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Sources of Energy

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  • What are the alternative energy sources?
    Hydroelectric, geothemal, wind, nuclear energy
  • What is solar energy ?
    Solar energy is Solar energy is the energy from the sun that is converted into electricity or heat
  • What are the two main forms of energy that we can get from the sun ?
    heat energy and light energy
  • State the energy conversion in windmills !
    Kinetic energy (wind) - kinetic energy (blades) - kinetic energy (gears)
  • State the energy conversion in wind turbines
    kinetic energy (wind) - kinetic energy (blades) - electrical energy (generator)
  • Name one use of sound !
    we use sound for talking
  • Why is electrical energy one of the most useful forms of energy ?
    Because it can be converted to other forms of energy such as light, heat, and sound.
  • why are fossil fuels called limited sources of energy?
    because the will not last forever and will run out
  • What are the example of fossil fuels ?
    Coal, oil, and natural gas
  • what can we do to conserve energy?
    walk or ride a bicycle, switch off electrical appliances when they are not in use (OPEN ANSWER))
  • What is the main source of energy ?
    Sun
  • what is hydroelectric energy?
    Hydroelectric energy is a form of energy that generates electricity using the power of running water
  • names other sources of energy that are renewable!
    sun,running water, and wind
  • names limited sources of energy!
    coal, oil and natural gas
  • Where do solar cels get light energy from ?
    From the Sun
  • What energy does the running water has?
    Gravitational potentia energy - kinetic energy
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