Unit 6: Ocean Currents and Climate (D)

What is the primary driving force behind surface currents in the ocean?

• Temperature variations

• Wind patterns

• Salinity changes

• Lunar cycles

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The Gulf Stream's impact on Western Europe results in:

• More severe winters

• Increased precipitation

• Milder winters

• Higher summer temperatures

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Which process creates the global conveyor belt of water movement?

• Surface wind patterns

• Lunar gravitational pull

• El Niño circulation

• Thermohaline circulation

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The Coriolis effect is caused by:

• Ocean temperature differences

• Variations in salinity

• Changes in wind speed

• Earth's rotation

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During El Niño, what significant change occurs?

• Trade winds strengthen

• Warm water accumulates in the Pacific

• Surface waters become colder

• Deep currents reverse direction

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Deep ocean currents are primarily driven by:

• Temperature and salinity variations

• Wind patterns

• Tidal forces

• Surface pressure

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La Niña is characterized by:

• Weaker trade winds

• Warmer Pacific waters

• Stronger trade winds

• Reduced ocean circulation

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The Gulf Stream originates in:

• The North Atlantic

• The Pacific Ocean

• The Gulf of Mexico

• The Arctic Ocean

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Thermohaline circulation is important because it:

• Creates surface waves

• Distributes heat and nutrients

• Generates wind patterns

• Controls tidal movements

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Which region experiences milder winters due to ocean currents?

• Eastern United States

• Western Europe

• Southern Asia

• Northern Africa

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