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The Power of the Wind

The Power of the Wind. Snohomish County PUD Mr. Wiederspohn. Today we are going to:. Think, talk and work like scientists 10 teams - do 10 different experiments at the same time Present your findings Divide into 5 teams of experts A water pumping contest. The Scientific Method. Q P

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The Power of the Wind

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  1. The Power of the Wind Snohomish County PUD Mr. Wiederspohn

  2. Today we are going to: • Think, talk and work like scientists • 10 teams - do 10 different experiments at the same time • Present your findings • Divide into 5 teams of experts • A water pumping contest

  3. The Scientific Method • Q • P • P • D • C

  4. Sample Investigative QuestionHow does brand of fishfood affect fishes’ growth rate? • Manipulated variable is brand of fishfood • Responding variable is fishes growth rate

  5. What are these things?What do you notice?

  6. Why would we want to build wind turbines?

  7. How does a wind turbine work? Inputs? Outputs?

  8. Thinking about your prediction • What do you think you will discover after doing your experiment? • Fill in the blank and circle more or less • Teams 1-8 try to use the words “increase”, “decrease” You DO NOT change your prediction

  9. When you are finished with your blade testing… • Do all testing- data chart filled in • Look for a trend (pattern) in the data/Compare your trend with your partner team? Retest if necessary • Put all materials back into your box • Work together to finish writing the conclusion. • (If you finish early)Complete the answers to the questions on page 2

  10. My new job is to be part of an expertengineering team that must design and build the very best set of wind turbine blades. I cannot do this alone, therefore, success depends on all of us experts working together.

  11. To get started have a meeting where each of you shares your recommendation and test data with your group. Record your findings on the giant poster. • After everyone has had time to share their expertise, complete a detailed DESIGN PLAN that the team will follow when building your new set of SUPER BLADES!! • Get your design plan approved by your teacher, then you are ready for your materials and you can start building.

  12. Your Engineering Jobs: • Share your data and recommendations with the team • Complete a design plan • Build your blades according to your design. Remember, craftsmanship is important • Test/modify your prototype. • Record your test data, especially your maximum voltage output.

  13. Blade Competition

  14. Water Pumping Results

  15. What were the 5 different blade variables tested today? • Number of blades • Angle/pitch of the blades • Weight/mass of the blades • Length of the blades • Shape of the blades

  16. Name other blade variables that were not tested today

  17. What other variables (besides blades) could be tested?

  18. More controlled variables

  19. Advantages of using wind to generate electricity • Disadvantages

  20. 5. YOUR OPINION

  21. What blade variables do you think could affect electrical output? • Number of blades • Blade pitch • Blade mass • Materials used • Blade length • Blade shape/surface area • Blade twist

  22. You are now an EXPERT!Be ready for your next JOB! • What variable were you testing? Did this variable have an effect on electrical output? • What blade design do you recommend would be the best? Show the data that proves that your recommendation a good one.

  23. Manipulated(changed) variable • This is the variable that you are testing

  24. Responding(measured variable) • This is the variable that you are measuring

  25. Controlled variables • These are variables that stay the same

  26. Testing TeamsWhat is your QUESTION? • Teams 1 and 2 will test Number of Blades • Teams 3 and 4 will test Pitch (angle) of the Blades • Teams 5 and 6 will test Mass (weight) of the Blades • Teams 7 and 8 will test Length of Blades • Teams 9 and 10 will test Shape of the Blades

  27. Wind Energy is KINETIC ENERGY • Kinetic energy is the energy of MOTION • Wind is…….. AIR IN MOTION

  28. Wind Turbine Perspective

  29. Science is the study of ENERGY Energy= the universe • E= mc2

  30. Where are wind projects built?

  31. What creates wind?

  32. How is a wind farm part of the entire electricity-generating system?

  33. Where are wind farms built?

  34. Conclusion: • The ______________ of the blades had an effect on electrical output. We predicted that ………………. Our results showed that in order to increase electrical output you ……..

  35. What variables do you think affect the power output from wind turbines? • Wind speed • Generators • Size of turbine • Gear ratio • Location • Blade design

  36. Discussion Questions • What variable has the greatest impact on power output? • Can the data we collected today be related to full scale wind turbines? How? • What are some advantages and disadvantages of wind power? • What is the one thing you will remember the most about today’s lesson?

  37. Conclusion: Our hypothesis stated that_________ ____________and was (correct/incorrect). Our set up with the highest electrical output at _(#)__ was _________ whereas the blade set up with the lowest electrical output at only __(#__ was __________. Therefore the best blade design would be _____________.

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