Relier Pairs Waves, Currents & TidesVersion en ligne 5th Grade Science Unit par Julie Copeland 1 Current 2 What causes surface currents? 3 Wind 4 Wave 5 How often do tides occur? 6 Crest 7 What are inlets? 8 What is a barrier island? 9 What are estuaries? 10 Trough 11 What are tides? The regular rise and fall of the waters in oceans and seas. The movement of Earth and the force and direction of wind. The area where a river meets the ocean The cause of most waves to form Water-filled spaces between barrier islands The highest part of a wave The repeated movement of water up and down Pieces of land surrounded by water on all sides that protect the mainland. Flowing streams of water that move along a curved path through the ocean in a specific direction This occurs about twice a day. The lowest part of the wave
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