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FrançaiseCaption: Tsunamis National Oceanic and Atmospheric Administration
Subject: Tsunamis are just long waves — really long waves. But what is a wave? Sound waves, radio waves, even the wave in a stadium all have something in common with the waves that move across oceans. It takes an external force to start a wave, like dropping a rock into a pond or waves blowing across the sea.…
Keys: education, tsunamis, education