CH 4: Non-conventional Energy Sources - Solar Radiation
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Questions and Answers

What is a major shift occurring in the energy landscape in South Africa?

  • Construction of additional coal-powered stations
  • Increased reliance on coal power plants
  • Growing debate on biofuels affordability
  • Advancements in solar and wind power technologies (correct)

    • Which energy innovation is estimated to have a significantly higher energy potential than humanity's annual consumption?

  • Underwater Kites
  • Artificial Photosynthesis
  • Solar Buildings
  • High Altitude Wind Power (correct)

    • What is one of the key benefits of solar power mentioned in the text?

  • Clean energy production
  • Air pollution during operation (correct)
  • Potential harm to wildlife
  • Visual impact challenges

    • Why do biofuels stir debate according to the text?

    <p>Impact on commodity prices (C)</p> Signup and view all the answers

    What percentage of new electricity generation in South Africa is expected to come from renewable energy over the next two decades?

    <p>42% (C)</p> Signup and view all the answers

    Which innovation involves kite-like devices anchored to the seafloor for energy generation?

    <p>Underwater Kites (B)</p> Signup and view all the answers

    What is one environmental concern related to solar power according to the text?

    <p>Environmental impacts in production and disposal (C)</p> Signup and view all the answers

    What is the main mechanism for converting solar power into electricity?

    <p>Photovoltaics (A)</p> Signup and view all the answers

    Which of the following is NOT mentioned as a non-conventional energy source?

    <p>Coal (D)</p> Signup and view all the answers

    What is the potential of the sun's energy output in a single hour?

    <p>To power the entire Earth for a year (C)</p> Signup and view all the answers

    Which country embarked on renewable energy initiatives through wind and solar power projects in 2011?

    <p>South Africa (A)</p> Signup and view all the answers

    What is the capacity of each of the Sere wind and Upington solar power projects in South Africa?

    <p>100 MW (B)</p> Signup and view all the answers

    Which element, derived from sand, plays a crucial role in converting solar energy into electricity?

    <p>Silicon (A)</p> Signup and view all the answers

    What can generate as much solar power as burning 500,000 tons of coal?

    <p>$1$ ton of sand silicon (A)</p> Signup and view all the answers

    What is the total value of the deal signed by South Africa for renewable energy projects in November 2011?

    <p>$1.9$ billion (D)</p> Signup and view all the answers

    In terms of energy output, what significant step does the Sere wind and Upington solar power projects mark for South Africa?

    <p>Diversifying energy sources (B)</p> Signup and view all the answers

    What resource can provide an immense amount of solar energy without being extensively used?

    <p>Solar Radiation (C)</p> Signup and view all the answers

    What is the cornerstone of the planet's available non-conventional energy resources?

    <p>Solar radiation (C)</p> Signup and view all the answers

    Which material plays a crucial role in generating an electrical charge when exposed to significant sunlight in photovoltaic cells?

    <p>Silicon (B)</p> Signup and view all the answers

    What does the text suggest about the current utilization of solar energy potential?

    <p>It remains largely untapped (A)</p> Signup and view all the answers

    What distinguishes the Sere wind power and Upington solar power projects in South Africa?

    <p>They are significant renewable energy initiatives (D)</p> Signup and view all the answers

    How does photovoltaics contribute to the conversion of solar energy into electricity?

    <p>By directly converting light into electricity (C)</p> Signup and view all the answers

    What key advantage of solar power is highlighted in the text?

    <p>Its potential to power the entire Earth for a year (D)</p> Signup and view all the answers

    Which element, commonly found in sand, is crucial for generating solar power?

    <p>Silicon (A)</p> Signup and view all the answers

    What distinguishes renewable energy sources like solar radiation from traditional fossil fuels?

    <p>Their impact on climate change mitigation (D)</p> Signup and view all the answers

    How does silicon-based photovoltaics contribute to reducing environmental impact compared to burning coal?

