As this locomotive steams along, it uses thermal energy to do the work of climbing a hill.
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What is thermal pollution and how can it be reduced?
Research thermal pollution on the Internet. Find out why all heat engines produce thermal pollution, and identify sources of thermal pollution in your area. Use this information to post a comment to a local blog or an online news article about the environment. Explain thermal pollution in a way that the general public will understand, and suggest how individuals and organizations can help reduce thermal pollution.
How do science concepts apply to your world? Here are some questions you'll be able to answer after you read this chapter.
When a car has been warmed by the sun, why is the metal door hotter than the plastic bumper? (Section 16.1)
Why doesn't hot air burn your unprotected arm when you reach into an oven? (Section 16.2)
Why does a bicycle pump heat up when you pump up a tire? (Section 16.2)
What energy-saving strategies are used in a solar-heated home? (page 484)
Why must a car engine have a cooling system? (Section 16.3)
Can you cool a kitchen by leaving the refrigerator door open? (Section 16.3)