hydrosphere & oceanography section 1 MCQ Questions & Answers Detailed Explanation

Answer: (b)

Atlantic Ocean has the shape of an English alphabet S. Indian Ocean has ‘M’ Shape.

The Arctic Ocean has ‘U’ shape, while the Pacific Ocean is triangular in shape.

Answer: (c)

Canary Current is a cold current which blows in the North Atlantic Ocean.

Answer: (d)

Climates in the Southern Hemisphere tend to be milder than those in the Northern Hemisphere.

Southern Hemisphere has significantly more ocean and less land. The water heats up and cools down more slowly than land.

Answer: (a)

Answer: (c)

Sea breezes and all other winds blow from more atmospheric pressure to less atmospheric pressure.

The water heats up and cools down slower than land. During the day, the land is heated up and is less dense than the water while at night, the water is less dense than the land. The denser it is, the more atmospheric pressure there is.

Therefore, sea breezes occur during the day but not at night.

Answer: (c)

El Nino is a cold water current which runs along the coast of Peru and Chile. It is also a climate pattern which occurs every five years.