    <p>By significantly reducing greenhouse gas emissions (D)</p> Signup and view all the answers

    What does the conversion of the Sun's energy into electricity through photovoltaics demonstrate?

    <p>The immense untapped potential of solar power (D)</p> Signup and view all the answers

    What is one of the main challenges facing wind power innovation mentioned in the text?

    <p>Noise and visual impact opposition (B)</p> Signup and view all the answers

    Which renewable energy source is expected to constitute a significant portion of new electricity generation in South Africa over the next two decades?

    <p>Wind power (B)</p> Signup and view all the answers

    What is an environmental advantage of solar power highlighted in the text?

    <p>Reduction of greenhouse gas emissions (B)</p> Signup and view all the answers

    Which innovation emulates the photosynthesis process to transform sunlight into a chemical fuel?

    <p>Artificial Photosynthesis (C)</p> Signup and view all the answers

    What is one of the concerns related to the implementation of wind power according to the text?

    <p>Potential harm to marine life (D)</p> Signup and view all the answers

    Which energy source continues to be the primary for electricity generation in South Africa despite advancements in other sources?

    <p>Coal (B)</p> Signup and view all the answers

    What technology aims to integrate solar energy generation into building designs through innovations like solar panel roof shingles?

    <p>'Solar Buildings' (A)</p> Signup and view all the answers

    What is a drawback associated with the use of biofuels mentioned in the text?

    <p>Affordability for impoverished communities (C)</p> Signup and view all the answers

    Which renewable energy source is highlighted as having no air or water pollution during operation?

    <p>'High Altitude Wind Power' (D)</p> Signup and view all the answers

    What is a concern associated with solar power according to the text?

    <p>Greenhouse gas emissions during production (C)</p> Signup and view all the answers

    What is one drawback associated with wind power innovation mentioned in the text?

    <p>Potential harm to wildlife due to turbine blades (B)</p> Signup and view all the answers

    What is a concern related to artificial photosynthesis as discussed in the text?

    <p>Challenges in converting sunlight into chemical fuel (D)</p> Signup and view all the answers

    Which renewable energy source mentioned is highlighted for its potential impact on commodity prices and affordability?

    <p>Biofuels (A)</p> Signup and view all the answers

    What distinguishes underwater kites as an innovative energy generation method according to the text?

    <p>Anchoring to the seafloor and navigating tidal currents (A)</p> Signup and view all the answers

    What is one potential challenge related to solar buildings mentioned in the text?

    <p>Environmental concerns during the production and disposal processes (D)</p> Signup and view all the answers

    Which innovation aims to capture wind streams in the Earth's troposphere for energy generation?

    <p>High Altitude Wind Power (B)</p> Signup and view all the answers

    What distinguishes biofuels in terms of debate surrounding their usage according to the text?

    <p>'Impact on commodity prices and affordability' (B)</p> Signup and view all the answers

    What is a challenge faced by solar power innovation highlighted in the text?

    <p>'Concerns related to production, installation, and disposal processes' (C)</p> Signup and view all the answers

    What is the main mechanism for converting solar power into electricity?

    <p>Photovoltaics (A)</p> Signup and view all the answers

    Which element, commonly found in sand, is crucial for generating solar power?

    <p>Silicon (A)</p> Signup and view all the answers

    Which innovation emulates the photosynthesis process to transform sunlight into a chemical fuel?

    <p>Biomass conversion (D)</p> Signup and view all the answers

    What can generate as much solar power as burning 500,000 tons of coal?

    <p>One ton of silicon (A)</p> Signup and view all the answers

    What renewable energy source is highlighted as having no air or water pollution during operation?

    <p>Solar power (B)</p> Signup and view all the answers

    What is a drawback associated with the use of biofuels mentioned in the text?

    <p>Emission of greenhouse gases (A)</p> Signup and view all the answers

    What is one of the main challenges facing wind power innovation mentioned in the text?

    <p>Intermittency (D)</p> Signup and view all the answers

    What is one environmental concern related to solar power according to the text?

    <p>'Land use impact' (A)</p> Signup and view all the answers

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