Mechanical Waves This unit is about an oscillation of matter that transfers energy through a medium. Since mechanical waves require a medium to travel through, mechanical waves cannot travel as far as Electromagnetic Waves due to the particles that would slow it down.
Wave Investigations Mechanical waves are disruptions in a medium that transfer energy and momentum from one point to another point, without actually moving molecules to the next point.
Superposition of Waves At every place where two disturbances in a wave meet, they create a wave interference. However, it isn't an interference as the waves combine once, and then split back not losing any energy or momentum.
Medium Boundaries The boundaries of "Medium" (or the area in which the waves travel), are where there are particles that can hold the energy/momentum of the wave. If there are no particles(a vacuum) then those are the boundaries for a medium.
Standing Waves Two or more waves traveling in the same medium in independent directions. When the wave comes to the end of the medium, it reflects back down the medium until it runs out of energy.
Speed of Standing Waves The velocity of a Standing Wave is determined by the tension of the string and the mass per unit for the length of the string.