Remove the card very carefully. The blue salt water will sink, because it is heavier than the tap water. Cold water currents carry cold water away from the North Pole and the South Pole. Most of east coast is affected by warm water currents, and most of west coast is affected by cold water currents. Define trade winds - winds that blow from east to west toward the equator are called easterlies.
Westerlies blow from west to east, away from the equator.
Ocean movements are classified as current, tidal and wave. 11 Waves are caused by the rising and falling of ocean water. Fill a pan with water. Float a cork on the water. Stir the water in the center of the pan to form waves.