( ( Constructive Interference ) ( ( happens ( when ( ( two ( or ( more waves ) ) ) ( ( ( come ( together ( to ( form ( a ( ( ( larger and ) stronger ) wave ) ) ) ) ) ) , ) ( matching ( their ( ( crests and ) troughs ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Constructive) (NNP Interference)) (VP (VBZ happens) (SBAR (WHADVP (WRB when)) (S (NP (CD two) (CC or) (JJR more) (NNS waves)) (VP (VBP come) (S (ADVP (RB together)) (VP (TO to) (VP (VB form) (NP (DT a) (ADJP (JJR larger) (CC and) (JJR stronger)) (NN wave))))) (, ,) (S (VP (VBG matching) (NP (PRP$ their) (NNS crests) (CC and) (NNS troughs)))))))) (. .)))
Constructive Interference happens when two or more waves come together to form a larger and stronger wave, matching their crests and troughs .
(ROOT (S (NP (JJ Constructive) (NN interference)) (VP (VBZ is) (SBAR (WHADVP (WRB when)) (S (NP (CD two) (NNS waves)) (VP (VBP combine) (S (VP (TO to) (VP (VB create) (NP (DT a) (JJR larger) (NN wave))))))))) (. .)))