Energy from Ocean: Tidal Power Quiz

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Questions and Answers

What type of energy is harnessed by tidal power plants?

  • Wind energy
  • Hydro energy (correct)
  • Solar energy
  • Geothermal energy

What is the primary focus of a single basin tidal power plant?

  • Harnessing the chemical energy of the ocean
  • Harnessing the energy generated by the rise and fall of ocean tides
  • Harnessing the kinetic energy of moving water currents (correct)
  • Harnessing the thermal energy of the ocean

What is the principle of operation of tidal stream generators?

  • Using tidal currents to rotate turbines (correct)
  • Using tidal currents to generate hydrogen
  • Using tidal currents to pump water
  • Using tidal currents to heat water

What is the advantage of tidal power generation compared to other forms of energy?

<p>Less environmental impact (D)</p> Signup and view all the answers

How do tidal kite systems generate electricity?

<p>By using tidal currents to move a kite in a figure-eight pattern (C)</p> Signup and view all the answers

What is the pattern of motion of the tidal kite in a tidal kite system?

<p>Figure-eight pattern (D)</p> Signup and view all the answers

Where are tidal stream generators typically placed?

<p>On the seabed in areas with strong tidal currents (C)</p> Signup and view all the answers

What is the purpose of the turbines in a tidal power plant?

<p>To rotate and drive generators to produce electricity (C)</p> Signup and view all the answers

What is the characteristic of tidal currents that makes them useful for tidal power generation?

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

What type of energy is captured by tidal stream generators?

<p>Kinetic energy (C)</p> Signup and view all the answers

What is a major advantage of two-basin tidal power plants?

<p>High potential for energy generation due to the large tidal range (C)</p> Signup and view all the answers

What is the primary purpose of a tidal barrage in a tidal range power plant?

<p>To control the flow of water between the sea and the estuary (A)</p> Signup and view all the answers

During which stage of the tidal cycle is the potential energy stored in the upper basin?

<p>During high tide (A)</p> Signup and view all the answers

What determines the potential energy available for electricity generation in a tidal range power plant?

<p>The tidal range (C)</p> Signup and view all the answers

What is the main advantage of a two-basin tidal power plant over a tidal range power plant?

<p>It offers more flexibility in controlling water flow between basins (C)</p> Signup and view all the answers

What is the purpose of the sluice gates in a tidal range power plant?

<p>To control the flow of water between the sea and the estuary (D)</p> Signup and view all the answers

What happens during the low tide stage of the tidal cycle in a tidal range power plant?

<p>The water flows from the upper basin to the lower basin (A)</p> Signup and view all the answers

How often does the tidal cycle typically occur?

<p>Twice a day (C)</p> Signup and view all the answers

What is the main advantage of tidal power plants in terms of energy generation?

<p>They have a predictable energy output (A)</p> Signup and view all the answers

What is the purpose of the turbines in a tidal range power plant?

<p>To generate electricity (A)</p> Signup and view all the answers

What is the main factor that affects the amount of water that can be stored and released in tidal power plants?

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

What is the primary advantage of tidal power plants?

<p>Predictable and reliable electricity (A)</p> Signup and view all the answers

What is the principle of operation of OTEC systems?

<p>Utilizing the temperature difference between the ocean's surface and deeper layers (A)</p> Signup and view all the answers

What is the primary function of the heat exchanger in an OTEC system?

<p>To vaporize the working fluid (A)</p> Signup and view all the answers

What is the main difference between closed-cycle and open-cycle OTEC systems?

<p>The type of working fluid used (B)</p> Signup and view all the answers

What is the primary advantage of OTEC systems over other forms of energy generation?

<p>Low environmental impact (D)</p> Signup and view all the answers

What is the main challenge in the commercial deployment of OTEC systems?

<p>All of the above (D)</p> Signup and view all the answers

What is the purpose of the cold seawater in an OTEC system?

<p>To condense the vaporized fluid (A)</p> Signup and view all the answers

What is the primary benefit of OTEC systems in terms of power generation?

<p>Continuous power generation (A)</p> Signup and view all the answers

What is the main advantage of hybrid OTEC systems?

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

Which phase involves warm surface seawater vaporizing a low-boiling-point fluid in the Open Cycle OTEC system?

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

In the Closed Cycle OTEC system, which component is responsible for condensing the working fluid back into a liquid?

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

What is a key difference between the Open and Closed Cycle OTEC systems?

<p>The use of a separate working fluid (B)</p> Signup and view all the answers

What is the purpose of the Turbine in both Open and Closed Cycle OTEC systems?

<p>To drive a generator and produce electricity (D)</p> Signup and view all the answers

Which OTEC system has a design that is simpler but is limited by the availability of warm seawater?

<p>Open Cycle OTEC (B)</p> Signup and view all the answers

In the Closed Cycle OTEC system, what is the role of the warm seawater?

<p>To drive a turbine (A)</p> Signup and view all the answers

What happens to the working fluid in the Open Cycle OTEC system after it drives the turbine?

<p>It is discharged back into the ocean (D)</p> Signup and view all the answers

Which component helps in maintaining a continuous closed loop in the Closed Cycle OTEC system?

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

Where does the cold seawater from the deep layers flow in the Open Cycle OTEC system?

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

What is the primary function of the low-boiling-point fluid in OTEC systems?

<p>To absorb heat and vaporize (A)</p> Signup and view all the answers

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