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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 |