A windmill is a machine that transforms wind power into rotational motion by means of blades or sails. They are also called windpumps or wind turbines. The term wind engine is also sometimes used to explain such machines. Windmills were used during the medieval and early modern era. The panemone or horizontal windmill first appeared in the current Iran region in the ninth century. The vertical windmill was first seen in Europe during the twelfth century. In fact, there are around a thousand windmills in the Netherlands currently.
Read more: How to Make a Windmill
How to Make a Windmill Questions with Answers
1) What is a windmill?
A windmill is a machine that transforms wind power into rotational motion by means of blades or sails. They are also called windpumps or wind turbines. The term wind engine is also sometimes used to refer to such machines.
2) Give an account of the earliest model of a windmill.
The panemone or horizontal windmill first appeared in the current Iran region in the ninth century. The vertical windmill was first seen in Europe during the twelfth century. It was first made to pump water and subsequently altered to grind grain and other things as well.
3) What is a horizontal windmill?
The earliest usable windmills were panemone windmills, using sails that revolved in a horizontal direction around a vertical pivot. Windmills were composed of six to twelve sails enclosed in cloth material; these windmills were employed to process grains or vertically transport water.
4) What is a vertical windmill?
The vertical windmill is a development of the 12th century, first practically used in Europe, in eastern England, the triangle of northern France, and Flanders. It got its name from the plane of motion of its sails.
5) What are the main uses of electric energy derived from windmills?
It is used for electrifying towns, industries, etc.
6) What are the main types of winds?
Primary wind, secondary wind and tertiary wind are the main types of winds.
7) What are the main parts of a windmill?
Blades, anemometer, tower and rotor are the main components of a windmill.
8) What is the principle behind the working of a windmill?
The necessary number of blades in a windmill was found out after numerous trial and error examinations. It was determined that three blades operate the best, and that’s the reason most windmills have only three blades. The fundamental energy source for windmills is natural wind. When the attached blades come in direct contact with a strong wind, the blades start to move in such a way that the shaft begins to spin, kickstarting the generation of electricity. The electric generator transforms mechanical energy (wind energy) into electrical energy.
9) What are the materials required for making a windmill toy?
The materials required are a piece of heavy construction paper, ruler or compass, pencil, scotch adhesive putty, scotch precision scissors, metal paper fastener or pushpin, and straw or thin stick.
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Practice Questions
1) What is meant by the wind?
2) What are the different types of winds?
3) What is the main difference between a land breeze and a sea breeze?
4) What is meant by a storm?
5) What is the relationship between the windmill and Coriolis force?
6) What are the main advantages and disadvantages of windmills?
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