Oceans Practice/Study

The oceans were filled during tens of thousands of years with water from__________ and possibly ice from comets and asteroids.

• abyssal plains

• ridges

• precipitation

• condensation

The continental margins include the continental ________, the slope, and the rise.

• plains

• shelf

• seamounts

• ridge

The large, flat areas of the seafloor that extend across the deepest parts of the ocean floor are the______

• ridge

• rise

• seamounts

• abyssal plains

In areas where tectonic plates collide the seafloor has:

• trenches

• mid-ocean ridges

Oceanographers use ________ to explore the ocean floor.

• rovers

• submersibles

• ships

In areas where seafloors separate, the sea floor has:

• trenches

• mid-ocean ridges

Physical characteristics that are used to classify the ocean into zones include water depth, temperature, salinity, density, and the amount of __________

• salt

• biodiversity (life)

• sunlight

• carbon dioxide

Water from a sea or ocean that has an average salinity of 35 ppt. is ________.

• brackish water

• fresh water

• sea water

Which is NOT a resource of the seafloor?

• minerals

• energy

• sunlight

The measure of the mass of dissolved solids in a mass of water is called

• solubility

• salinity

• submersible