Group+3

17.3 Behavior of Waves
Diffraction- Is the bending of a wave as it moves around an obstical or passes through a narrow opening. Example: The wall blocks the waves so it will go around or through.



Reflection-Reflection occurs when a wave bounces off a surface that cannot pass through. Reflection does not change the speed or frequancy of a wave, but the wave can be flipped upside down. Example: See how the bird is double, That's because the birds reflection is shining off the water because it cant go through.



Interference-Occurs when 2 or more waves overlap and combine together.

Example: The 2 ripples are colliding, they cannot continue on the same path they were originally on.

Constructive-When 2 or more waves combine to produce a wave with a larger displacement. Example: The mother pushing her daughter on the swing is constructive. The force the mother is pushing makes her daughter go higher. Destructive- When 2 or more wave combine to produce a wave with a smaller displacement. Example: The girl on the swing has little motion due to destructive. Standing wave-A wave the appears to stay in one place. It does not seem to move through the medium. Example: you tie the 2 ends of a rope to a chair and shake the other end, waves travel up the rope, reflect off the chair , and travel back down the rope.



Refraction-Is the blending of waves as it enters a new medium at an angle. When the wave enters a medium at a angle, Refraction occurs Example:The waves go thorugh the medium at a angle which causes refraction.