Understanding Ocean Currents & Tides: A Grade 7 Earth Science Guide Dive into the fascinating world of ocean currents and tides with this engaging Grade 7 earth science video. Using clear diagrams and simple experiments, learn how the moon, sun, water temperature, salinity, and wind influence the movement of ocean water. Discover how these forces shape marine environments and affect our weather. Perfect for students seeking a friendly and clear explanation of these essential earth science concep