Question

A list of words is given in a box. Use appropriate words to fill up the blanks in the following statements.

[Air, oxygen, wind, water vapour, mixture, combination, direction, road, bottles, cylinders]

(a) The ______ makes the windmill rotate.

Answer 1

Windmill:

1. A windmill is a mechanism that turns the wind's kinetic energy into mechanical energy.
2. Windmill blades always spin in a clockwise manner.

How Windmills work:

1. The number of windmill blades was established through a series of trial and error procedures.
2. It was discovered that three blades performed best, thus every windmill has three blades.
3. The wind is the windmill's energy source.
4. When the blades come into touch with the wind, they cause the shaft to spin, resulting in the generation of energy.
5. Mechanical energy is converted into electrical energy by the generator.

Thus, the wind makes the Windmill rotate.