Oceans and Ocean Water Composition

Front

What happens to density as temperature increases?

Back

Density decreases.

Front

What is the definition of salinity?

Back

Salinity is the measure of how much salt is dissolved in a liquid.

Front

Which ocean is represented by the number 2 on a map?

Back

The Pacific Ocean.

Front

How do volcanoes and hydrothermal vents affect ocean water?

Back

They increase the salinity of the water.

Front

What two factors affect the density of ocean water?

Back

Salinity and temperature.

Front

What is the relationship between temperature and density in ocean water?

Back

As temperature decreases, density increases.

Front

What is the primary component of ocean water?

Back

Water (H2O) with dissolved salts.

Front

How does salinity affect the buoyancy of objects in ocean water?

Back

Higher salinity increases buoyancy.

Front

What is the average salinity of ocean water?

Back

About 35 parts per thousand (ppt).

Front

What role do ocean currents play in temperature distribution?

Back

Ocean currents help distribute heat across the globe.