Which source of energy is used in a windmill?
Water
Fire
Wind
Geothermal
In a windmill, wind energy is converted into mechanical energy and then to electrical energy.
Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?
(a) Geothermal energy
(b) Wind energy
(c) Nuclear energy
(d) Bio-mass
Which non-conventional source of energy uses the energy mass equation ( E = ∆m c2 ) to generate electricity?