Imagine you’re driving along a road and you approach a bridge. You notice a sign that reads, “Bridge freezes before road.” Why do bridges become covered with ice before roads do? Research this question and respond in depth, writing a full paragraph. Be sure to include examples. At the end of your response, provide at least two authoritative sources that you used in your research.
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Thermodynamics
Thermodynamics is the branch of physics concerned with a system’s energy and work. Scientists became interested in thermodynamics back in the eighteenth and nineteenth centuries, with the birth of the Industrial Revolution. Use online or print resources to answer the following questions about the importance of thermodynamics. Cite at least three authoritative resources to support your responses.
Part A
You’ve learned about the laws of thermodynamics. Using examples, explain why the first and second laws are significant for living organisms.
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Part B
Heat engines were first envisioned and built during the Industrial Revolution. Explain the thermodynamics of a heat engine, commenting on its efficiency.
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Part C
Heat pumps and refrigerators are modern conveniences that came from the study of thermodynamics. In a paragraph, explain how they work.
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Global Warming
Scientists are actively studying what amount of the greenhouse gases present in the atmosphere is a result of human activity. Research greenhouse gases and global warming to answer the questions below. Document at least three authoritative sources.
Part A
What evidence is there that the use of fossil fuels, which produce carbon dioxide, is causing climate change?
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Part B
Describe how computer climate models help scientists understand possible future climate changes. How reliable are these computer models in making predictions about global warming? Discuss any limitations in these models.
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Part C
What can you do? Read up on the issue and discover ways you can reduce the human “carbon footprint” on the planet. Include four examples of what can be done in homes and in the community. Cite your sources.
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Part D
Many people believe that if the human race continues to use energy as we are now, without change, we’ll witness a significant worldwide environmental impact in this century. Research this topic and discuss this possibility. Include concrete examples of specific environmental consequences of global warming.
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