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Describe the interaction between a wave and a boundary.
Describe the interaction between a wave and a boundary.
13.3.A.1 A wave that travels from one medium to another can be transmitted or reflected depending on the properties of the boundary separating the two media.
13.3.A.1.iWhen a wave or wave pulse travels from one medium to another (for example a wave pulse traveling between low-mass and high-mass strings), reflected and transmitted waves or wave pulses will result.
13.3.A.1.ii
The reflected wave is inverted if the transmitted wave travels into a medium in which the speed of the wave decreases.
From high speed to low speed
(low density to high density)
Reflection from a HARD boundary
13.3.A.1.iii
The reflected wave is not inverted if the transmitted wave travels into a medium in which the speed of the wave increases.
From low speed to high speed
(high density to low density)
Reflection from a SOFT boundary
13.3.A.1.ivThe frequency of a wave does not change when it travels from one medium to another.
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