Alternative Energy Tidal Energy Tidal Energy Tides are
- Slides: 18
Alternative Energy
Tidal Energy
Tidal Energy Tides are when the gravity from the moon and sun pull the water up or down. People harness this power by putting big turbines, like wind turbines, in large bodies of water. The current and tides move the turbines to create power. The turbines turn mechanical energy into electrical energy. Tidal Power plants are called Barrages.
Wait, what are Tides? Gravity from the moon and sun make the water get higher. As the earth spins, high tides and low tides change in different places.
Where is Tidal Energy used? The biggest tidal barrage is in South Korea. The first one was built in La Rance, France in 1960 to 1966. In the future some good places could be Russia, Canada, China, France and England.
Pros and Cons Pros: ● ● ● ● Renewable Natural Emission free Predictable input and output Reliable Pays for itself Low operation costs Cons: ● Expensive to build ● Can impact local terrestrial and marine wildlife ● Location specific ● Captures sediment and pollution near coast
So is it Viable? Tidal energy can be viable. It wouldn’t be able to power the world as our main source of energy, though. There are only a few locations where we could actually set up large barrages.
Long Term Outcome Tidal power is an upcoming new source of energy for us. Since we can predict the tides, we know the best places to build barrages for optimum electrical energy.
Watch This for More of an Explanation!
Hydroelectric Power
Hydroelectricity Hydro power harnesses motion in water and turns it into electrical energy. We use large dams that have turbines in them and pump the water through, spinning the turbines.
Look at this gif for a while.
Where do we use Hydroelectricity? The largest power plant currently is in China, the second biggest is in Brazil. A hydroelectric dam in Ontario powers ⅓ of the province. wow
Pros and Cons Pros: ● Renewable ● Natural ● Reliable (We have lots of water that moves obviously) ● Safe for our Earth (No pollution or emissions) Cons: ● Intervenes with flow of water and wildlife ● Expensive to build ● Limited reservoirs (Not a lot of places to build them) ● Can be affected by droughts
Well, is it Viable? People around the world have been using this kind of power since before the 1930 s. It provides electricity for millions of people around the world everyday. Yes, hydroelectric power is viable.
Long Term Outcome Many people and places around the world already rely on and use this kind of power. More and more power plants are being built to provide us with a cleaner source of electricity!
Watch This for More of an Explanation!
Bye guys, have a good break! So festive
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