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Ocean Currents and Waves Quiz

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Questions and Answers

What primarily influences the flow of surface currents in the oceans?

Ocean floor topography

Wind, Earth rotation, and shape of continents (correct)

Moon phases

Temperature variations and atmospheric pressure

What effect does the Earth's rotation have on ocean currents?

It increases the temperature of ocean water.

It has no effect on currents.

It alters the direction of winds and currents. (correct)

It creates a stronger current in the Southern Hemisphere.

How does salinity affect deep water currents?

Higher salinity decreases water density.

Salinity variations do not affect density.

Higher salinity increases water density. (correct)

Freshwater increases water density.

What happens to waves as they approach the shoreline?

Wavelength decreases and wave height increases. Signup and view all the answers

What characterizes swells in ocean waves?

Smooth waves caused by wind and storms far out in the ocean Signup and view all the answers

What are tsunamis primarily caused by?

Earthquakes on the ocean floor, landslides, or volcanic eruptions Signup and view all the answers

What determines the high- and low-tide marks on a beach?

The motion of the moon and the spinning of the Earth Signup and view all the answers

Which of the following best describes breakers?

Waves that break and tumble when they reach shore Signup and view all the answers

What is a primary function of oceans in relation to the water cycle?

They serve as the primary water source. Signup and view all the answers

Which process has directly contributed to the formation of ocean basins?

Tectonic plate movement. Signup and view all the answers

What is one of the technologies used for researching the ocean floor?

Core sampling. Signup and view all the answers

Which feature is formed by thick deposits of sediments on the ocean floor?

Abyssal plain. Signup and view all the answers

Which statement about volcanic action is true?

It contributes to the construction of the ocean floor. Signup and view all the answers

What role do glaciers play in ocean formation?

They assist in moving materials towards oceans. Signup and view all the answers

Which organization is involved in ocean research in Canada?

Environment Canada. Signup and view all the answers

What defines ocean currents?

They are large bodies of ocean water moving in a specific direction. Signup and view all the answers