Wind Turbine Design

Grade 1 – ENERGY IN OUR LIVES What have we learned? Wind has energy. The sun is the principal source of energy for the earth. Heat makes air move. Everything that happens is the result of using some form of energy. We can use the wind to do work (energy). Using energy (electricity) can create pollution. Humans need to be responsible for the ways in which we use energy. Examine our energy use. (see 1.1) Where does our electricity come from?

Grade 2 – MOVEMENT What have we learned? Wind can power a simple machine. Movement is a change in the position of an object. Blades on a pinwheel change position when blown by the wind. Simple machines help objects to move. We can use the wind to power a winch (lift an object). Mechanisms are made up of one or more simple machines. Wind turbines that generate electricity or pump water use gears, pulleys. Simple machines and mechanisms make life easier and/or more enjoyable for humans. Wind power allows us to generate clean electricity and can do work for us.

Grade 3 – FORCES CAUSING MOVEMENT What have we learned? Wind is a force of nature. There are several types of forces that cause movement. Heat makes air move (wind). Forces cause objects to speed-up, slow down, or change direction through direct contact or through interaction at a distance. Wind can be harnessed to turn a turbine. Forces in nature, such as high winds or water, can have a significant impact on humans and the environment, and need to be regarded with respect. A light breeze can lift an object.

Further connections Grade 4 – PULLEYS AND GEARS Grade 5 – FORCES ACTING ON STRUCTURES AND MECHANISMS Grade 5 – CONSERVATION OF ENERGY AND RESOURCES Grade 6 – FLIGHT Grade 6 - ELECTRICITY AND ELECTRICAL DEVICES

Grade 7 – FORM AND FUNCTION What have we learned? With proper design a wind turbine is more effective and efficient. Structures have a purpose. Wind turbines are an important source of clean energy. The form of a structure is dependent on its function. The structural design of a wind turbine is dependent on location and purpose. The interaction between structures and forces is predictable. The location and angle of the blades of a turbine affect its ability to harness the winds energy (minimize friction).

Grade 8 – SYSTEMS IN ACTION What have we learned? Production of electricity is a system that has many effects on society. Systems are designed to accomplish tasks. Wind turbines have been designed to produce electricity. All systems include an input and an output. Harnessing wind is a clean energy alternative that is worth examining (both pros and cons). Systems are designed to optimize human and natural resources. Compare inputs and outputs of different methods of electricity generation (wind, solar, nuclear, coal, hydro, petroleum, geo-thermal).