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.
Other questions related to hydroelectric energy:
- How does gravity hydropower work?
- How does a dam work?
- Will hydroelectric power save money?
- What kind of power output does hydroelectric power produce?
- What is the wasted energy for hydroelectric energy?
- What is an example of hydroelectric energy?
- What does a wicket gate do in a hydro dam?
- How does a dam hold water?
- What do wicket gates do in hydroelectric dams?
- How can water be a renewable resource used for energy and by what means?
- How efficient are hydroelectric dams?