Elementary School,Middle School, High School
Green Science Windmill Generator Eco Toy for younger audiences. Water or Soda Bottle with weight in bottom. OR Thames & Kosmos Alternative Energy and Environmental Science Wind Power for higher grades. Fan is needed for both kits.
Science Theatre demonstrators must keep the safety of themselves and their audience in mind at all times. All Science Theatre demonstrators must have read through the Safety Training page. The ST Safety Box with first aid kit, fire extinguisher, etc. should always be available to demonstrators. Always wear safety gloves, glasses, and a labcoat if handling chemicals; always perform potentially dangerous demonstrations at a safe distance from the audience; and always keep a very close eye on any volunteers you call from the audience. Choking Hazard for younger audiences. Don't stick the windmill pieces in your mouth or let others do the same.
Make sure you have all the pieces for the Green Science Windmill. It is simple enough to prepare and should be done during the demo to show the younger audiences how easy it is to use wind energy. It will also be more interesting for them to be engaged in putting it together.
For the Wind Power kit, decide which experiment you would like to use. There are 20 different demonstrations. It is recommended to choose around five, depending on how much time is allotted. Read the experiment instructions in the manual and be sure to have all the required pieces.
Green Science Windmill:
Have the kids gather around you. Have the windmill ready to put together. Assemble the windmill with the help of the children and then ask for a volunteer. Attach the LED lights and tell the volunteer to turn on the fan, whichever setting they would like. The faster the propellers spin, the brighter the lights will glow. Ask the volunteer to walk around the windmill with the fan still running. It will be noted that the windmill turns to follow the wind. Ask for other volunteers to control the fan and answer any questions the audience may have.
For the Wind Power Kit, it really depends on which experiments you plan on performing. The experiment manual holds all of the details. Always ask for volunteers to aid you in the experiments and engage the audience as much as possible. Allow them to control the fan, choose what the windmill powers, etc.
What to Say
Where do you think the electricity in your house comes from? Some of it may come from a Windmill, which are found all over the world. As neat as they are to look at, the Windmill is one of the simplest methods of creating power. And wind is a resource that is renewable, it never runs out. In the simplest of terms, the wind runs over the blades of the windmill and lifts them, causing them to turn. The blades are connected to a drive shaft. The rotating blades turn the generator within the windmill, which in turn generates energy. It is as simple as that. We would run into lots of problems if there was no wind, but windmills are a strong alternative source of energy to keep our Earth healthier. **And there are so simple to make, as you can see we just made one out of a water bottle! You can make them at home!**
Meant for Green Science Kit
More details can be added from the experiment details in the Wind Power Kit
Why It Is
It is all based on the wind cycle. Because of the different terrains of the earth, air is warmed up and cooled down at different rates. These cooling/heating patterns cause wind. During the day, the winds are caused by the air over land heating up much faster than over water. The air over the water rushes in to replace the rising warm air. At night, the pattern reverses, with the air cooling faster over land than over water. Both of these patterns cause wind, which fuels the power of the Windmill.
Real Life Examples
Pinwheels are an example of how how wind can blow through and over the propellers. Different strengths of wind can either make the propellers rotate slowly or quickly.