as population growth, distribution, density, and the factors influencing them, including birth rate, death rate, and migration. Students will learn how population is both a resource and a challenge for a country. This chapter is very important for the Kerala State Board exams as it frequently features in objective questions, short answers, and map-based analysis of population density.
Start Learning FreeKey Concepts
Population Distribution
The way in which people are spread out across the Earth's surface, which is uneven due to physical and economic factors.
Population Density
The average number of people living in a square kilometre of area, calculated to understand how crowded a region is.
Birth Rate (Natality)
The number of live births per one thousand people in a population over a specific period, usually one year.
Death Rate (Mortality)
The number of deaths per one thousand people in a population over a specific period, usually one year.
Migration
The movement of people from one place to another, involving emigration (leaving a place) and immigration (settling in a new place).
Important Formulas
Board Exam Info
In the Kerala (SCERT) Class 8 Social Science examinations, this chapter generally carries around 4 to 6 marks. Common question types include defining population terms, calculating population density based on given data, and explaining the factors affecting population distribution.
Frequently Asked Questions
Why is population distribution uneven across the world?
Population distribution is uneven because people prefer to live in areas with favorable climate, flat land, fertile soil, water availability, and job opportunities, while rugged mountains, deserts, and dense forests remain thinly populated.
How does migration affect population change?
Migration changes the size and structure of a population by adding people through immigration and reducing them through emigration, while also impacting the demographic profile of both the origin and destination regions.
What is the difference between birth rate and death rate?
Birth rate is the number of live births per 1,000 people in a year, which increases population, whereas death rate is the number of deaths per 1,000 people in a year, which decreases population.
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