Population Pyramid: A graphical representation that shows the distribution of various age groups in a population. It helps visualize how demographic momentum can affect population growth.
Dependency Ratio: The ratio between economically dependent and economically productive individuals in a population. Demographic momentum can influence changes in the dependency ratio.
Demographic Transition: The process through which societies transition from high birth and death rates to low birth and death rates. Demographic momentum can be observed during this transition phase.