( ( ( The top ) ( of ( the wave ) ) ) ( ( moves ( faster ( than ( ( ( ( the ( low sides ) ) and ) this ) ( causes ( the ( wave ( to ( ( shock ( in ( the ( same way ) ) ) ) ( as ( ( the waves ) ( we ( see ( on ( the beach ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN top)) (PP (IN of) (NP (DT the) (NN wave)))) (VP (VBZ moves) (ADVP (ADVP (RBR faster)) (SBAR (IN than) (S (NP (NP (DT the) (JJ low) (NNS sides)) (CC and) (NP (DT this))) (VP (VBZ causes) (NP (DT the) (NN wave) (S (VP (TO to) (VP (VB shock) (PP (IN in) (NP (DT the) (JJ same) (NN way))) (PP (IN as) (NP (NP (DT the) (NNS waves)) (SBAR (S (NP (PRP we)) (VP (VBP see) (PP (IN on) (NP (DT the) (NN beach))))))))))))))))) (. .)))
The top of the wave moves faster than the low sides and this causes the wave to shock in the same way as the waves we see on the beach.
(ROOT (S (NP (NNP Low) (NN energy)) (VP (VBZ causes) (S (NP (NNS waves)) (VP (TO to) (VP (VB bring) (NP (NN sand)) (PRT (RP up)) (PP (IN onto) (NP (NP (DT the) (NN beach)) (PP (IN during) (NP (NNS summers))))))))) (. .)))