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Chemical Thermal Mechanical Electromagnetic Nuclear

Chemical Thermal Mechanical Electromagnetic Nuclear. Waves… a review. Waves are either longitudinal or transverse. Sound waves are longitudinal. Electromagnetic waves are transverse…. ?. ?. Electromagnetic waves. Produced by the movement of electrically charged particles

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Chemical Thermal Mechanical Electromagnetic Nuclear

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  1. ChemicalThermalMechanicalElectromagneticNuclear

  2. Waves… a review • Waves are either longitudinal or transverse. • Sound waves are longitudinal. • Electromagnetic waves are transverse…

  3. ? ?

  4. Electromagnetic waves • Produced by the movement of electrically charged particles • Can travel in a “vacuum” (they do NOT need a medium • Travel at the speed of light • Also known as EM waves • Click!http://amazing-space.stsci.edu/resources/explorations/light/

  5. Electromagnetic Spectrum

  6. Opaque and transparent

  7. Waves interact with materials Waves can be reflected, transmitted, or absorbed Created by KBuckner for Fried or Slide PBL 2010

  8. TRANSMISSION • Transmission is the passage of a wave through a medium • If light reflected by objects did not pass through air, windows, or most of the eye, we would not be able to see objects Created by KBuckner for Fried or Slide PBL 2010

  9. Absorption • Absorption is the disappearance of an wave into the medium • Absorption affects the way things look Created by KBuckner for Fried or Slide PBL 2010

  10. How materials transmit light • Transparent materials allow most of the light that strikes them to pass through • It is possible to see objects through a transparent material • Air, water, clear glass Created by KBuckner for Fried or Slide PBL 2010

  11. CAN YOU NAME SOME TRANSPARENT OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

  12. Translucent • Translucent materials transmit some light but cause it to spread in all directions • You can see light through these materials but no clearly • Lampshades, frosted glass, sheer fabrics, notebook paper Created by KBuckner for Fried or Slide PBL 2010

  13. CAN YOU NAME SOME TRANSLUCENT OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

  14. OPAQUE • Opaque materials do not allow any light to pass through them • Heavy fabrics, construction paper, ceramic mugs Created by KBuckner for Fried or Slide PBL 2010

  15. CAN YOU NAME SOME OPAQUE OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

  16. LET’S REVIEW • TRANSPARENT • TRANSLUCENT • OPAQUE Created by KBuckner for Fried or Slide PBL 2010

  17. Let’s Play a Game!!Rules: If the ball is tossed to you, answer the question that appears on the slide. *If you get the question right, toss the ball to a friend.*If you get the question wrong, toss the ball to your teacher.GOOD LUCK! Created by KBuckner for Fried or Slide PBL 2010

  18. This flask is …. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  19. This lamp shade is… • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  20. This vase is …. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  21. Aluminum Foil is… • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  22. This greenhouse is …. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  23. This wall is …. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  24. This rock is…. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  25. A magnifying glass is ….. • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  26. Tissues are… • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  27. Notebook Paper is… • Transparent • Translucent • Opaque Created by KBuckner for Fried or Slide PBL 2010

  28. Radio waves • Longest wavelength EM waves • Uses: • TV broadcasting • AM and FM broadcast radio • Avalanche beacons • Heart rate monitors • Cell phone communication

  29. Microwaves • Wavelengths from 1 mm- 1 m • Uses: • Microwave ovens • Bluetooth headsets • Broadband Wireless Internet • Radar • GPS

  30. Infrared Radiation • Wavelengths in between microwaves and visible light • Uses: • Night vision goggles • Remote controls • Heat-seeking missiles

  31. Visible light • Only type of EM wave able to be detected by the human eye • Violet is the highest frequency light • Red light is the lowest frequency light

  32. Ultraviolet • Shorter wavelengths than visible light • Uses: • Black lights • Sterilizing medical equipment • Water disinfection • Security images on money

  33. X-rays • Tiny wavelength, high energy waves • Uses: • Medical imaging • Airport security • Inspecting industrial welds

  34. X-rays continued • Are able to pass through our skin • Absorbed by our bones

  35. Gamma Rays • Smallest wavelengths, highest energy EM waves • Uses • Food irradiation • Cancer treatment • Treating wood flooring

  36. Doppler Effect

  37. Interference • http://abyss.uoregon.edu/~js/21st_century_science/lectures/lec13.html • http://www.colorado.edu/physics/2000/applets/twoslitsa.html

  38. Embed Video Nature of Light at http://app.discoveryeducation.com/player/view/assetGuid/DDED5A4E-C5FB-443B-9DC7-1B10ECF0924C

  39. Interference

  40. Image credits • http://www.antonine-education.co.uk/New_items/MUS/images/Making6.gif • http://www.geocities.com/researchtriangle/campus/6791/einstein12.jpg • http://abyss.uoregon.edu/~js/glossary/wave_particle.html • http://www.astro.princeton.edu/~gk/A402/electromagnetic_spectrum.jpg • http://science.hq.nasa.gov/kids/imagers/ems/radio.html • http://www.nentjes.info/Palace/radio-6.gif • http://www.mobilewhack.com/motorola-h12-bluetooth-headset.jpg • http://www.stuffintheair.com/radar-real-time-weather.html • http://www.imaging1.com/gallery/images/AV%20Night%20vision%20goggles.jpg • http://www.global-b2b-network.com/direct/dbimage/50329753/Study_Remote_Control.jpg • http://www.georgiaprismaward.com/The_Prism_Story_files/PRISM%20brand%20imagemed.jpg • http://science.hq.nasa.gov/kids/imagers/ems/uv.html • http://farm3.static.flickr.com/2385/2381723771_12548f4bd1.jpg?v=1217429879

  41. Image Credits • http://intamod.com.au/images/uv2.JPG • http://science.hq.nasa.gov/kids/imagers/ems/xrays.html • http://www.sciencelearn.org.nz/var/sciencelearn/storage/images/contexts/see_through_body/sci_media/neck_x_ray/17945-5-eng-NZ/neck_x_ray_full_size_portrait.jpg • http://www.epinion.eu/wordpress/wp-content/uploads/2008/05/airport-security1.jpg • http://science.hq.nasa.gov/kids/imagers/ems/gamma.html • http://www.aboutnuclear.org/print.cgi?fC=Food • http://www.roswellpark.org/files/1_2_1/brain_spinal/gamma%20knife%204c.jpg • http://www.scienceclarified.com/Di-El/Doppler-Effect.html • http://www.kirksville.k12.mo.us/khs/teacher_web/alternative/waves.html • http://abyss.uoregon.edu/~js/21st_century_science/lectures/lec13.html • http://www.physicsclassroom.com/Class/light/u12l1b.cfm • http://goldberg.lbl.gov/research_interferometry.php

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