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