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Science

7.1

QuestionAnswer
salinity - a term that describes the saltiness of water
surface ocean currents - winddriven currents that move at the ocean surface, often for long distances.
gyres - large rotating ocean current systems
deep ocean currents - densityand temperature-driven currents that move slowly within the ocean; also called thermohaline currents.
crest - the high point of a wave.
trough - the low point of a wave
amplitude - the vertical distance between a wave crest or trough and the average level of motion.
wavelength - the distance between two wave crests, or the distance between two wave troughs.
period - the time it takes for one wavelength to pass by a single point.
fetch - the amount of open water over which wind blows.
swells - long, fast-moving waves
wave train - many waves traveling together.
tsunami - a huge wave made by a large disturbance like an underwater earthquake, landslide, or volcanic eruption.
marine - a term that describes things that are part of or from the ocean.
beach - an area of coastal sand between the low tide line and the line of permanent vegetation
backshore - the part of a beach above the high tide line.
foreshore - the part of a beach between the high and low tide lines; also called the intertidal zone.
tidal flat - a flat, muddy area in the foreshore
coast - the boundary between land and a body of water like the ocean.
longshore drift - the flow of sand along a coast.
continental shelf - the ocean bottom that extends from a coast or shoreline to the continental slope.
Created by: gwcs grade 5
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