Question

Which of the following is not correct when talking about the effects of the ocean currents?

• A. They effect commerce because they keep the harbours open even during winter
• B. Water of the ocean is kept pure
• C. Warm equatorial currents lower the temperature of the places through which they pass
• D. They do not effect rainfall over the coasts

Answer 1

The correct option is D They do not effect rainfall over the coasts

The movement of ocean currents is due to the difference in the temperature (difference in temperature of equatorial and polar regions). These currents are like a river within the sea. Due to hot and cold currents, harbors are open through the year even in winter.

Also, note that the temperature differences are between the layers, and upside and down movements also occur. Due to this phenomenon, the water of the sea is kept pure.

The movements of the currents are deep in the sea. Their formation or movements are not affected by rainfall or coastal area wave movements and also do not affect either.

Therefore, the correct answer is an option (D).