Dense water near the poles sinks, creating a current towards the equator. what would you expect to happen to the current if temperatures at the poles decreased?

Dense water near the poles sinks, creating a current towards the equator, we would expect to happen that if temperature at the poles decreased the current will increase in speed. Similarly, if the temperature at the poles increased the current will decrease in speed. And if the temperature at the equator increased, then the current will increase in speed.

From our previous experiment, we examined how many drops a penny can hold - and place drops of salt water on the penny after recording 5 trials each, take the average of each solution.