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Hydropower Facts

Enjoy our range of interesting hydropower facts.

Learn about hydroelectricity production, different types of hydropower, the largest hydroelectric power station in the world, the use of tidal power and much more.

Hydropower uses the energy of moving water for a variety of useful applications.

Hydroelectricity generates electricity by harnessing the gravitational force of falling water.

In 2006, hydroelectricity supplied around 20% of the world's electricity.

Most hydroelectric power stations use water held in dams to drive turbines and generators which turn mechanical energy into electrical energy.

The largest hydroelectric power station in the world is the Three Gorges Dam in China.

A small number of countries, including Norway, Canada, Brazil, New Zealand, Paraguay, Venezuela and Switzerland, produce the majority of their electricity through hydropower.

Hydroelectricity is a renewable energy but the building of the large facilities needed to make it can have negative effects on the environment.

Hydropower has been used to power watermills for thousands of years although cheap electricity has largely made them obsolete in modern times.

The most common type of watermill grinds grains into flour.

Tidal power is another form of hydropower, it uses the energy of tides to create electricity.

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Hydropower Facts - Creating Electricity with Water & Gravity

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Hydropower Facts Enjoy our range of interesting hydropower facts. Learn about hydroelectricity production, different types of hydropower, the largest hydroelectric power station in the world, the use of tidal power and much more. Hydropower uses the energy of moving water for a variety of useful applications.

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Solar Power Facts

Check out our interesting solar power facts for kids.How do we use solar energy from the sun? What are solar panels? Where is the world's largest solar power plant?

Find out the answers to these questions and more with our range of solar power facts and general information.

Solar energy is obtained from sunlight.

Solar energy has been used by humans for a long time for uses such as heating, cooking food, removing salt from seawater and drying clothes.

These days it is also used to create electricity. As technology has improved, solar power costs have decreased and it has become a more viable alternative, competing with energy sources such as coal and oil.

While solar power is becoming more efficient, it only provides a small fraction of the world's energy supply.

Solar cells convert light energy into electricity.

Solar cells are also called photovoltaic cells.

Solar cells can be used to power portable devices such as calculators.

Large numbers of solar cells are put together to create solar panels.

The largest solar power plant in the world is found in the Mojave Desert, USA.

Spacecraft and space stations such as the International Space Station (ISS) often use solar panels to generate power.

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Solar Power Facts for Kids - Energy from the Sun

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Solar Power Facts Check out our interesting solar power facts for kids.How do we use solar energy from the sun? What are solar panels? Where is the world's largest solar power plant? Find out the answers to these questions and more with our range of solar power facts and general information.

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Wind Energy Facts

Enjoy a range of interesting wind energy facts which help explain how we use wind power to create electricity and other useful forms of energy.

Learn how long humans have been using windmills, how big wind turbines can be, how much of the world's electricity is generated from wind power and much more.

Wind power involves turning energy from the wind into other forms of useful energy.

Wind power can be harnessed in a number of different ways. For example, windmills create mechanical energy, sails move boats and wind turbines generate electricity.

Windmills have been around for a long time, they were used in Persia (Iran) as far back as 200 B.C.

Wind energy is clean and renewable.

Large groups of wind turbines are called wind farms.

Around 80 different countries use wind power to generate electricity commercially (as of 2009).

In 1997 wind power generated only 0.1% of the world's electricity, this increased to 1.5% in 2008 and 2.5% in 2010.

In some countries such as Denmark and Portugal, wind power contributes around 20% of the total electricity production.

The large blades of wind turbines can interfere with some radar systems used by weather stations or air traffic controls, at times being mistaken for planes or various weather patterns.

Smaller turbines are sometimes used to charge batteries or as backup power in caravans and sailing ships.

Modern wind turbines usually have 3 blades which can reach speeds at the tip of over 320 kph (200 mph).

The tips of large wind turbines can reach heights up to 200 m (650ft).

Wind turbines can even be installed offshore on floating structures, sending the electricity generated back to land with the help of undersea cables.

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Wind Energy Facts - Using Wind Power to Create Electricity

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Wind Energy Facts Enjoy a range of interesting wind energy facts which help explain how we use wind power to create electricity and other useful forms of energy. Learn how long humans have been using windmills, how big wind turbines can be, how much of the world's electricity is generated from wind power and much more.

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Kids learn about hydropower energy and how this renewable power can help the environment. Teach students about biodiesel, ethanol, and methane gas.

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Kids learn about solar energy and how this renewable power can help the environment. Teach students about solar cells and using the sun for heat.

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Kids learn about wind energy and how this renewable power can help the environment. Teach students about turbines that generate electricity from wind.