energy and sources
Energy is the ability to cause change.Energy is always involved when changes in matter occur. Kinds of energy:Solar,Electric,Kinetic,Potential,Mechanical,chemical,gravitational, sound,and more... The sun is our main energy source.Without the sun we would not be here.The sun gives the plants energy,so that they can go through photosynthesis.And without trees we would not get oxygen and would not be able to breathe.
These windmills/wind turbines spin clockwise and get energy from the wind. This is called mechanical energy.