Oceanography Quiz
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Questions and Answers

What is one of the primary roles of oceans in relation to weather?

  • Control weather (correct)
  • Provide transportation
  • Generate energy
  • Store minerals

Tectonic plates have no effect on the location of ocean basins.

False (B)

Name one technology used in researching the ocean floor.

Sonar

The large, submerged part of the continent is known as the __________.

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

Match the ocean floor features with their descriptions:

<p>Continental Shelf = Submerged part of the continent Abyssal Plain = Wide, open sea features with thick sediment Mid-Ocean Ridge = Long undersea mountain chains formed from volcanic eruptions Continental Slope = Steep drop from continental shelves to ocean floor</p> Signup and view all the answers

Which of the following forces of erosion aids the development of continental drainage systems?

<p>Glaciation (A)</p> Signup and view all the answers

Deep sea submersibles are not used for ocean exploration.

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

What major event related to underwater exploration took place in 1985?

<p>The discovery of the Titanic</p> Signup and view all the answers

Which factor does NOT influence surface currents?

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

Deep currents flow above 200 m in the ocean.

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

What effect does Earth's rotation have on winds and currents?

<p>It deflects winds and currents depending on their position relative to the equator.</p> Signup and view all the answers

______ water is more dense than warmer water.

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

What type of wave is characterized by the tumble of water when a wave collapses onshore?

<p>Breakers (A)</p> Signup and view all the answers

Match each current with its characteristic:

<p>Labrador Current = Cold water Gulf Stream = Warm water</p> Signup and view all the answers

Salinity increases in seawater during high evaporation.

<p>True (A)</p> Signup and view all the answers

What is the influence of tides in the ocean determined by?

<p>The motion of the moon and the spinning of the Earth.</p> Signup and view all the answers

Flashcards

Continental Shelf

The submerged portion of a continent extending from the coastline to the edge of the ocean basin. This area is relatively shallow compared to the deep ocean.

Continental Slope

The steep slope that marks the transition from the continental shelf to the deep ocean floor. It is characterized by a rapid drop in elevation.

Abyssal Plain

Vast, flat areas on the ocean floor characterized by thick deposits of sediment. They are formed by the accumulation of material eroded from continents.

Mid-Ocean Ridge

Long, undersea mountain ranges created by volcanic activity along divergent plate boundaries. They are where new ocean floor is formed.

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Ocean Currents

A large body of ocean water that moves in a consistent direction. They are driven by factors like wind, temperature differences, and the rotation of the Earth.

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Tectonic Plate Movement

The movement of Earth's tectonic plates, which has shaped ocean basins and continents throughout history.

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Erosion

The process of rock and soil erosion, which contributes sediment to ocean basins over time.

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Volcanic Action

The release of water vapor from volcanic eruptions, which contributed to the initial formation of oceans.

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Surface Currents

The movement of water in the top 100-200 meters of the ocean, driven by factors like wind, Earth's rotation, and the shape of continents.

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Deep Currents

The movement of ocean water below 200 meters, influenced primarily by water temperature and salinity.

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What causes wind?

The force that causes air movement due to uneven heating of Earth's surface.

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What is Earth Rotation's effect on currents?

The spinning of Earth on its axis, which deflects winds and currents depending on hemisphere. This deflection is called the Coriolis effect.

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How do continents affect currents?

The way continents shape oceans, forcing currents to change direction when they encounter landmasses.

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How does water temperature affect deep currents?

The density of water changes depending on its temperature, with colder, denser water sinking and warmer, less dense water rising.

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How does salinity affect deep currents?

The amount of salt in the ocean water, which is influenced by factors such as freshwater input from rivers and glaciers, evaporation, and freezing.

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Tsunami

Giant waves caused by events on the ocean floor, such as earthquakes, landslides, or volcanic eruptions, which can be highly destructive.

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