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    Learn English > English lessons & exercises > Renewable energies > Stats updated every 4 hours
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    Exercise "Renewable energies", created by baboune16 (a free exercise to learn English):
    Results of the 224 people who have taken this test:
    Average mark: 68.5 / 100 Share

    Latest member with a 100/100 (perfect mark): chocolatcitron / FRANCE, on Saturday 16 November - 22:03:
    "l'hydro et la marémotrice, ce sont des poissons et mamifères pris au piège eux aussi."

    They got a perfect mark

    Stats (224 candidates)
    Question 1 passed: 83 %
    * is the use of air flow through wind turbines to provide mechanical power to turn electric generators.

    Question 2 passed: 49.6 %
    The electricity producers using * connect their installations to the network in order to sell what they produce.

    Question 3 passed: 77.2 %
    In addition to construction for the purpose of producing hydroelectric power,* are created to control river flow.

    Question 4 passed: 69.2 %
    Electricity generated by domestic *is mostly used for powering household appliances and equipement.

    Question 5 passed: 59.4 %
    In 1966, France opened the Rance *. It was the first one in the world.

    Question 6 passed: 69.6 %
    The * principle is being used to make inexpensive solar cookers and for solar water pasteurisation.

    Question 7 passed: 74.6 %
    Underground reservoirs of steam and hot water can be tapped to generate eletricity or to heat buildings with this *.

    Question 8 passed: 64.3 %
    A* is based on the conversion of sunlight into electricity using PV or CSP (concentrated solar power).

    Question 9 passed: 72.8 %
    Ocean waves contain very tremendous energy. * devices extract energy from the surface motion of waves.

    Question 10 passed: 59.8 %
    On combustion, the carbon from * is released into the atmosphere as carbon dioxide.

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