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