Factors Influencing Ocean Water Movement

The video explores factors influencing ocean water movement, including temperature, salinity, wind, Coriolis force, the sun, and ocean floor topography. Temperature affects water density, creating currents. Salinity impacts density, causing water to sink or rise. Wind generates surface currents, while the Coriolis force, due to Earth's rotation, creates gyres. The sun's heat causes thermal expansion, affecting water levels. Ocean floor features like ridges and trenches alter current strength and direction.

What happens to water molecules when the temperature decreases?

• They expand and become less dense.

• They contract and become denser.

• They evaporate.

• They remain the same.

Which current carries warm water from the equatorial region to the North Atlantic Ocean?

• North Atlantic Equatorial Current

• Canary Current

• Gulf Stream

• Labrador Current

What is the relationship between salinity and the density of ocean water?

• Lower salinity means higher density.

• Higher salinity means higher density.

• Higher salinity means lower density.

• Salinity does not affect density.

What causes the creation of surface currents in the ocean?

• Wind

• Salinity variations

• Temperature changes

• Coriolis force

Which winds blow from west to east?

• Trade winds

• Monsoon winds

• Westerlies

• Polar easterlies

What is the effect of the Coriolis force on ocean currents in the Northern Hemisphere?

• Anti-clockwise movement

• Clockwise movement

• Random movement

• No effect

Why is the ocean water level higher near the equator?

• Due to higher salinity

• Due to thermal expansion

• Due to Coriolis force

• Due to wind pressure

What happens to ocean currents when they pass through a narrow opening?

• They slow down

• They change direction

• They become very strong

• They disappear

What is the effect of a ridge or mountain at the ocean bed on moving water?

• The water will change direction

• The water will stop moving

• The water will go upward

• The water will go downward

What are deep ocean landforms?

• Only mountains and valleys

• All geographic features found on land

• Only plains and canyons

• Only volcanoes and trenches