Understanding Ocean Currents and Salinity

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

• Higher salinity decreases water density.

• Higher salinity increases water density.

• Salinity has no effect on water density.

• Lower salinity increases water density.

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

• To ensure the water absorbs the salt better.

• To prevent the water from evaporating.

• To easily identify the different layers based on salinity.

• To make the experiment visually appealing.

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

• The water evaporates faster.

• The water changes color.

• The layers mix and become indistinguishable.

• The layers become more distinct.

How does salinity affect the movement of ocean currents?

• Lower salinity causes water to sink.

• Higher salinity causes water to sink.

• Higher salinity causes water to rise.

• Salinity has no effect on ocean currents.

Why is the deeper ocean generally more salty?

• Because of the presence of underwater volcanoes.

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

• Due to the accumulation of salt over time.

• Because of the higher pressure at depth.