Answer:
1. D
2. E
3. A
4. A- Transverse
5. D- destructive interference
Explanation:
1.
Wavelength is the distance between consecutive crests or troughs. In the above diagram, we're given distance between two troughs as D hence it is the wavelength
2.
Amplitude is the maximum displacement of a wave from its point of rest. The point of rest of the wave is zero in x axis. From the diagram, maximum dispacement is E as shown
3.
Crest is the highest point of the wave hence A while trough is the lowest point of a wave. Although not asked, trough is point C
4.
Traverse waves have tgeir oscillations perpendicular to the direction of the wave and that is the case for the above diagram
5.
In destructive interference, two waves which are out of phase cancel hence resultant amplitude is zero. The same scenario is seen here.
