3. Wave Notes

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3. Wave Notes

  1. 1. Waves<br />
  2. 2. Wave:<br />Transportation of forms of energy<br />Light, heat, and sound travel as waves<br />Most travel through a medium (not electromagnetic waves)<br />
  3. 3. Medium<br />Matter through which waves pass through<br />
  4. 4. Transverse Waves:<br />Moves at right angles to the direction of the waves energy<br />Matter moves up and down, while energy moves side to side<br />Demo:<br />MATTER<br />ENERGY<br />
  5. 5. Longitudinal Waves<br />a.k.a. compressional waves<br />Medium moves in the same direction as the energy of the wave<br />Energy and the matter move side to side<br />Demo:<br />MATTER<br />ENERGY<br />
  6. 6. CREST – high point on wave<br />WAVELENGTH – distance on a wave from one point to the next identical point<br />AMPLITUDE - height of wave, directly related to energy<br />TROUGH – low point on a wave<br />
  7. 7. WAVELENGTH – distance on a wave from one point to the next identical point (from one compression to another)<br />COMPRESSION<br />RAREFRACTION<br />
  8. 8. Reflection:<br />Bouncing back of wave<br />Law of Reflection, the angle at which the wave hits will be the same angle at which it reflects<br />
  9. 9. Diffraction:<br />The bending of waves<br />
  10. 10. Wave Interference:<br />Two or more waves coming in contact with another<br />Constructive interference produces larger amplitudes<br />Destructive interference produces smaller amplitudes<br />
  11. 11. Ocean Wave Creation:<br />Winds cause the formation of waves<br />The faster and longer the wind, the larger the wave<br />Size also depends on the fetch, the span of water over which the wind blows<br />Larger waves <br />Smaller waves<br />Fetch<br />Fetch<br />wind<br />
  12. 12. Ocean Wave Movement:<br />Matter moves in a circular pattern as energy passes through<br />
  13. 13. Types of Ocean Waves:<br />Seas – choppy water due to storm winds resulting in peaked waves with flat troughs<br />Swells – once away from winds crests and troughs smooth out into typical waves<br />Breaks/Surf – in shallow water, waves slow and pile up and become higher and steeper, eventually falling over<br />
  14. 14. Storm Winds<br />Breaks & Surf<br />Swells<br />Seas<br />
  15. 15. Tidal Wave:<br />A general term used to describe a large wave which may goes against wind and wave direction<br />Describes:<br />Tidal bore<br />Tidal surge<br />Tsunami<br />
  16. 16. Tidal Bore:<br />Large movement of water due the funneling of an incoming tide into a narrow river or bay<br />
  17. 17. Tidal Surge:<br />A temporary increase in the volume of water, usually due to a hurricane, that causes waves to go over top of defenses<br />
  18. 18. Tsunami (Tidal Wave):<br />A tidal surge or wave caused by an earthquake<br />

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