Skip to main content

How Windmill Blades Spin – Grade 1 Science Project 2009

Vedic with his grade 1 Science Project, How Windmill Blades Spin. 



How Windmill Blades Spin


The purpose of this project is to find out how windmill blades spin.

I like windmill because they are so powerful they can pump water, turn a turbine and cut hay into little seeds with their windmill connection.


My hypothesis is that the blades of the windmill spin due to the angle in the blades.

My hypothesis is based on toy windmills and knowledge I gained while reading books.




Item Description


Windmill stand - to place different type of blades


Different type of blades some with angle and some without angle


Fan - for wind source


Pushpin, tape


1. Build the windmill stand and place it on the ground.

2. Place a fan approximately 1 foot away from windmill stand.

3. Place different type of blades on the windmill stand.

4. Turn the fan on to create the wind & observe whether the blade spins. Do they spin?

5. Repeat the above but change the angle of the blade to higher angle. Keep trying different blades & angle until one of the blade spins.

6. Note the observation into the result table in the note book


The purpose of this experiment was to find out whether the angles in the blades help in spinning the blade.

The results of the experiment were that the blades with angle spin while other blades without angle did not spin.

Blade Type

Does it Move

A full circle


Blades without angle


Blades with angle


Blades with higher angle



My hypothesis is that the blades of the windmill spin due to the angle in the blades. The result indicated that the hypothesis is true as the blades with angle spins while other blades did not spin.

I also observer that the higher the angle faster the spin.



Windmills are machines that have 1) Windmill Blade, 2) Windmill Tower, Shaft & Gears and 3) Connectors such as Turbine, Grindstone, Crasher and Water Pump.

How Windmill works

Windmills work because wind spins the blades of the windmill. When blades spin it turns shaft & gears of the windmill and can pump water, turn a turbine and cut hay into little seeds with their windmill connection.

What is Wind

Wind is air in motion. Wind form by sun by heating air unevenly.

Use of windmill

Windmills are used to pump water, turn a turbine and cut hay into little seeds.

Types of Windmills

There are two classes of windmills, horizontal-axis machines and vertical-axis machines.

Wind farms

Wind farms are made of anywhere from 60 to 1000 windmills in a big area to generate electricity that can be used by a small city.


Windmills have been around for thousands of years. The first windmills were used for irrigation. Windmills are great as they provide electricity, pump water and grindstones. Windmills use natural resource which is wind and do not produce any harmful waste.


The Wind at Work, An Activity Guide to Windmills, Gretchen Woelfle, 1999

Windmills, Laura Brooks, Metro Books, 1999

How Do Windmills Work,

Windmill Wikipedia Guide,


Popular posts from this blog

SharePoint WebPart Error - Unable to add selected web part (s) – MOSS 2007

ISSUE: Recently I faced this issue that when I try to deploy my WebPart.  Unable to add selected web part(s). WebPartName: Cannon unregister UpdatePanel with ID ‘ctl00RTMPanel’ since it was not registerd with the ScripManager. This might occure if the UpdatePanel was removed from the control tree and later added again, which is not supported. Parameter name: updatePanel.   I faced this issue twice and both the time the issue was not what display here. This could be sure to any error in the WebPart. Following are list resolution from multiple instances.   RESOLUTION: 1. Check the WebPartName.webpart file. Check whether you have a proper PublicKeyToken value. When I face the issue the value was PublicKeyToken=$PublicKeyToken$. If you have used WSP builder then in the Visual Studio you will find this file at \WebPartsProject\12\TEMPLATE\FEATURES\WebPartName\WebPartName.webpart. Sometime when you create a new WebPart using WSP builder then you do not get

TIME – 25 Best Blogs of 2009

Every year Time makes a list of best blogs in the world. They chose 25 blogs from millions of blogs in the world, spanning politics, housekeeping, astronomy and everything in between. Below if a direct link to the TIME website for the list. I also copied it to easy comparison of last year best with this year best blogs.   25 Best Blogs of 2009     25 Best Blogs 2008   25 Best Blogs of 2009 Talking Points Memo The Huffington Post Lifehacker Metafilter The Daily Dish by Andrew Sullivan Freakonomics BoingBoing Got2BeGreen Zen Habits The Conscience of a Liberal: Paul Krugman Crooks and Liars Generación Y Mashable Slashfood Official Google Blog synthesis bleat /Film Seth Godin's Blog Deadspin: Spor

Howto Run Your HTML Static Website Locally In IIS On Windows PC

WHAT & WHY: As a developer many time you may wish if you could run your static HTML website locally on your computer (Windows 7, Windows Vista, Windows XP, Windows 2008). Although with Static website, you could easily download and double click the index.html or home.html file to open and run other pages. But this will not give you the real world senario. For example you will not able to use a path like /images/home-page-banner.jpg. You will have to use a relative paths like ../images/home-page-banner.jpg. Following are very easy steps to do so. These steps are for Static HTML website. I will also post steps for more advance websites that uses ASP, ASP.NET, Dotnetnuke etc and uses database server.   WHAT YOU NEED: 1. IIS Server installed on your local machine 2. FTP username, password to download files form your FTP server 3. Administrative rights on local machine. Many task will display messages requesting Administrative privilege to run the task.    STEPS: 1.