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Dec 15, 2020 · Wind Turbines. Wind power is usually generated using a wind turbine. Wind turbines are mechanical systems that convert kinetic energy into electrical energy. Kinetic energy is energy that comes from movement. Wind is the movement of air. There are wind turbines on land and in water. Image - Text Version.
Nov 1, 2021 · Figure 2. Wave-generation mechanisms. (a) Turbulent eddies in the air disturb an initially calm ocean and create ripples with wavelengths on the scale of centimeters. (b) Those ripples grow to meter-scale wavelengths, and the wind becomes “sheltered” on the downstream (leeward) side of the wave crest.
- Solar Energy. Solar energy can be captured “actively” or “passively.” Active solar energy uses special technology to capture the sun’s rays. The two main types of equipment are photovoltaic cells (also called PV cells or solar cells) and mirrors that focus sunlight in a specific spot.
- Wind Energy. People have been harnessing the wind’s energy for a long, long time. Five-thousand years ago, ancient Egyptians made boats powered by the wind.
- Geothermal Energy. Deep beneath the surface is Earth’s core. The center of Earth is extremely hot—thought to be over 6,000 °C (about 10,800 °F). The heat is constantly moving toward the surface.
- Biomass Energy. Biomass is any material that comes from plants or microorganisms that were recently living. Plants create energy from the sun through photosynthesis.
Wind turbines, as they are now called, collect and convert the kinetic energy that wind produces into electricity to help power the grid. Wind energy is actually a byproduct of the sun. The sun’s uneven heating of the atmosphere, the earth’s irregular surfaces (mountains and valleys), and the planet's revolution around the sun all combine ...
Wind is also responsible for our very powerful waves. As wind rushes up along the water, the friction causes ripples. Wind continues to push against these ripples in a snowball effect that eventually creates a large wave. Essentially, this action is a transfer of energy from the sun to the wind to the waves.
- Jane Mcgrath
1. Capturing the Wind. When the wind blows, it strikes the turbine’s blades. The shape of the blades is designed to create lift, similar to an airplane wing, allowing them to harness more energy from the wind. 2. Spinning the Rotor. As the wind pushes the blades, they start to rotate the rotor.
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The UK has about 1000km of Atlantic coastline. The average potential energy of Atlantic waves is 40kW per day for every metre of coastline, which is enough to power around 20 domestic kettles. So, scaling up, 65 P2 machines could generate almost 50MW of power – enough to power up to 33,000 homes a year. Subscribe to BBC Focus magazine for ...
