Oceans Unit Test

Two divers are swimming in clear ocean water at a depth of 150 m. One diver is wearing a white wetsuit, which of the following colors would be visible?

• Blue

• Red

• Orange

• Violet

A halocline is a boundary between changing regions of which of the following properties?

• temperature

• salinity

• density

• sound velocity

Which of the following is a region with steep undersea mountains and deep valleys?

• ocean basin floor

• continental margin

• ocean ridge

• ocean trench

The Salinas River empties into the Pacific Ocean and cuts into the continental shelf, thereby forming which of the following features?

• continental margin

• oceanic ridge

• guyot

• submarine canyon

When the earth, moon, and sun are in a line, the moon's gravity and the sun's gravity work together.

Which tide is experienced when this happens?

• high tide

• low tide

• spring tide

• neap tide

Which of the following currents has a great impact on reshaping the shoreline?

• longshore current

• flood current

• ebb current

• tidal current

In which environment would you find dolphins?

• abyssal

• sublittoral

• rocky shore

• pelagic

Glue secreted by seaweed or barnacles is an adaption to which of the following environments?

• deep ocean

• rocky shore

• shallow oceanic

• sublittoral

A cold-tolerant and salt-tolerant type of crab would likely be found in which part of the ocean?

• surface-mixed zone

• transition zone

• deep zone

• polar zone

You would probably use seismic, sonar, and satellite technologies to locate which of the following resources?

• salt

• sand

• natural gas

• manganese