How can water be a renewable resource used for energy and by what means?





Question: How can water be a renewable resource used for energy and by what means?

Answer: Currently the vast majority of renewable energy is produced by water or hydro power. This is through the use of hydroelectric dams. Sunlight causes water to evaporate and when it condenses it falls as rain. Once this water reaches the ground again it flows down due to gravity and creates streams and rivers as it flows to reach the lowest point. Hydroelectric dams work by blocking the flow of water, usually rivers, to create a large resevoir of water, usually a lake. This water is allowed to flow through the dam passing through and spinning turbines before it rejoins the river. Turbines generate electricity through induction by moving magnets through coils of wire which generates an electrical current. Other ways water can be a renewable resource is through the use of waves, tides, and the creation of hydrogen from water using electricity sourced from renewables like photovoltaics.

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