Chapter 4, A Survey of the Oceans, pp.84-96

Target Language or Knowledge:

Look up the following words in the green section in the back of your Science book:Hydrostatic Pressure - the pressure at any given point within the body of water.Salinity - a measure of the quality of dissolved salts and other solids in a mixture such as sea water.Upwelling - a mass of cool, deep water that comes to the surface as a result of a prevailing lane breeze that blows surface water away from the coast.Waves - a periodic back-and-forth motion that transfers energy through a medium.Rip Currents - narrow, powerful surface current near a shore that carries large volumes of water back to the sea.Countercurrent - current that flows in the opposite direction of a surface current, either beside it or beneath it.Oceanography - is the study of earth's oceans and their basins.Thermocline - the boundary in the ocean where cold, deep water meets the sun-warmed water nearer the surface.Ocean Currents - a large stream of ocean water that flows as a unit at or below the surface of the ocean.Gulf Stream - a large, warm surface current that flows northeast across the Atlantic.