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