OBJECTIVES: HOW TO MANIPULATE WIND ENERGY Two ways glaciers move

ENERGY Is the ability to do work RENEWABLE ENERGY SOURCENON-RENEWABLE ENERGY SOURCE Energy source we can use over and over again Energy source we are using up and cannot recreate in a short period of time

ANALYZING OUR SOURCE

GENERATING WIND POWER 1 2 3

1 2 3 Attach a voltage probe Attach a current probe POWER = VOLTAGE x CURRENT

LET THE GAMES BEGIN Competition to see which group can build the most powerful wind device Each group will discuss their plan for designing a wind-turbine: – Thickness of paper – How much tape – How much clay – Length of straw – Shape of the blade

WINDMILL DESIGN & MATERIAL SELECTION List at least 3 factors that make a wind-powered device a good alternative energy converter Illustrate the shape of your windmill blades. What are the benefits of the shape you selected? Which thickness did you select for your blade? Why? How will you know if your blade design is effective and efficient?

TRIAL AND ERROR Describe the features of the most efficient windmill. List at least 3 features What one variable will you change about your windmill to improve the efficiency of your model? Did the changes you made improve the efficiency of your model?

Sequence the cutting of the template to make it easier – Show students the one I built Wrap straws with layer or two of tape to stop blades from sliding off one end (other end will have clay) Bring handful of leads and jumpers Make sure students test at 3 different speeds MAKE EXCEL FOR STUDENTS TO INPUT THEIR I,V,P … Make sure blade tips are not bent

THINK OUTSIDE OF THE BOX ROOFTOP WIND TURBINE HIGHWAY WIND TURBINE

References wind_energy_data_2007.jpg -a-highway-signage-to-produce-wind-energy_179.jpg