GEOG 102 Map Exercise 2: Demographics
1. Turn to p. 48-49.
What are the units of measure for population density? # of people per area
Write several sentences to describe the geographical distribution of high and low population density areas throughout the entire world.
The continental margins of the Northern Hemisphere contain most of the areas of high population density. East Asia, South Asia and Europe are the 3 large areas of high population density, also called Great Population Clusters. Large areas of low population density are found in regions of high latitude and high elevation. Also, desert regions such as the Sahara, Arabia, Central Australia have low population densities, as do Earth's remaining large tropical rainforest regions.
2. Look at the population pyramids at the bottom of p. 49. According to those pyramids what do you think will happen to the US’s and India’s respective shares of Earth’s people? US=decrease; India=increase;
Why? younger population in India
3. Look at the bar graphs below the Natural Increase map
on p. 51. In 2000 what percentage of the world’s people live in Asia? 60.5%
What percentage of the world’s people lived in the North America? 8%
4. Look at p. 50. What kind of thematic maps are these? Choropleth
5. What is the unit of measure for the birth rate? # of births/1000/year What data would you need to calculate a country’s birth rate? number of births during one year and the total population
Write several sentences to describe and explain the geographical pattern shown. In which regions is the CBR high? In which regions is the CBR low?
High birth rates are found in the poor countries of the tropical world. Low birth rates are found in the wealthy, industrialized countries of the mid-latitude Northern Hemisphere.
6. What is the unit of measure for the death rate? # of deaths/1000/yearWhat data would you need to calculate a country’s death rate? number of deaths during one year and the total population
Write several sentences to describe and explain the geographical pattern shown. In which regions is the CDR high? In which regions is the CDR low?
This pattern is more complex than the one shown on the CBR map. Low death rates are found in some poor countries. High death rates are found in some poor countries. High death rates are found in some wealthy countries.
7. Use the crude birth (CBR) and death rates (CDR) provided below to calculate the rate of natural increase (RNI) and doubling times.
Rate of Natural Increase = CBR - CDR (expressed as a percentage). Doubling Time = 70/RNI
Ex: Country Crude Birth Rate Crude Death Rate
Sweden 10 9
RNI = 10/1000 - 9/1000 = 1/1000 = 0.1%
Calculate RNI by moving the decimal point one space to the left of the fraction’s numerator (that’s the upper number in the fraction, in this example 1) and put a % on the right.
Doubling Time = 70/0.1 = 700 years
Country Crude Birth Rate Crude Death Rate RNI Doubling Time
Afghanistan __41/1000___ __17/1000____ _2.4% ___29____
Honduras __32/1000___ __6/1000____ _2.6% ___26.9__
Italy __9/1000____ __10/1000____ ____ __________
US __14/1000____ __8/1000____ _.6% ___116____