1. what are cold currents? A. currents flowing toward the equator along the east coasts of continents

B. currents flowing toward the equator along the west coasts of continents

C. currents flowing from the equator along the east coasts of continents

D. currents flowing from the equator along the west coasts of continents

2. How do compare cold curents and warm currents?

A. They are shallow, and cold currents flow toward the equator while warm currents flow away from the equator.

B. Cold currents and warm currents are shallow, and they both flow toward the equator.

C. They are deep, and cold currents flow toward the equator while warm currents flow away from the equator.

D. Cold currents are deep, but warm currents are shallow; they both flow away from the equator.

3.Read these sentences from the text.

While ocean currents are shallow level circulations, there is globalcirculation, which extends to the depths of the sea called theGreat Ocean Conveyor. Also called the thermohaline circulation, itis driven by differences in the density of the sea water, which iscontrolled by temperature (thermal) and salinity (haline).In the northern Atlantic Ocean, as water flows north it cools considerably increasing its density. As it cools to the freezing point, sea ice forms with the "salts" extracted from the frozen water making the water below more dense. The very salty water sinks to the ocean floor.

Based on the text, what conclusion can you make about the water in the Great Ocean Conveyor?

A. the warmer the water, the denser it is

B. the warmer the water, the saltier it is

C. the colder the water, the denser it is

D. the colder the water, the less dense it is