when a wave touches a fixed end
Flips upside-down, and travels backwards
when a wave touches a free end
Bounces off
when two pulses on the same end collide
make a super crest (size of amplitudes added) and then two waves move forward
when two pules (same size) on opposite ends (top, bottom) meet
make a node, then move forward
when two pulses (different sizes) on opposite ends (top, bottom) meet
make a crest, and move forward
Define constructive interference
Waves on the same side collide and add
Define destructive interference
Waves on different sides collide and move one wave with amplitude = amplitude 1 - amplitude 2