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WIND ENERGY

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  • Why is wind energy considered clean energy?
    Wind energy is clean because wind turbines do not burn fuel and do not pollute the air.
  • What happens when warm air rises?
    Cooler, denser air moves in to take its place, creating wind.
  • How do wind turbines make electricity?
    Wind pushes the blades, making them spin. The spinning blades turn a generator to produce electricity.
  • Why is wind energy free?
    Wind energy is free because no one owns the sun or the air.
  • Do wind turbines run all the time? Why or why not?
    No, they do not run all the time because sometimes there is no wind or the wind blows too hard.
  • How tall can wind turbines be?
    Some wind turbines are as tall as 20-story buildings.
  • How often do most wind turbines operate?
    Most wind turbines run between 65 and 90 percent of the time.
  • How do light-colored surfaces affect sunlight?
    Light-colored surfaces reflect more sunlight back into the air.
  • Where are good places to build wind turbines?
    Good places include areas near water, flat land, mountain passes, and offshore in the ocean.
  • What is a wind farm?
    A wind farm is a place where many wind turbines are grouped together to make electricity.
  • Where does wind energy come from?
    Wind energy comes from the sun. The sun heats the Earth unevenly, causing air to move.
  • Why do dark forests get warmer than deserts?
    Dark forests absorb more sunlight, while light desert sands reflect more sunlight.
  • Why is wind considered a safe and good energy source for the future?
    Wind is safe, clean, renewable, and will not run out as long as the sun shines.
  • What is wind?
    Wind is moving air.
  • Why does warm air rise?
    Warm air expands, becomes less dense, and rises into the atmosphere.
  • Why does the Earth near the Equator get warmer than the poles?
    The Equator receives more of the sun’s energy than the North and South Poles.
  • Why is wind energy considered renewable?
    Wind energy is renewable because as long as the sun shines, wind will continue to form.
  • What were some early uses of wind energy?
    Early Egyptians used wind to sail ships on the Nile River. People also used windmills to grind wheat, pump water, and run sawmills.
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