University:
Winston-Salem Forsyth County Schools
Course:
AP Physics I
Academic year:

2014
Views:

240

Pages:

11
Author:

defmunkee6oxf

Interactions of Waves EQ: How do waves interact with each other? Reflection: The bouncing back of a wave after it strikes a barrier. When water waves hit the side of the swimming pool, they bounce back. Angle of incidence Incoming Wave Angle of reflection Reflected wave EQ: How do waves interact with each other? Law of Reflection • The angle of reflection equals the angle of incidence EQ: How do waves interact with each other? Refraction The bending of a wave as it crosses the boundary between two mediums. This is caused by change in speed as it enters the second medium. What are the two mediums the straw has entered? EQ: How do waves interact with each other? Diffraction- The spreading out or bending of waves as they pass through a hole in a barrier or around the edges of a barrier. http://ngsir.netfirms.com/en glishhtm/Diffraction.htm http://ngsir.netfirms.com/en glishhtm/Diffraction2.htm http://ngsir.netfirms.com/en glishhtm/Diffraction3.htm EQ: How do waves interact with each other? interference The meeting and combining of waves; when two or waves meet, they have an effect on each other EQ: How do waves interact with each other? Constructive Interference • Two waves combine to make a wave with a larger amplitude EQ: How do waves interact with each other? Destructive Interference • When the amplitudes of two waves combine with each other producing a smaller amplitude EQ: How do waves interact with each other? Standing Wave - The result of the interference of the two waves below is a new wave pattern known as a standing wave pattern. Standing waves are produced whenever two waves of identical frequency interfere with one another while traveling opposite directions along the same medium. EQ: How do waves interact with each other? nodes and antinodes • Nodes – when destructive interference causes two waves to combine to produce an amplitude of zero • Antinodes – combined amplitude of the two waves combine to produce amplitudes greater than zero. EQ: How do waves interact with each other? Resonance • Occurs when vibrations traveling through an object match the object’s natural frequency EQ: How do waves interact with each other?