DA910F76-FC3D-461E-A455-72D945FD4C7D-23138dj

This video demonstrates constructive interference, here two crest waves (could also be two trough waves) collide to make one wave who’s size is the sum of the previous waves, and then it separates back into the two waves and they continue in the same direction.

13F25ACE-5CB8-4B98-AFE3-978E3FFCC575-2bq0xh4

This video demonstrates destructive interference, here a crest and a trough collide, when they collide they cancel out, but then turn back to their original waves and continue moving.

449B9767-ECC9-4C1A-9FE0-D99F308F2694-2lm2xzk

This video demonstrates standings waves. The waves have the same amplitude and and wavelength, as a result the waves look stationary and five nodes are formed.