1. In which region of the oceans dose good mixing prevent layering?
   

Atropical region

Bpolar region

Careas near continents

Dthe open ocean

1. wind , friction, and the Coriolis effect combine to move water in which direction?
   

AIn no particular direction

Bparallel to the wind

Cagainst the wind

Dperpendicular to the wind \

1. two divers are diving in clean ocean water at a depth of 175 m. one diver shows a white maker bored to the other with writing on it what color will the marker board appear to be?
   

Aviolet

Bred

Cblue

Dorange

1. which of the following is the most important factor in diving global
   

thermohaline (conveyor belt) circulation?

Achanges in gravity

Bchanges in pH

Cchanges in density

Dchanges in wind direction and velocity

1. which ion is most abundant in seawater?
   

Asodium

Bmagnesium

Csulfate

Dchloride

1. which of the following factors interact to create currents that are less than 50 m deep?
   

Awind, temperature and salinity

Btemperature, gravity and the Coriolis effects

Cdensity temperature and salinity

Dwind, friction and the Coriolis effect

1. a polyclinic is a boundary between changing regions of which of the following properties
   

Asounds velocity

Bsalinity

Cdensity

Dtemperature

1. where would you find the coldest saltiest water in the oceans?
   

Aopen oceans zone

Bsurface-mixed zone

Ctransition zone

Ddeep zone

1. in which location is it most likely that salinity of the seawater will be the highest
   

Ain tropical regions

Balong the coast where rivers enter into the ocean

Cat the surface of the open ocean

Din polar regions