Population Growth and Pyramids PDF

Population Growth LO:By the end of this lesson, I will be able to determine what causes the increase in the population and the factors used to determine the growth. Review of the Previous lesson Migration Types of migration Urbanization (cause and effect) Impact New Terminology...

Population Growth LO:By the end of this lesson, I will be able to determine what causes the increase in the population and the factors used to determine the growth. Review of the Previous lesson Migration Types of migration Urbanization (cause and effect) Impact New Terminology Video https://youtu.be/mRcxGJc Doubling time BDVo?feature=shared. Scarcity Growth rates Birth Rate LEDCs and MEDCs Mortality rate Life expectancy Population growth Causes of Growth rates Effects Populations growth Challenges Numbers/statistic What began the The impact of the al figures that growth on the lives changes in the represent the of the people population growth growth?  How has Earth’s population become so large? What has caused our population to grow so quickly? Many factors cause populations to increase. One major cause of population growth is a falling death rate. The death rate is the number of deaths compared to the total number of individuals Causes in a population at a given time. On average, about 154,080 people die every day Of Population growth worldwide. The death rate has decreased for many reasons. Better health care, more food, and cleaner water have helped more people—young and old—live longer, healthier lives. Causes Another major cause of population In the past 60 years, the world’s growth is the global birthrate. The human birthrate has been birthrate is the number of babies born decreasing slowly, although the compared to the total number of global birthrate is still higher than the individuals in a population at a given time. On average, about 215,120 babies global death rate. This means that at are born each day worldwide. In time, any given time, such as a day or a the babies born today will mature and year, more births than deaths occur. have children and grandchildren of their This results in population growth. own. This is how more and more people join the human population with each passing day. What other factors contribute to population growth? Mention 2  In some countries, a high number of births has combined with a low death rate to greatly increase population growth. As a result, doubling time, or the number of years it takes a population to double in size based on its current growth rate, is relatively short. In some parts of Asia and Africa, for Growth rates example, the doubling time is relatively short—25 years or less. In contrast, the average doubling time of countries with slow growth rates, such as Canada, can be more than 75 years.  The birth rate, expressed as the number of live births per 1,000 people per year, is a fundamental max growth demographic indicator. It reflects the fertility level of a population Birth rate and is vital for planning resources and services.  The death rate indicates the number of deaths per 1,000 individuals per year. It is essential for understanding Mortality rate population health, longevity, and the effectiveness of healthcare systems in different reg  Life expectancy estimates the average age individuals are expected to live, reflecting overall Life Expectancy population health and healthcare access. It varies by region and is affected by lifestyle, environment, and medical care. Lesson 2 Population growth-Pyramids Previous lesson review Population growth Causes Factors /indicators of population growth Population pyramid Population pyramids visually represent the age and gender distribution of a population, offering insights into demographic trends Population pyramids can be categorized into three primary shapes: expansive, constrictive, and stationary. Each shape conveys unique insights about a population's growth patterns and age structure. The TWO TYPES Of Countries in pyramids YOU DO https://youtu.be/keUaC-oyX WU?feature=shared. Summary of the worlds Pyramids Dependency Ratio Types of Dependency Ratios Total Dependency Ratio: This includes both young and old dependents. Youth Dependency Ratio: This focuses on the number of young dependents (0-14) compared to working-age people. Old-Age Dependency Ratio: This focuses on the number of old dependents (65+) compared to working-age people. Why is it Important? Economic Burden: A high ratio means more people need support, which can strain the economy. Social Services: It affects the demand for services like education and healthcare. Labor Force: A shrinking working-age population can lead to labor shortages. Calculating the Dependency ratio (not for testing) Part 2- Analyzing the Population pyramids LO: Interpret the shape of a population pyramid: Students should be able to recognize different shapes (e.g., expansive, constrictive, stationary) and associate them with specific demographic trends (e.g., high birth rates, low death rates, aging populations). Previous lesson Review Population pyramids (Definition) What are they used for? Stages of the population pyramid Enhancement purposes  Population pyramid- usage in life CASE STUDIES OF https://www.youtube.com/wat DIFFERENT COUNTRIES ch?v=RLmKfXwWQtE. Explanation of the meaning of the pyramids