Hydropower and Energy Generation
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Questions and Answers

What is the reason behind water producing massive amounts of kinetic energy?

  • The force of gravity pulling it down (correct)
  • The viscosity of water
  • The pressure of air on water
  • The force of gravity pulling it upwards
  • What was historically used to power mills that milled wheat into flour?

  • Solar power
  • Wind power
  • Geothermal energy
  • Hydropower (correct)
  • What is the term used to describe the production of electricity using hydropower?

  • Hydroelectric energy
  • Hydroelectric power (correct)
  • Hydropower generation
  • Electric hydropower
  • What is the process by which kinetic energy is transformed into mechanical energy?

    <p>Harnessed through human intervention</p> Signup and view all the answers

    What was the invention that led to a century of advancement in the production of electricity using hydropower?

    <p>Turbine</p> Signup and view all the answers

    What percentage of the total clean energy produced in the U.S. comes from hydroelectric power?

    <p>37%</p> Signup and view all the answers

    What is the primary purpose of building a dam in a hydroelectric power plant?

    <p>To control the flow of water and create a reservoir</p> Signup and view all the answers

    What is the main advantage of hydroelectric power over fossil fuels?

    <p>It is a cleaner energy source</p> Signup and view all the answers

    What is the term for the pattern of water being evaporated, condensed, and falling back to Earth?

    <p>The water cycle</p> Signup and view all the answers

    What is the primary mechanism by which hydropower generates electricity?

    <p>The flow of water turns a turbine, which powers a generator</p> Signup and view all the answers

    What is an advantage of using hydroelectric power in the United States?

    <p>It provides a local power source in each state</p> Signup and view all the answers

    What is a disadvantage of damming waterways for hydroelectric power?

    <p>It disrupts ecosystems by changing the water temperature</p> Signup and view all the answers

    What is a practice that contributes to greenhouse gas emissions during the creation of a reservoir?

    <p>Digging out the reservoir</p> Signup and view all the answers

    What is the purpose of fish ladders in hydroelectric power plants?

    <p>To help migratory fish navigate around dams</p> Signup and view all the answers

    Why is hydroelectric power considered cost-effective?

    <p>Because construction requirements are low and structures are durable</p> Signup and view all the answers

    Study Notes

    What is Hydropower?

    • Hydropower is the natural force created by water as it moves from areas of high elevation to areas of low elevation.
    • Water produces massive amounts of kinetic energy due to the force of gravity pulling it down.

    Historical Use of Hydropower

    • Hydropower has been used historically to power mills, papermaking, and break and process ore.
    • In the late 1700s and 1800s, the invention and use of the turbine led to the production of electricity using hydropower.

    Hydroelectric Power

    • Hydroelectric power is the use of hydropower to produce electricity.
    • The U.S. uses hydroelectric power to produce 7.3% of its total generated electricity and 37% of its total clean energy produced.

    Electricity Generation

    • To produce electricity using water, a flow of water and a turbine connected to an electrical generator are required.
    • The water cycle provides the flow of water, which comes from rivers and streams.
    • Hydropower plants are built on the waterfront, and some have dams that create artificial bodies of stored water (reservoirs).

    Hydropower Plant Process

    • Water flows through holes in the dam (penstock) and turns a turbine, which powers a generator.
    • The turbine turns a shaft connected to magnetic steel filaments that spin inside a coil of conductive material (usually copper wire), producing electricity.

    Hydropower Pros and Cons

    Benefits of Hydropower

    • Hydropower is a renewable resource because water is constantly recycled in the water cycle.
    • It is a clean energy resource, producing no fossil fuels that pollute the atmosphere.
    • Hydropower is flexible, cost-effective, and provides a local power source.

    Disadvantages of Hydropower

    • Damming waterways can have negative impacts on local ecosystems, disrupting natural water temperatures and affecting organisms.
    • Creating reservoirs can contribute to greenhouse gas emissions and disrupt the natural flow of rivers.
    • Damming can affect migratory fish and other organisms that rely on the natural shape and location of the water flow.

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    Description

    Learn about the power of water and its various applications in generating energy. From creeks to waterfalls, discover how water has been harnessed as a source of power throughout history.

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