Ocean Currents and Their Effects

The video explains ocean currents, which are streams of water moving in definite paths across the ocean. It categorizes them based on temperature (warm and cold) and depth (surface and deep water). The causes of ocean currents include salinity, temperature, Earth's rotation, and planetary winds. The video also discusses how land masses and monsoon winds influence ocean currents.

What are ocean currents compared to in the video?

• Deserts

• Lakes

• Rivers

• Mountains

Which type of ocean current moves from the equator towards the poles?

• Cold currents

• Warm currents

• Deep water currents

• Surface currents

What percentage of ocean water is made up of surface currents?

• 50%

• 20%

• 10%

• 90%

How does high salinity affect ocean currents?

• Stops the current

• Has no effect

• Increases density

• Decreases density

What causes convectional currents in the ocean?

• Equal heating

• Unequal heating

• Salinity

• Earth's rotation

In which direction do ocean currents move in the Northern Hemisphere due to Earth's rotation?

• East to West

• Counterclockwise

• Clockwise

• North to South

Which winds are responsible for moving equatorial waters polewards?

• Polar winds

• Trade winds

• Monsoon winds

• Westerly winds

What is the effect of monsoon winds on ocean currents in the North Indian Ocean?

• Change direction seasonally

• No effect

• Increase speed

• Decrease salinity

How does a land mass affect the flow of ocean currents?

• Increases salinity

• Speeds up the flow

• Obstructs and diverts the flow

• Decreases temperature

Which current is divided at Cape sa Rock?

• North Equatorial Current

• South Equatorial Current

• Gulf Stream

• Peru Current