Multiple Choice
Which of the following units is commonly used to measure energy in the International System of Units (SI)?
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8. Thermochemistry
Nature of Energy
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Which of the following is an example of low-quality energy?
A
Nuclear energy in uranium
B
Electricity in a power line
C
Chemical energy in gasoline
D
Heat dispersed in the atmosphere
Verified step by step guidance1
Understand the concept of energy quality: High-quality energy is organized and can be used efficiently to do work, while low-quality energy is disorganized and less useful for performing work.
Analyze each option in terms of energy quality: Nuclear energy in uranium is highly concentrated and can be harnessed efficiently, so it is high-quality energy.
Electricity in a power line is organized energy that can be directed and used effectively, making it high-quality energy.
Chemical energy in gasoline is stored in molecular bonds and can be converted efficiently into mechanical work, so it is also high-quality energy.
Heat dispersed in the atmosphere is spread out and random, making it low-quality energy because it cannot be easily harnessed to do useful work.
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