Ocean Temperature, Pressure & Salinity

Front

What is the term for organisms that spawn in the open ocean but mature in freshwater?

Back

Catadromous organisms.

Front

Why can oxygen reach the deep ocean floor?

Back

Cold water is denser and carries oxygen down as it sinks.

Front

Which has a higher density: seawater or freshwater?

Back

Seawater has a higher density.

Front

During osmosis, in which direction does water move?

Back

Water moves from areas of low to high concentration of salt.

Front

Where is an object more likely to float: seawater or freshwater?

Back

An object is more likely to float in seawater.

Front

What is salinity?

Back

Salinity is the concentration of salts in water, typically measured in parts per thousand (ppt).

Front

How does temperature affect ocean water density?

Back

Colder water is denser than warmer water.

Front

What is the relationship between pressure and depth in the ocean?

Back

Pressure increases with depth in the ocean.

Front

What is the term for organisms that migrate from freshwater to the ocean to spawn?

Back

Anadromous organisms.

Front

What is the primary source of oxygen in ocean water?

Back

Photosynthesis by marine plants and phytoplankton.