Ocean Currents and Waves Quiz
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Questions and Answers

What is the primary factor that influences surface currents?

  • Water temperature
  • Wind (correct)
  • Salinity
  • Tides

Deep currents flow in the upper 100-200 meters of the ocean.

False (B)

What is the effect called when Earth's rotation deflects winds and currents?

Coriolis effect

The __________ current is known for its warm water.

<p>Gulf Stream</p> Signup and view all the answers

Match the following currents with their characteristics:

<p>Labrador Current = Cold water Gulf Stream = Warm water Swells = Smooth waves Breakers = Tumbling waves onshore</p> Signup and view all the answers

Which factor affects deep water currents primarily?

<p>Water temperature and salinity (D)</p> Signup and view all the answers

Tsunamis are typically caused by changes in weather patterns.

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

What are the two types of waves mentioned?

<p>Swells and Breakers</p> Signup and view all the answers

Which statement accurately describes the role of oceans in the water cycle?

<p>Oceans influence weather patterns. (C)</p> Signup and view all the answers

Erosion contributes to the development of ocean basins by transporting materials.

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

What are the two primary processes that led to the formation of ocean floors?

<p>Tectonic activity and volcanic action.</p> Signup and view all the answers

The _____ ridge is formed from volcanic eruptions and consists of long, undersea mountain chains.

<p>Mid-Ocean</p> Signup and view all the answers

Match the ocean research technology with its description:

<p>Sonar = Sound waves to detect underwater features Core sampling = Collecting sediment samples from the ocean floor Underwater photography = Capturing images of underwater environments Deep sea submersibles = Manned vehicles for oceanic exploration</p> Signup and view all the answers

Which of the following organizations is involved in ocean research in Canada?

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

The continental shelf is the steep slope that drops off from the continental landmass.

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

What is the significance of the abyssal plain?

<p>It is a wide, open feature of the sea formed from thick deposits of sediments.</p> Signup and view all the answers

Flashcards

Continental Shelf

A submerged portion of the continent that extends from the coastline to the continental slope.

Continental Slope

A steep incline that marks the transition between the continental shelf and the abyssal plain.

Abyssal Plain

Vast, flat areas of the ocean floor formed by thick sediment layers.

Mid-Ocean Ridge

Long underwater mountain ranges formed by volcanic activity.

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Ocean Current

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

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Tectonic Plates and Ocean Formation

The movement of tectonic plates plays a role in creating ocean basins and shaping the Earth's surface.

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Volcanic Action and Ocean Formation

Volcanoes release trapped water vapor, which cools and condenses, forming the oceans.

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Erosion and Ocean Formation

Eroded material from continents is deposited in ocean basins, shaping their features.

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Surface Currents

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

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Deep Currents

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

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Wind's Role in Surface Currents

The uneven heating of the Earth's surface leads to air movement, which transfers energy to the water through friction, causing it to move.

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Earth's Rotation and the Coriolis Effect

The Earth's rotation causes a deflection in winds and currents depending on which side of the equator they are on. It's a clockwise rotation in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.

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Influence of Continents on Currents

Solid land masses like continents force ocean currents to change direction as they encounter them.

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Water Temperature and Deep Currents

Cold water is denser than warm water, and this difference in density drives vertical circulation in the ocean, creating deep currents.

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Salinity and Deep Currents

The amount of salt in ocean water, influenced by factors like river mouths, melting glaciers, precipitation, and evaporation, affects the density of water.

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Waves

Large ripples on the ocean surface caused by the transfer of energy from moving air to water.

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