reflection - the bouncing back of an object or wave when it hits a surface through which it cannot pass, refraction - the bending of waves as they enter a new medium at an angle, caused by a change in speed, diffraction - the bending or spreading of waves as they move around a barrier or pass through an opening, interference - the interaction between waves that meet, constructive interference - the interference that occurs when two waves combine to make a wave with an amplitude larger than the amplitude of either of the individual waves, destructive interference - the interference that occurs when two waves combine to make a wave with an amplitude smaller than the amplitude of either of the individual waves, standing wave - a wave that appears to stand in one place even though it is two waves interfering as they pass through each other, node - a point of zero amplitude on a standing wave, antinode - a point of maximum amplitude on a standing wave, resonance - the increase in the amplitude of a vibration that occurs when external vibrations match an object's natural frequency,

Lesson 3 Interaction with Waves

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