real-world applications - MathnMind

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REAL-WORLD APPLICATIONS
STUDENT ACTIVITY for Transparency 1
Use with Lesson 1-8.
About the World’s Major Producers and Consumers of Primary Energy
Many everyday activities of Americans are extremely energy dependent. For example, think
about a mathematics classroom in an energy sense. Having the lights on consumes electricity.
The air temperature is regulated by heating and cooling systems that directly or indirectly
consume fossil fuels. Pens, pencils, and calculators are manufactured by machines that require
energy to operate. There are many other ways that energy is used directly or indirectly.
The amount of energy a person consumes and the amount of energy that needs to be produced
on an individual’s behalf may be reduced through improved energy efficiency. New, more
efficient light bulbs, appliances, and household products are becoming increasingly available
to consumers. Until technology catches up with energy consumption, however, turning off
unnecessary lights and being more energy conscious are steps in the right direction.
Directions: Use what you have seen and read to answer the following questions.
1. Which countries shown in the graphs consume more energy than they produce? United States,
China, Japan, Germany, India, France, and Brazil consume more energy than they
produce.
2. Which countries produce more energy than they consume? Russia, Saudi Arabia, Canada,
United Kingdom, Iran, Mexico, and Australia produce more energy than they
consume.
3. In 1999, the United States and Russia combined to produce 30% of the world’s energy. How much
energy was produced in the world in 1999? In 1999, 379.4 quadrillion Btu of energy were
produced.
4. In that same year, the United States, China, and Russia consumed 41% of the world’s energy. How
much energy was consumed in the world in 1999? In 1999, 377.9 quadrillion Btu were
consumed.
Making the Connection
5. Working together with your family members, estimate how much money your family spends each year
on energy. See students’ work.
© Glencoe/McGraw-Hill T1 Glencoe Algebra 1