Week 13: Ocean Circulation Answers

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Why are electrical outputs from a turbine generator highest during a spring tide?

A high tide comes in faster.

The gravitational pull of the moon is less.

The Sun and the moon pull in opposite directions.

The difference between high tide and low tide is the greatest.

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Which source provides the energy that causes most waves to form?

currents

earthquakes

sunlight

wind

Which statement explains what upwelling causes?

Upwelling causes tides to rise and fall.

Upwelling causes changes in the direction of currents.

Upwelling causes nutrients, minerals, and tiny organisms to rise.

Upwelling causes currents in the Pacific Ocean to change direction.

Which best describes a tsunami?

large powerful wave caused by an earthquake

when the waves hit the shore at an angle and transport sand

alternating rise and fall of the ocean

an irregular climate event caused by ocean currents in the Pacific Ocean

Which two words identify the scientific parts of a wave?

breaker and crest

crest and trough

current and breaker

drift and current

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