it is possable for a crest to overlap a trough and they cancel each other out
destructive interference
constructive wave interference, where the crests and troughs 'add' so are increased in amplitude.
Yes.
The greater the amplitude, the higher the crests and lower the troughs.
Wave length.
destructive interference
constructive wave interference, where the crests and troughs 'add' so are increased in amplitude.
No
Yes.
The greater the amplitude, the higher the crests and lower the troughs.
Wavelength is the measure of distance between adjacent crests or troughs.
Wave length.
That's the wave's frequency.
The distance between the either the crests or troughs of one cycle in a wave.
Principle of Super position of waves.
Two.
That's called the wavelength.