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4-H Afterschool The NEED Project & The Department of Energy Present… PowerPoint Presentation
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4-H Afterschool The NEED Project & The Department of Energy Present…

4-H Afterschool The NEED Project & The Department of Energy Present…

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4-H Afterschool The NEED Project & The Department of Energy Present…

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  1. 4-H AfterschoolThe NEED Project & The Department of Energy Present…

  2. Light and Lighting:Science Camp 2004

  3. Science Camp begins with the 4-H Pledge

  4. Using Thermometers • Light is radiant energy that travels in waves • We can measure heat with a thermometer

  5. Light Can Be Absorbed And Transformed into Heat • Light waves can be reflected, refracted, and absorbed by substances • When light is absorbed by substances, it is often transformed into thermal energy (heat)

  6. Solar Balloon And Radiometer • When substances absorb light and turn it into heat, they usually expand

  7. Solar Balloon

  8. Light And Chemical Changes • Chemical reactions can produce light • Heat can speed chemical reactions; cold can slow them down

  9. Solar Beads • Light can produce chemical changes in substances

  10. Glow Toys • Some substances can store light and release it as light at a later time

  11. Light Can Be Separated • Visible light is made of many wavelengths of radiant energy • Visible light can be separated into different colors of light according to its wavelength

  12. Light Can Be Reflected • Light travels in a straight line • The angle of incidence of light is equal to the angle of reflection • Light waves can be reflected

  13. Light Can Be Turned Into Electricity • A Photovoltaic Cell can convert light into electricity • Electricity can be used to perform work

  14. It Takes Energy To Make Light • Some lightbulbs produce more heat than others • Some lightbulbs are more energy efficient than others

  15. It Takes Energy to Make Light • Life cycle cost is the total cost of using an appliance and is a more important measure than purchase price

  16. Essex Manor Poster Presentation At The Resident Council Meeting

  17. Mineral Manor Poster Presentation At The Resident Council Meeting

  18. Essex and Mineral ManorPoster Presentation At The State Fair 2004

  19. Our Ribbon for theNevada State Fair

  20. Thank You! • We appreciate the opportunity you provided by selecting our 4-H ASC Program in Nevada to be a pilot site. • The youth in Northern Nevada enjoyed this learning experience and benefited from this Light & Lighting Project. • Cheri Osborn, Cindy Smullen, and Maureen O’Brien • University of Nevada Cooperative Extension Bringing the University to You • Reno NV www.unce.unr.edu