When the equal pulses met in the middle. the amplitude of the combined wave was [ Select ] ["larger", "smaller"] than the individual waves. Observing using slow motion video, the amplitude was approximately [ Select ] ["one half as large", "twice as large"] as the individual waves.

When the big and small pulses on the same side met in the middle, the amplitude of the large wave got [ Select ] ["significantly larger", "slightly larger", "slightly smaller", "significantly smaller"] . When the pulses were on opposite sides of the spring, the amplitude of the large wave got [ Select ] ["significantly larger", "slightly larger", "slightly smaller", "significantly smaller"] .

When the equal and opposite pulses met in the middle, the amplitude of the combined wave was [ Select ] ["greater", "less"] that than the individual waves. With slow motion video, the amplitude was [ Select ] ["large", "small", "almost zero"] . The slinky was [ Select ] ["curved", "flat"] when the waves were in the same spot at the same time.

Constructive interference occurred when the pulses were on [ Select ] ["the same side", "opposite sides"] of the slinky. You know this because the amplitude of the combined wave was [ Select ] ["larger", "smaller"] than the larger of the individual waves.

Destructive interference occurred when the pulses were on [ Select ] ["the same side", "opposite sides"] of the slinky. You know this because the amplitude of the combined wave was [ Select ] ["larger", "smaller"] than the larger of the individual waves.

In all scenarios the waves continued on with [ Select ] ["greater", "the same", "smaller"] amplitudes after meeting in the middle of the spring in the [ Select ] ["same", "opposite"] direction as they originally traveled.