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Wind energy
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Wind energy


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  • 1. Wind Energy
  • 2. What is it?
    • Wind Energy is kinetic energy from the wind that can be directly converted to electrical or mechanical energy by reacting to the atmospheres pressure slope.
    • The wind mill was invented in 200 BC in China and was used to pump water and grind grain
    • In modern day the wind energy has doubled through the years
  • 3. How it works?
    • Wind is caused by differences in the air’s temperature
    • In the day time the wind blows over the land and at night the wind reverses and blows over the water
    • Wind is used to generate energy
  • 4. Wind turbines
    • Wind turbines collects kinetic energy from the wind from blades similar to planes
    • The wind glides over the blades and creates lift and turns the blades
    • The blades are connected to a rotating shaft that is connected to an electric generator that makes electricity
  • 5. Types of wind turbines
    • Horizontal-axis Turbines- typically 20 stories tall and have 3 blades that are 200 feet long
    • Vertical-axis Turbines- Blades that span from the top to the bottom and resembles an egg beater. It typically stands 100 feet tall and 50 feet wide
    • Vertical-axis turbines are less common than the horizontal-axis turbine
  • 6. Wind turbines locations
    • Wind turbines are located where there is wind created such as tops of smooth rounded hill , open plains and shore lines also mountain gaps that produce wind
    • 20% of the world power is produced from wind
    • The US uses wind power the most
    • Wind turbines are pooled into areas called wind farms that are gridded areas to put wind energy
  • 7. Pros of wind turbines
    • Clean source of energy
    • Fewer environmental impacts than other sources of power
    • Don’t pollute water or air
    • Reduce the use for fossil fuels
    • Give extra incomes to farmers and businesses that help them stay in business
  • 8. Cons of wind turbines
    • Unappealing to the eye
    • Noisy
    • Can catch on fire and leak though it is rare
    • Birds and bats get hit and die
  • 9. Citations