12 Questions
What is an example of heat flow?
Boiling water cools surroundings
According to the 2nd law of thermodynamics, what theoretical efficiency is never attained?
100% efficiency
If a coal-burning power plant can convert 1 ton of coal, containing 28,000 megajoules of chemical energy, into 7,000 MJ of electricity, what is the efficiency of the conversion?
0.25%
In terms of quality, what type of energy is heat?
Low-quality
What is happening to the entropy of the Universe over time?
Increasing
What are some of the advantages and disadvantages of nuclear power?
Not versatile and hazardous
What is the definition of potential energy?
Energy of position
According to the first law of thermodynamics, what can be done with energy?
It can be transformed from one form to another
What does the second law of thermodynamics state about entropy?
Entropy is the measurement of order
What is the primary reason why gasoline is considered a high-quality energy source?
It is easy to convert into work or heat
Why are wood and example of a low-quality energy source?
They are difficult for work use due to low energy concentration
In terms of heat flow, what is another statement of the 2nd law of thermodynamics?
"Heat cannot pass from a cooler body to a hotter body without extra input of energy"
This quiz covers the basics of energy and the laws of thermodynamics, including the definition of potential and kinetic energy, the first law of thermodynamics stating energy conservation, and examples of energy transformations. Test your knowledge on energy fundamentals!
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