Adapted from The NEED Project, Manassas, VA Lesson 10 Overhead 1 of 8
From The NEED Project, Manassas, VA Lesson 10 Overhead 2 of 8
Lesson 10 Overhead 3 of 8 Coal Fired Power Plant http://c1cleantechnicacom.wpengine.netdna-cdn.com/files/2011/10/coal_power_plant_datteln_2_crop1-e1318788714370.png
From The NEED Project, Manassas, VA Lesson 10 Overhead 4a of 8
From The NEED Project, Manassas, VA Lesson 10 Overhead 4b of 8
From The NEED Project, Manassas, VA Lesson 10 Overhead 5 of 8
Lesson 10 Overhead 6 of 8 How Electricity Flows in a Wire Electrons jump from Atom #1 to Atom #2, from Atom #2 to Atom #3, and so on, to create an electrical current. Magnets can cause electrons to jump from one atom to the next atom in a wire.
From The NEED Project, Manassas, VA Lesson 10 Overhead 7a of 8
Lesson 10 Overhead 7b of 8
Lesson 10 Overhead 8 of 8 Assessment Write a few sentences in your science notebook to describe what needs to happen to make electricity flow through a wire. Describe the energy flow required to light a light bulb when using a turbine generator driven by wind power.
Lesson 10 Student handout, page 1 Name Date Block LESSON 10 - Electricity and Turbine Generator Investigation Question: How will distance from the fan and fan speed affect amount of volts a wind turbine can produce? Hypothesis: If Then Because Procedure: 1. Connect two wires from wind turbine to two alligator connecting wires. 2. Connect alligator connecting wires to each end of the voltage meter. 3. Turn fan on low setting. 4. Turn knob on the voltage meter to the right to 200 V. 5. Hold propeller of wind generator up to the fan at 10 cm distance (you may need to start blades spinning). 6. **SAFETY ALERT** DO NOT GET FINGERS OR WIRES NEAR SPINNING PROPELLER! 7. Read voltage meter and record results. 8. Repeat steps 4 through 7 for 20 cm and 30 cm distance at low, medium and high fan speeds. 9. REMEMBER TO TURN OFF METER WHEN NOT USING TO CONSERVE BATTERY.
Name Date Block Page 2 Data: Fan Speed Distance (cm) Voltage (V) Low 10 Low 20 Low 40 Medium 10 Medium 20 Medium 40 High 10 High 20 High 40
Page 3 Name Date Block Draw and label energy flow diagram starting with the SUN and ending with the light bulb. Analysis: Answer question Summarize Data Explain Data (why did this happen related it to energy transfer/flow?) Was Hypothesis Correct?
Name Date Block LESSON 10 - Electricity and Turbine Generator Investigation Lesson 10 Teacher answer key to student handout Question: How will distance from the fan and fan speed affect amount of volts a wind turbine can produce? Hypothesis: If -- a wind turbine is brought closer to a fan at different speeds Then the generator will produce higher/lower amount of volts Because (energy transfer) Procedure: 1. Connect two wires from wind turbine to two alligator connecting wires. 2. Connect alligator connecting wires to each end of the voltage meter. 3. Turn fan on low setting. 4. Turn knob on the voltage meter to the right to 200 V. 5. Hold propeller of wind generator up to the fan at 10 cm distance (you may need to start blades spinning). 6. **SAFETY ALERT** DO NOT GET FINGERS OR WIRES NEAR SPINNING PROPELLER! 7. Read voltage meter and record results. 8. Repeat steps 4 through 7 for 10cm and 30 cm distance at low, medium and high fan speeds. 9. REMEMBER TO TURN OFF METER WHEN NOT USING TO CONSERVE BATTERY.
Name Date Block Data: Fan Speed Distance (cm) Voltage (V) Low 10 Answers may vary Low 20 Low 40 Medium 10 Medium 20 Medium 40 High 10 High 20 High 40
Name Date Block Draw and label energy flow diagram starting with the SUN and ending with the light bulb. Analysis: Answer question Summarize Data Explain Data (why did this happen related it to energy transfer/flow?) Was Hypothesis Correct? Answers will vary
Extension Lesson 10 TURBINE GENERATORS Magnetic Tesla Turbine Generator http://www.youtube.com/watch?v=ec4swoyyutq According to Faraday s law of induction a moving magnetic field will cause electrons to move. Generators create electron movement in the copper wire coils contained within by moving them through a magnetic field. 1. Go to this website and use this interactive tool. What did you observe? http://phet.colorado.edu/en/simulation/generator 2. Use this website http://turbinegenerator.org Choose one type of Turbine and write a paragraph about it and draw a picture. Include 1) How it works, 2) where you would find this type of turbine, 3) What are pro s and con s in this type of power generator.
Extension Lesson 10 COAL How a coal power station works http://www.youtube.com/watch?v=sexg8k5_uvu 1. Define: chemical energy, electrical energy, thermal energy, radiant energy. 1. Create a diagram showing where the coal comes from. HINT: Start with the source of all energy! If you need a hint.watch this 16 second YouTube http://www.youtube.com/watch?v=_wi2gdt_n48 3. Using your vocabulary words, identify on both diagrams, type of energy that is represented. Example: by the sun, write radiant energy.
Extension Lesson 10 WIND Puget Sound Energy's Wild Horse Wind and Solar Facility features 149 wind turbines. This video tour takes you inside the 351-foot-tall wind turbines, giving a firsthand look at how renewable energy works. Directions to the Wild Horse visitors' center can be found at PSE.com. http://www.youtube.com/watch?v=8lwtqdheazg Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth. Wind flow patterns are modified by the earth's terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when "harvested" by modern wind turbines, can be used to generate electricity. 1. Define: turbine, blade, generator, tower. 2. Go to this website http://windeis.anl.gov/guide/basics/ and design a FAQ for one of your classmates about Wind Energy. Minimum of 5 Q & A.