Wave Interactions<br />Students will be able to<br />Describe reflection, refraction, and diffraction<br />Explain interfe...
Reflection<br />When an object hits a surface through which it can not pass, it bounces back.<br />18<br />
Reflection<br />Angle of incidence = Angle of reflection<br />18<br />
Refraction<br />Bending of waves<br />	When a wave enters a new medium its speed changes.<br />19<br />
Diffraction<br />When a wave moves around a barrier or through an opening, it bends and spreads out.<br />20<br />
Interference<br />What happens when two waves meet.<br />	Constructive = Working together<br />	Destructive = Subtracting ...
Interference<br />21<br />
Standing Waves<br />If the incoming wave and the reflected way have the correct frequency, they produce a combined wave th...
Standing Waves<br />22<br />
Resonance<br />Most objects have a natural frequency of vibration<br />Resonance<br />	Increase amplitude occurs when exte...
Resonance<br />23<br />
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Wave Interactions

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Wave Interactions

  1. 1. Wave Interactions<br />Students will be able to<br />Describe reflection, refraction, and diffraction<br />Explain interference and standing waves<br />Identify Seismic Waves<br />Find epicenter of earthquake using seismograph<br />Page 17<br />
  2. 2. Reflection<br />When an object hits a surface through which it can not pass, it bounces back.<br />18<br />
  3. 3. Reflection<br />Angle of incidence = Angle of reflection<br />18<br />
  4. 4. Refraction<br />Bending of waves<br /> When a wave enters a new medium its speed changes.<br />19<br />
  5. 5. Diffraction<br />When a wave moves around a barrier or through an opening, it bends and spreads out.<br />20<br />
  6. 6. Interference<br />What happens when two waves meet.<br /> Constructive = Working together<br /> Destructive = Subtracting from each other<br />20<br />
  7. 7. Interference<br />21<br />
  8. 8. Standing Waves<br />If the incoming wave and the reflected way have the correct frequency, they produce a combined wave that appears to be standing still<br />Node = zero amplitude<br />Antinode = maximum amplitude<br />22<br />
  9. 9. Standing Waves<br />22<br />
  10. 10. Resonance<br />Most objects have a natural frequency of vibration<br />Resonance<br /> Increase amplitude occurs when external vibrations match the objects natural frequency<br />Music<br /> Stronger, clearer sounds<br />23<br />
  11. 11. Resonance<br />23<br />
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