The wind at work
If you have tried to bike in a tailwind or in a headwind then you know the power of the wind. The wind is pushing you. This is the same power that is exploited in a wind turbine – the wind pushes the turbine blades and makes them spin around.
How can you set a wind turbine so it turns around as effective as possible? Does it make a difference if the turbine is turned against the wind or if it has turned its side to the wind? Does it make a difference how slanting the blades are in relation to the wind? Try to play with it. You can turn the whole wind turbine around or set the blades more or less slanting.
There is a generator inside the wind turbine, which turns around with the turbine blades. The generator produces electric current. When it produces a lot of electric current, the generator must tap off a lot of energy from the wind to do it and when it taps off a lot of energy, it makes a large resistance against the turning power of the blades. The wind really needs to work, to make the turbine blades spin around.
It is up to you to find the right position of the wind turbine, so it produces the most possible electric current and thus the most possible energy!