As a Tsunami Enters a Bay or Fjord, Wave Height

question 23

Multiple Choice

As a tsunami enters a bay or fjord, wave height ____.

• A)increases because the water depth deepens
• B)increases because water is warmer
• C)decreases because the water depth decreases near shore
• D)increases because the wave is forced into a narrower space
• E)decreases only if bay water is shallower, increases if it is deeper

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Definitions:

Benthic Zone

The ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and sub-surface layers.

Littoral Zone

The shallow nearshore area of a body of water, where sunlight can reach the bottom, supporting diverse aquatic plants and animals.

Limnetic Zone

The open surface waters in a freshwater habitat, away from the shore, where there is enough light penetration to support photosynthesis.

Profundal Zone

The deep zone of a body of water, below the range of effective light penetration, where photosynthesis cannot occur.