When the crest of a wave meets the trough of another wave, the amplitude of the overlapping waves is smaller than either of the two original waves. How do you think this affects the amount of energy traveling through each wave? Explain your reasoning. (Hint: Consider what happens to each wave after they meet and overlap.)

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to