The law of thermodynamics states that energy cannot be created or destroyed. Energy is transferred and transformed. Humans use energy daily without thinking.

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Presentation transcript:

The law of thermodynamics states that energy cannot be created or destroyed. Energy is transferred and transformed. Humans use energy daily without thinking about it Our breakfast turns into kinetic energy with little concern for the process We turn on the lights and take food from the refrigerator without a real appreciation Energy Review

Discuss With Your Table What would happen if there was no food for breakfast? How would your day be different if you could not turn on the TV, microwave, or be able to charge your cell phone? If there was no electricity? What is famine?

Where does electricity come from in poor countries? Listen to this story of how one boy’s desire to help his family turned him into an engineering hero!this story

What is needed? Discuss with your group the things that you think are needed to make a wind turbine to generate electricity.

Wind Energy Meet William KamkwamMeet William Kamkwamba

Why Harness the Wind? There are benefits and costs of renewable and nonrenewable energy sources. What are the benefits (pros) of wind energy? What are the costs (cons) of wind energy? Why did William Kamkwamba build a wind turbine?

Our classroom connection: We will design wind turbines and measure the electricity that they generate!. Independent variables: blade shape, number of blades and angle of blades. Dependent variable: amount of electricity generated