Tidal Power

Tidal Power is the energy of the moving water of the tides, which can be harnessed to generate electricity. This is a green, renewable energy of the future.

1,416 Questions
Biology
Energy
Tidal Power

Trace electrical energy back to the sun?

50% of the electricity in the united states is produced by burning coal. Let's go backwards from the elctrical energy which enters your house and can be converted into various types of energy for use in your house. The electricity was produced by spinning a magnet inside a coil of wire or spinning a coil of wire inside a round magnet. This takes mechanical energy. The mechanical energy is provided by steam which turns a turbine which is connected to the magnet or coil to make it spin. The steam is produced by water being super heated. That's thermal energy. That thermal energy is produced by burning the coal. Coal is a rock that was formed by compressed plants that died millions of years ago. Energy from those plants was stored in the coal. And plants get their energy directly from the sun. Chlorophyll in the plans allow them to use light from the sun to produce sugar from carbon dioxide and water in a process called photosynthesis. The light energy from the sun is radiant energy. But that's not the beginning. That light from the sun was released at the sun's surface, after the energy traveled for millions of years from the core of the sun. The core of the sun is a very hot, high pressure place. Particles are moving so fast and under so much pressure that they get crushed together to for new elements. When two nuclei of atoms combine or fuse, it is called fushion. And this fushion is an example of nuclear energy. I guess we could trace it back further, but you wanted to know about the sun. And we would have to go back billions of years more to find that source of energy. But here are the lessons. Energy is never created or destroyed, only changed. So all the energy we have now, had to come from some where, and will just be converted into other forms as we use it. Most often, it is converted into heat. Also, every time one form of energy is converted into another some of it is lost as heat (sometimes most of it). For example, of the energy from the food you eat, 95% of it gets converted to heat to keep you warm. Only the other 5% is useful for things like moving, thinking, breathing, and typing this answer. In most cases, heat energy is not useful, so it's wasted. Now think about all the changes that had to happen to convert the energy in the core of the sun to electricity to run your computer. Look at how inefficient coal powered electricity is, and how much more efficient solar electrcity would. In that case, we can convert the light from the sun directly into electricity. One step! Hope that helps.

345
Science
Environmental Issues
Tidal Power

Does tidal power kill fish?

Depends. It certainly can do; an example of a tidal power project potentially destructive to the marine environment is the proposed Severn Barrage, which basically dams the Severn estuary between England and Wales. There are also completely non-invasive ways of producing tidal power, such as the the 'snakes' which float on the water off the coast of Portugal (see link). As yet these more advanced methods are less effective though.

345
Inventions
Isuzu Impulse
Mechanical Engineering
Tidal Power

How does a turbine work?

Literally saying, a turbine is a machine that transforms rotational energy from a fluid that is picked up by a rotor system into usable work or energy. Turbines achieve this either through mechanical gearing or electromagnetic induction to produce electricity.

Types of Turbines.

Some major types of turbines include steam turbines, wind turbines, gas turbines or water turbines, Or a rotary engine actuated by the reaction or impulse or both of a current of fluid (such as water, steam, or air) subject to pressure and usually made with a series of curved vanes on a central rotating spindle.

Working.

It works by turning wind or steam into electricity using the aerodynamic or corresponding force from the rotor blades, which work like an airplane wing or helicopter rotor blade. When wind flows across the blade, the air pressure on one side of the blade decreases.

The difference in air pressure across the two sides of the blade creates both lift and drag. The force of the lift is stronger than the drag and this causes the rotor to spin. The rotor connects to the generator, either directly or indirectly.

91011
Earth Sciences
Oceans and Seas
Tidal Power

What do you call the rise and fall of the sea?

The rise and fall of the sea is known as the tide. The tides are caused by the moon's gravitational pull on earth. So, when the moon is facing a certain side of the earth, it literally pulls the water towards it.

The daily cycle of the rising and falling of the sea level is called the tide. The tide rises and falls about 4 times in 24 hours and the period in between cycles when the tide is neither rising or falling is called the slack tide.

The moon's gravitational pull affects tides. the tide will be high when the moon is visible because of its pull.

272829
Solar Power
Tidal Power
Furnaces

The advantages and disavantages of solar furnace?

Advantages

  • Solar energy is free - it needs no fuel and produces no waste or pollution.
  • In sunny countries, solar power can be used where there is no easy way to get electricity to a remote place.
  • Handy for low-power uses such as solar powered garden lights and battery chargers.

Disadvantages

  • Doesn't work at night.
  • Very expensive to build solar power stations. Solar cells still cost a great deal compared to the amount of electricity they'll produce in their lifetime.
  • Can be unreliable unless you're in a very sunny climate. In the US, solar power isn't much use except for low-power applications, as you need a very large area of solar panels to get a decent amount of power. However, for these applications it's definitely worthwhile.
91011
Physics
Philippines
Tidal Power

Where is the Tidal power plant in the Philippines?

The tidal power plant in the Philippines is located at Brittany on the River. This power plant harnesses power to give to all of the small islands.

123
Tidal Power

What causes a tidal budge?

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Tidal Power

What locations throughout the world would a tidal power generating facility be common?

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Tidal Power

What are the Environmental issues with tidal energy?

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Renewable Energy
Hydro Power
Tidal Power

Why is tidal energy a limited source?

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Tidal Power

What are examples of tidal power?

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Tidal Power

Can tidal energy be used on any coast?

It would be very difficult to harness much energy from an ordinary coast. The best place for tidal power plants is where the tidal water flows in a fast and powerful manner.

  • A river mouth that narrows when it meets the sea is a good place.
  • A large bay with a small opening to the sea is good.

When the tide comes in, a lot of water is forced into the collection area. Then, when the tide goes out, it runs out very powerfully, and can drive turbines to generate electricity.

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Tidal Power

What is tidal action?

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Renewable Energy
Solar Power
Tidal Power

What are the condition for a substance to be called a resource?

A resource is something that we can use over and over again. For instance, sunlight (solar energy), wind energy, and the tides (tidal energy) are such resources. If we cut down mature soft wood or hard wood trees, and then replant new trees for the (long term) future, that is a
renewable resource.
A non-renewable resource is coal, natural gas and crude oil. Once used there is no natural replacement.

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Tidal Power

Periodic rise and fall of the water level in the ocean?

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Tidal Power

A crucial characteristic of turbines in tidal generators is that .?

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Tidal Power

How the energy used by many living things on Earth can be traced back to sunlight?

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Tidal Power

A dam constructed to produce tidal power does so by what?

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Tidal Power

What Tidal power is harnessed by?

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Tidal Power

A dam constructed to produce tidal power does so by .?

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Tidal Power

Why is electrical to heat occurs in the wire coils?

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Tidal Power

Why is tidal power important?

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Tidal Power

When is tidal power easy accessible?

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Tidal Power

How does tidal power effect transportation?

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Tidal Power

What is tidal power is harnessed by?

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