Oceanography Basics Quiz
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Questions and Answers

What is one role of oceans in the water cycle?

  • Serve as a barrier to waves
  • Control weather (correct)
  • Provide shelter for marine life
  • Source of minerals only

Glaciation has no impact on the development of continental drainage systems.

False (B)

Name two technologies used in researching the ocean floor.

Sonar and underwater photography

The ____________ is the submerged part of the continent between the coast and the edge of the ocean basin.

<p>continental shelf</p> Signup and view all the answers

Match the following ocean research organizations with their focus:

<p>Environment Canada = Environmental monitoring and assessment Federal Fisheries = Sustainable fishery management Ocean Science Centre = Oceanographic research and education Centre for Cold Ocean Research (C-CORE) = Research on cold ocean environments</p> Signup and view all the answers

Which process has helped to shape the ocean floor along mid-ocean ridges?

<p>Volcanic action (D)</p> Signup and view all the answers

Sonar technology is no longer used in ocean research.

<p>False (B)</p> Signup and view all the answers

What is the role of ocean currents?

<p>Ocean currents are large amounts of ocean water that move in a particular and unchanging direction.</p> Signup and view all the answers

What primarily influences surface currents in the ocean?

<p>Wind (C)</p> Signup and view all the answers

Water temperature has no effect on deep ocean currents.

<p>False (B)</p> Signup and view all the answers

What is the Coriolis effect?

<p>The deflection of winds and currents due to the Earth's rotation.</p> Signup and view all the answers

The slower rise and fall of the ocean is referred to as ______.

<p>tides</p> Signup and view all the answers

Match the following types of waves with their descriptions:

<p>Swells = Smooth waves caused by wind and storms far out in the ocean Breakers = Tumultuous water when a wave collapses onshore Tsunamis = Giant waves triggered by underwater earthquakes or volcanic eruptions Waves = Result of energy transfer from moving air to water</p> Signup and view all the answers

Which of the following currents carries cold water?

<p>Labrador Current (C)</p> Signup and view all the answers

Seawater is typically saltier at the mouths of large rivers.

<p>False (B)</p> Signup and view all the answers

Flashcards

Surface currents

Flow in the top 100-200 meters of the ocean.

Deep currents

Flow below 200 meters of the ocean.

Wind's role in surface currents

Moving air caused by uneven heating of Earth's surface. This energy is transferred to water molecules, causing movement.

Earth's rotation's role in surface currents

The Earth's rotation deflects winds and currents depending on their location relative to the equator. This deflection is called the Coriolis effect.

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Water temperature's role in deep currents

Cold water is denser than warm water, leading to the formation of deep currents.

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Salinity's role in deep currents

The amount of salt in the ocean water. High salinity creates denser water, leading to deep currents.

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Tsunamis

Giant waves caused by earthquakes, landslides or volcanic eruptions on the ocean floor or near the shoreline. They can be very destructive.

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Continental Shelf

The submerged part of a continent extending from the shoreline to the edge of the ocean basin.

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Continental Slope

The steep slope that marks the transition from the continental shelf to the abyssal plain.

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Abyssal Plain

A wide and flat area of the ocean floor covered by thick sediment layers.

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Mid-Ocean Ridge

Large underwater mountain ranges formed by volcanic eruptions along areas where tectonic plates separate.

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Ocean Current

The continuous movement of a large amount of ocean water in a specific direction.

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How is the ocean floor researched?

Sonar uses sound waves to map the ocean floor, satellites monitor the ocean's surface, and core sampling collects sediment for analysis.

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What factors contribute to the formation of ocean basins?

Volcanic activity, erosion, and glaciation have all played a role in the formation of ocean basins.

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Why are oceans important?

Oceans are vital for the water cycle, control weather patterns, support diverse life, and provide resources like food and minerals for humans.

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