Ocean Currents

How do ocean currents affect marine life?

• They have no effect on marine life.

• They help distribute nutrients and oxygen, influencing the habitats and migration patterns of marine organisms.

• They only affect the temperature of the water.

• They are primarily responsible for the color of the ocean.

What is the Global Conveyor Belt?

• A large-scale ocean current system that circulates water around the globe, influenced by temperature and salinity variations.

• A type of underwater volcano that erupts periodically.

• A method of transporting goods across oceans using ships.

• A phenomenon that describes the migration patterns of marine animals.

What is density in relation to ocean water?

• Density is the mass of water per unit volume, which is affected by temperature and salinity.

• Density is the amount of salt in ocean water.

• Density is the temperature of ocean water at different depths.

• Density is the pressure exerted by ocean water at the surface.

What is the Coriolis effect?

• The deflection of moving objects caused by the rotation of the Earth.

• A phenomenon that causes tides to rise and fall.

• The process of air moving from high to low pressure areas.

• The effect of gravity on ocean currents.

What is the role of cold salty water in ocean currents?

• It warms the surface water and promotes evaporation.

• It is less dense and floats on top of warmer water.

• It is denser and sinks, contributing to the movement of ocean currents in the Thermohaline circulation.

• It absorbs sunlight and increases water temperature.

What does salinity refer to?

• The amount of freshwater in a body of water.

• The concentration of salts in water, which affects the density of ocean water.

• The temperature of ocean water.

• The level of pollution in water.

What causes warm ocean currents?

• The sun's heating of ocean water near the equator

• Cold winds blowing from the poles

• Underwater volcanic activity

• The rotation of the Earth

What happens to materials that are less dense than water?

• They will sink to the bottom.

• They will float.

• They will dissolve in water.

• They will evaporate.

What is upwelling?

• Upwelling is the process where deep, cold, nutrient-rich water rises to the surface, supporting marine ecosystems.

• Upwelling is the phenomenon where warm water sinks to the ocean floor, creating a barrier for marine life.

• Upwelling refers to the movement of water from the surface to the deep ocean, reducing nutrient availability.

• Upwelling is the process of water evaporating from the ocean surface, leading to increased salinity.

What is the relationship between ocean currents and climate?

• Ocean currents have no effect on climate.

• Ocean currents only affect marine life.

• Ocean currents play a crucial role in regulating the Earth's climate by distributing heat and influencing weather patterns.

• Ocean currents are solely responsible for oceanic pollution.