66 The ……. makes the windmill rotate.
The wind makes the windmill rotate.
Therefore, The wind makes the windmill rotate.
If we make a windmill on the moon will its blade ever move.Why?
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.
Windmills rotate with the help of:
The minimum speed of wind necessary for a small windmill to rotate and produce electricity is