Renewable energy resources can be replaced as we use them.   Energy from renewable resources can be used to drive turbines directly which then drive      generators which produce electricity.        Examples of renewable energy resources and how they generate electricity are:   The wind   The wind turns the blades which turn a turbine that is connected to a   generator that generates electricity.   The waves              The water inside the tube rises and falls forcing the air in and out of the hole at the top of the       tube. The air turns the turbine that is connected to a generator that generates electricity.        Hydroelectric schemes       Water is held in a reservoir in a dam. As the water flows down, it turns the turbine that is           connected to a generator that generates electricity.                                                                The tides       As the tide comes in, water flows through a turbine that is connected to a generator that       generates electricity.       As the tide falls, water flows through the turbine in the opposite direction. The generator       generates electricity.       Geothermal        In some volcanic areas, hot water and steam from deep underground rise to the surface. The       steam can be tapped and used to drive turbines. The turbines are connected to generators       that generate electricity.        Solar cells        Electricity can be produced directly from the Sun's radiation using solar cells.