Harnessing the Power of Ocean Waves
1. “Water is currently the leading renewable energy source used by electric utilities to
generate electric power.â€
Energy Information Administration (EIA)
2. A predominant source of hydroelectric power is moving water-the water that runs in rivers, streams, and other waterways. The moving water turns turbines, which can resemble large propellers or fan blades. As a turbine spins, an axle at its center also spins. Machines then use this constant spinning motion to convert the energy of the moving water into electricity. On a larger scale, the world's oceans are also moving-in currents throughout these vast bodies of water, and as waves along hundreds of thousands of miles of coastline. As with land-based waterways, the power of ocean waves could be used to produce electricity. Currently, the technology exists to meet a significant portion of the world's energy demands by converting wave power to electricity.
Methods for Capturing Wave Power
3. There are several types of devices used to capture ocean wave power, such as point absorbers, terminators (also called oscillating water columns'), and attenuators? (see Table 1). Additionally, there are several methods and locations of deployment for these devices, including fixed and floating, and onshore, near shore, and offshore. Together, the wave-capturing device, the deployment method, and the deployment location determine the amount of energy captured and available for conversion into electricity. See Table 1 for examples of wave-capturing devices, deployment methods, and deployment locations.
Advantages and Disadvantages
4. As with any technology that converts our world's resources to energy, there are advantages and disadvantages to using ocean wave power. Supporters of the technology point to a critical advantage-ocean wave power does not release heat-trapping gases into the atmosphere. Additionally, if ocean wave power provides a portion of the electricity currently being met by fossil fuel power, then fewer fossil fuels will be burned and, in turn, fewer heat-trapping gases will be released. Thus, ocean wave power can lead to a reduction in heat-trapping gases accumulating in the atmosphere. Proponents of using ocean waves to generate power cite another advantage: the technology does not use or waste water, but merely displaces it.
5. These arguments are countered by opponents of ocean wave power, who contend that disadvantages of using waves to generate electricity are more numerous than the advantages. They argue that the technology is likely to disrupt marine ecosystems and introduce pollutants into marine waters. Specifically, energy collection and conversion devices may disrupt migratory patterns, expose marine animals to risk of entanglement in the equipment, and repel or attract species to such a degree that ecosystems are thrown out of balance. Adversaries of the technology do not limit their argument to the environmental impact of ocean wave technology. Instead, they claim that deploying ocean wave devices could also disrupt the relationships that people have with the oceans by ruining their views of the seaside.
6. Whether one is a proponent or opponent of harnessing the ocean's wave power for our own use, it is clear that there are benefits and pitfalls to the technology. Advocates of ocean wave power argue that cleaner energy production is worth the risk of disrupting marine habitats. But people who challenge the use of ocean wave power counter that any risk to our fragile ecosystems is too much of a risk.
In paragraph 5 the author states that opponents of wave technology 'claim that deploying ocean wave devices could also disrupt the relationships that people have with the oceans...' To what extent is this claim supported?
- A. It is unsupported because the author follows the claim with subjective information.
- B. It is unsupported because the author follows the claim with a counterexample that disproves it.
- C. It is well supported because the author follows it with facts and objective evidence.
- D. It is well supported because the author follows it with scientific data that furthers the claim.
Correct Answer & Rationale
Correct Answer: A
The claim about ocean wave devices disrupting relationships is unsupported, as the author follows it with subjective information rather than objective evidence. Option B is incorrect; there is no counterexample provided that disproves the claim. Option C is also wrong, as the author does not present factual or objective evidence to bolster the assertion. Option D misinterprets the text by suggesting that scientific data supports the claim, while in reality, the subsequent information lacks the necessary objectivity to substantiate it effectively.
The claim about ocean wave devices disrupting relationships is unsupported, as the author follows it with subjective information rather than objective evidence. Option B is incorrect; there is no counterexample provided that disproves the claim. Option C is also wrong, as the author does not present factual or objective evidence to bolster the assertion. Option D misinterprets the text by suggesting that scientific data supports the claim, while in reality, the subsequent information lacks the necessary objectivity to substantiate it effectively.
Other Related Questions
According to details in both the speech and the blog, which right was not granted for more than a century?
- A. women's right to receive a formal education
- B. women's right to practice law nationwide
- C. women's right to equal protection under the law
- D. women's right to own property in their own name
Correct Answer & Rationale
Correct Answer: C
The right to equal protection under the law was not granted to women for over a century, as it was only recognized with the passage of the 14th Amendment in 1868 and further solidified through various court rulings. Option A is incorrect because women began receiving formal education in the 19th century, although access was limited. Option B is also wrong; women could practice law in some states earlier than the 20th century, although it varied widely. Option D is misleading, as some women could own property in their own name through state laws, though restrictions existed. Thus, equal protection remained the most significant right denied for the longest duration.
