EARTH ENERGY: Ocean currents

The movement of deep, cold, nutrient filled water to the surface of the ocean is..

• Ocean Current

• Upwelling

• Deep Currents

• Surface Currents

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What affects the density of water?

• Salt

• Temperature

• The seasons of the year

• Both A and B

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Why is upwelling important?

• Upwelling regulates ocean temperature

• Upwelling provides nutrient rich water that sustains life

• Upwelling controls the tides

• Upwelling helps sailors to navigate the seas

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Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold

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What are a circular system of currents in the Earth's major oceans?

• ocean current

• gyre

• upwelling

• conveyor belt

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Surface currents are mainly caused by

• The Coriolis Effect
• Cold and Warm Water
• Convection
• Wind

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Ocean currents move energy in the form of

• Salt
• Water
• Heat
• Oxygen

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What causes surface currents north and south of the equator to move in different directions? 

• Gases in the ocean
• The rotation of the Earth
• Temperature differences
• Continental deflection

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Salinity is

• The salt content of a substance

• The Pepper content of a substance

• The circulation of hot and cold matter

• the weather pattern of a region

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What heats the Earth's oceans?

• People

• Boats

• a heater

• sun

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