Understanding Ocean Currents and Salinity

What is the relationship between salinity and the density of ocean water?

• Salinity does not affect water density.

• Higher salinity increases water density.

• Lower salinity increases water density.

• Higher salinity decreases water density.

In the lab experiment, why is it important to use different colors for each cup of water?

• To ensure the water does not mix.

• To easily distinguish between different salinity levels.

• To make the experiment more visually appealing.

• To match the colors of the ocean.

What happens when you start with the most dense water in the straw during the experiment?

• The water evaporates.

• The water changes color.

• The layers mix and become indistinguishable.

• The layers remain distinct.

How does salinity affect the movement of ocean currents?

• Salinity has no effect on ocean currents.

• Higher salinity causes water to sink.

• Lower salinity causes water to sink.

• Higher salinity causes water to rise.

Why is the deeper ocean water generally more salty?

• Because of the pressure at greater depths.

• Because less dense water rises, leaving denser, saltier water below.

• Due to the accumulation of salt over time.

• Because it is closer to the ocean floor.