Ocean Layers II Quiz

The ocean layer where temperature changes most rapidly with depth is called the:

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If you consider the ocean to have many different layers of water, where would you expect to find warm water heated by the sun?

• Near the ocean floor

• Near the ocean surface

• in a layer called the thermocline

• between 500 and 1,000 meters

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NGSS.MS-ESS2-4

Why would warm water stay on the ocean surface?

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NGSS.MS-ESS2-6

Thermoclines are typically not found below this depth regardless of season and latitude:

• 10 meters

• 100 meters

• 500 meters

• 1,000 meters

A pycnocline refers to a significant change in:

• density

• temperature

• salinity

• turbidity

If all else is equal, increasing the salinity of a seawater sample will also increase its:

• temperature

• pressure

• density

• turbidity

In which oceanic layer is most of Earth's water located?

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NGSS.MS-ESS2-4

Which of the following represents the ocean layer which has the most rapid change of salinity with depth?

• salinicline

• pycnocline

• thermocline

• halocline

Label boxes A-C with the name of the ocean layer they represent.

a

b

c

pycnocline

surface layer

deep ocean

halocline

thermocline

Looking at the shape of the curve displayed on the graph, what do you think the values on the x-axis (letter D) represent? Why?

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1