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Oceanography Vocabulary

Andrew Vickers
Across
Acronym for self-contained underwater breathing apparatus; portable air tain used by divers
NaCl (chemical formula); common table salt; the most common salt in seawater
An instrument that measures the density
A method that uses sound waves to determine the depth of the ocean floor; also called the precision depth recorder
An instrument that measures the amount of substances in seawater
An electrically charged atom or molecule formed by gaining or losing one or more electrons
A scoop-like device use to collect rock samples from the ocean floor
Small, usually microscopic plant or animal organisms that float or drift in the ocean
A cone-shaped net of fine mesh that is pulled through water to collect plankton
An instrument used to measure the direction and speed of ocean currents
The state or quality of being clear or transparent to the eye; clearness of water; depth to which light can travel in water
Down
Echo sounding using powerful sound waves that reach below the surface of the ocean floor
A cylindrical device used to obtain a sample of sediment from the ocean floor
A method that uses sound waves to view a wide area of the ocean floor; provides pictures of objects on the ocean floor
An instrument used to measure the clarity (clearness) of water
The gradual return of persons (such as deep-sea divers) or conditions to normal atmospheric pressure
A fishing or sampling net that hangs straight in the water, separating one area from another
An instrument that records the temperature at the ocean's surface and at various depths below the surface
A device that picks up sediment from the ocean floor
A large net pulled along the bottom of the ocean to gather animals that live on the ocean floor
In science - the mass (amount of matter) of an object per unit volume (space occupied); density = mass/volume (d) - m/v
The measure of the amount of dissolved salts (solids) in seawater