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Oceans
Term | Definition |
---|---|
salinity | amount of salt dissolved in water |
wave | transfer of energy through matter |
crest | top of a wave |
trough | bottom of a wave |
wavelength | distance between waves |
wave height | crest to trough |
wave frequency | number of waves passing a point per unit of time |
currents | body of water moving in a definite direction |
cold water currents | cold water sinks and moves toward equator |
warm water currents | warm water floats toward poles |
tides | rising and falling of the ocean |
spring tide | stronger tide occurring during new or full moon |
neap tide | weaker tide occurring during first or third quarter moon |
continental shelf | edge of continent, ocean water is very shallow here |
continental slope | between shelf and ocean floor |
abyssal plain | flat area of ocean floor |
mid-ocean ridge | underwater mountain range formed from diverging plates |
seamount | submarine mountain |
guyot | seamount with a flat top |
trench | deepest areas of ocean floor formed from converging plates |
estuary | tidal mouth of a large river |
groin | long narrow pile of rocks used to prevent beach erosion |