SemB Oceanography U2 Mid-Unit Test

Which of the following has a definite pattern of variation with respect to latitude?

• salinity

• density

• pH

• temperature

Look at the sea-surface temperature diagram. In which of the following areas would you expect to find the HIGHEST salinity?

• Antarctic

• Arctic

• North Atlantic

• mid-Atlantic

According to the density profile shown here, at which depth would you expect to find the coolest, saltiest water?

• depth A

• depth B

• depth C

• not enough information given

Which explanation best describes the development of a wave?

• air mixes with water to make a wave

• friction between moving air and underlying water imparts energy and causes a circular motion of water, but the energy moves a great distance

• friction between moving air and underlying water imparts energy causing the water to move horizontally great distances

• wind blows water along in one direction and moves it great distances

Which of the following explanations would account for Iceland's climate if there were no surface currents?

• Iceland would become drier and colder

• Iceland would be wetter and warmer

The western shoreline of a continent in the Northern Hemisphere runs directly in a north-south direction. Prevailing winds blowing from the __________ will produce coastal upwelling

• south

• east

• west

Two divers are diving in clear ocean water at a depth of 175 m. One diver shows a white marker board to the other with writing on it. What color will the marker board appear to be?

• orange

• blue

• violet

• red

Which of the following drives global thermohaline (conveyor belt) circulation?

• changes in pH

• changes in gravity

• changes in density

• changes in wind direction and velocity

Which of the following changes on a daily basis?

• beach

• coast

• shore

• shoreline

Which of the following is important in accumulating and removing sands that result in shifting barrier islands?

• rip currents

• longshore currents

• tides

• geostrophic currents