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USA TODAY® Related Activities
USA TODAY Related
Activities provides activities related to the concept of the lesson
as well as up-to-date Snapshot data.
Population Explosions
Materials: calculator,
compass, protractor, straightedge, and colored pencils
Work alone or in a group of two or three.
The table shows some of the countries in the world
with the greatest populations. The populations for 2002 are given for
each country and the projected populations for 2050. Also given are
the 2002 total world population and the 2050 projected total world population.
| Country |
2002
Population |
2050
Projected Population |
| China |
1,284,304,000 |
1,322,435,000 |
| India |
1,045,845,000 |
1,706,951,000 |
| United
States |
280,562,000 |
394,241,000 |
| Indonesia |
232,073,000 |
330,566,000 |
| Brazil |
176,030,000 |
228,145,000 |
| Nigeria |
129,935,000 |
337,591,000 |
| Japan |
126,975,000 |
101,334,000 |
| Total
World |
6,234,250,000 |
9,104,206,000 |
Procedure for the Activity
| Step 1 |
Use the population
data for 2002. Find the percent of the total world population represented
by each of the seven countries or categories. Since the entire world
population is not represented by the seven countries given, find
the percent of the total world population represented by all of the
other countries. Name this category Other. Round the percents to
the nearest whole number.
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| Step 2 |
Find the measures
of the central angles for each country, or category, and for the
category Other. Round the measures of the angles to the
nearest whole number.
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| Step 3 |
Make a circle graph
for 2002 population data.
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| Step 4 |
For the graph you
made in Step 3, use the categories to identify any arcs that are
congruent.
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| Step 5 |
Use the projected
population data for 2050. Find the percent of the total world population
represented by each of the seven countries or categories. Be sure
to include a category named Other for the population of
all other countries. Round the percents to the nearest whole number.
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| Step 6 |
Using the percents
you found in Step 5, find the measures of the central angles for
each country or category and for the category Other. Round the measures
of the angles to the nearest whole number.
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| Step 7 |
Make a circle graph
for the projected 2050 population data.
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| Step 8 |
For the graph you
made in Step 7, use the categories to identify any arcs that are
congruent.
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| Step 9 |
Of the seven countries
given, which country will experience the greatest percent of increase
in population from 2002 to 2050? Explain how you found your answer.
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| Step 3 |
Make a circle graph
for 2002 population data.
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| Step 4 |
For the graph you
made in Step 3, use the categories to identify any arcs that are
congruent.
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| Step 5 |
Use the projected
population data for 2050. Find the percent of the total world population
represented by each of the seven countries or categories. Be sure
to include a category named Other for the population of all other
countries. Round the percents to the nearest whole number.
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Wrapping Up the Activity
Write a paragraph comparing the population data
for 2002 and the projected population data for 2050. Use your circle
graphs to help you describe the data.
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