The right to equal protection under the law was not granted to women for over a century, as it was only recognized with the passage of the 14th Amendment in 1868 and further solidified through various court rulings. Option A is incorrect because women began receiving formal education in the 19th century, although access was limited. Option B is also wrong; women could practice law in some states earlier than the 20th century, although it varied widely. Option D is misleading, as some women could own property in their own name through state laws, though restrictions existed. Thus, equal protection remained the most significant right denied for the longest duration.
According to paragraphs 1 and 2 of 'The Letter of the Law,' Lilly Ledbetter worked for Goodyear for nearly 20 years; however, conflict arose in 1998 when Ledbetter was nearing retirement. What can the reader infer from the information in these paragraphs?
- A. Women at Goodyear received fewer promotions than men.
- B. Male supervisors were indifferent about the salaries paid to the female supervisors.
- C. Company policy made it easier for Goodyear to violate the law.
- D. Female employees performed less strenuous tasks than their male counterparts
Correct Answer & Rationale
Correct Answer: C
The inference that company policy made it easier for Goodyear to violate the law aligns with the context of conflict arising as Lilly Ledbetter approached retirement. This suggests systemic issues that may have facilitated unfair practices. Option A, while plausible, lacks direct evidence from the text regarding promotions. Option B assumes indifference without supporting details about supervisors’ attitudes toward salaries. Option D inaccurately generalizes the nature of tasks assigned to female employees, which is not mentioned in the paragraphs and does not directly relate to the conflict described.
The inference that company policy made it easier for Goodyear to violate the law aligns with the context of conflict arising as Lilly Ledbetter approached retirement. This suggests systemic issues that may have facilitated unfair practices. Option A, while plausible, lacks direct evidence from the text regarding promotions. Option B assumes indifference without supporting details about supervisors’ attitudes toward salaries. Option D inaccurately generalizes the nature of tasks assigned to female employees, which is not mentioned in the paragraphs and does not directly relate to the conflict described.
Which claim made by the author is unsupported in the article?
- A. People want landfills located as far from their homes and businesses as possible.
- B. The Gregory brothers' company is different from other trash disposal companies.
- C. The Gregory brothers reach out to the community in numerous ways.
- D. Some trash disposal companies act in their own self-interests.
Correct Answer & Rationale
Correct Answer: A
Option A lacks direct evidence in the article, making it unsupported. While the desire for landfills to be distant from homes is a common sentiment, the article does not provide specific claims or data to back this assertion. Option B is supported by the article, which highlights unique practices of the Gregory brothers' company compared to others in the industry. Option C is also backed by examples of community outreach mentioned in the text, illustrating the brothers' engagement efforts. Option D is substantiated through discussions of industry practices, indicating that some companies prioritize self-interests over community needs.
Option A lacks direct evidence in the article, making it unsupported. While the desire for landfills to be distant from homes is a common sentiment, the article does not provide specific claims or data to back this assertion. Option B is supported by the article, which highlights unique practices of the Gregory brothers' company compared to others in the industry. Option C is also backed by examples of community outreach mentioned in the text, illustrating the brothers' engagement efforts. Option D is substantiated through discussions of industry practices, indicating that some companies prioritize self-interests over community needs.
And no one could have made any mistake about it but one who had something of the same kind in his head.' In this sentence, Sancho Panza is stating that
- A. he and Don Quixote have a relationship that
- B. he and Don Quixote think alike.
- C. Don Quixote makes hasty decisions.
- D. Don Quixote has a distorted vision of the world.
Correct Answer & Rationale
Correct Answer: D
Sancho Panza's statement implies that only someone with a similar mindset could misinterpret the situation, suggesting that Don Quixote's perspective is skewed. This indicates a distorted view of reality, aligning with option D. Option A is incorrect as it suggests a broader relationship without addressing the specific context of perception. Option B implies that they share thoughts, which does not capture the essence of misunderstanding. Option C focuses on decision-making rather than perception, failing to recognize the core issue of distorted vision. Thus, the emphasis is on Don Quixote's flawed worldview, making option D the most accurate interpretation.
Sancho Panza's statement implies that only someone with a similar mindset could misinterpret the situation, suggesting that Don Quixote's perspective is skewed. This indicates a distorted view of reality, aligning with option D. Option A is incorrect as it suggests a broader relationship without addressing the specific context of perception. Option B implies that they share thoughts, which does not capture the essence of misunderstanding. Option C focuses on decision-making rather than perception, failing to recognize the core issue of distorted vision. Thus, the emphasis is on Don Quixote's flawed worldview, making option D the most accurate interpretation.