Constructive Waves- constructive waves are when two separate waves are on the same surface and they are moving towards each other in an attempt to collide. The name "Constructive" gives it away due to the fact that when the waves collide, they construct into a higher and different wave height. They are added together to create a wave with larger amplitude. Of course, the amplitude and wavelength can be different, but when they are added, the smaller one is forced up onto the larger one. If the wavelength and amplitude are the same, they are just twice the height as the original one. After the mere second of collision, the wavelengths and amplitude of the two different waves remain the same as they go the opposite direction they were originally traveling towards.
Destructive Waves- destructive waves are when two separate waves on the opposite surfaces and they are still moving towards each other in a desperate attempt to collide. The name "Destructive" also gives it away, when the waves collide, they will cause either deformed shapes or the top of the larger shape sinking the same width as the smaller shape into the larger shape's structure. Now, it can (in some cases) move the opposite directions into the below section of a wave. Thus, if the two amplitudes have opposite signs, they will subtract to form a combined wave with a lower amplitude.
