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Waves

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  1. Waves Mr. King

  2. What are WAVES? • 1. The definition of a wave is? • Energy that causes something to move a distance. • 2. List some waves we will be exploring in this unit. • Sound, Earthquakes & Light.

  3. Transverse Wave Compression Wave • What is the difference between a transverse waves and a compression wave? Which one of these us a sound wave? • Sound waves uses both.

  4. What type of wave did your air cannon use? • A compression wave.

  5. Using the words “crest”, “trough”, “amplitude”, “ and “wavelength”, draw pictures explaining these parts of a wave.

  6. Using the words “crest”, “trough”, “amplitude”, “ and “wavelength”, draw pictures explaining these parts of a wave. Crest

  7. Using the words “crest”, “trough”, “amplitude”, “ and “wavelength”, draw pictures explaining these parts of a wave. Crest Trough

  8. Using the words “crest”, “trough”, “amplitude”, “ and “wavelength”, draw pictures explaining these parts of a wave. Crest Trough Wavelength

  9. Crest Trough Wavelength Amplitude • Using the words “crest”, “trough”, “amplitude”, “ and “wavelength”, draw pictures explaining these parts of a wave.

  10. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum?

  11. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum?

  12. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum? spectrum

  13. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum? Visible Spectrum R O Y G B I V Spectrum

  14. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum? Infrared Visible Spectrum R O Y G B I V Spectrum

  15. Light • Explain the words ultraviolet and infrared. Where does this fit in the visible spectrum? Ultraviolet Infrared Visible Spectrum R O Y G B I V Spectrum

  16. 2. What is the difference between incandescent and fluorescent? • Fluorescent uses gas in a light bulb and incandescent uses a filament a solid material that gets hot. • 3.What is the speed of light? • 300,000 km per second. • 4. Distinguish between opaque, translucent and transparent. • Opaque, light can’t travel through. Transparent is clear, light almost totally goes through. Translucent is like some light can go through.

  17. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point.

  18. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point.

  19. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex

  20. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  21. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  22. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  23. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  24. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  25. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  26. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  27. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  28. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  29. Draw a picture of a convex mirror and a concave mirror. Include light rays and label the focal point. Focal Point Convex Concave Which one of these mirrors will have a focal Point? What will the light rays do?

  30. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here.

  31. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here.

  32. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  33. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  34. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  35. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  36. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  37. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  38. Can you give me an example of both a convex and concave Mirror? Which one would you use in a solar collector? • 6. What is refracted light? Give an example of this. • Light that goes through two different mediums - (a medium is • Like air, water or glass. • 7. Draw and label some lenses here. Which one of these lenses will focus?

  39. 8. What good are lenses? Give at least 5 examples. • Glasses for vision, make fire, projectors ext. • 9. Explain the difference between a farsighted person and a nearsighted person. Use a drawing to explain this.

  40. Both unfocused Near sighted Far sighted

  41. Glasses or contacts Both focused Near sighted Far sighted

  42. 10. What scientific principle is explained using a prism? • Color Refraction

  43. 10. What scientific principle is explained using a prism? • Color Refraction

  44. 10. What scientific principle is explained using a prism? • Color Refraction R O Y G B I V

  45. 10. What scientific principle is explained using a prism? • Color Refraction R O Y G B I V This makes a rainbow.

  46. 11. What does the word Laser stand for? How are lasers used today? • Light Amplification by Simulated Emissions or Radiation. Lasers are used in surgery and manufacturing. Also in weapons. • 12. How are radio waves related to light waves? • Longer wave length is a radio wave. Shorter ones are light waves.

  47. Sound • 1. What two things do you need for sound to be heard? • A vibration and a medium (anything sound can travel through-air-water) • 2. What is sound made up of? • Compressed medium • 3. What does an oscilloscope do? • Measures pitch or wavelength of the sound also the amplitude.

  48. Crest Trough Wavelength Amplitude Remember this?

  49. 4. Explain how sound travels through air, space, steel or water. • Air - slow • Space - does not travel at all • Water - somewhat fast • Steel - very fast • 5. What materials could you use to absorb sound, why would you want to absorb sound? Where does the sound energy go? • Fiberglass sound board is very good because the fiberglass vibrates and heats up. This is used to quiet room.

  50. 6. What does SONAR stand for? • Sound Navigation Ranging • 7. What is the speed of sound? Compare this to the speed of light. • Solid - 5000 meters/second • Water - 1460 meters/second • Air - 335 meters/second • Compared to light which is 300,000,000 meter/second • 8. Define frequency, ultrasonic and pitch • how fast a wave travels or how many cycles per second. Defined in Hertz • Ultrasonic is up to and over 20,000 Hertz & pitch is high and low notes.