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Laabri

2.17 Unit 2 Oceans Test MOD

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1.

Match the term to its definition.

Draggable itemarrow_right_altCorresponding Item

Salinity

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How tightly packed the particles in an object or substance is

Density

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How much energy the particles in a substance are moving around with

Temperature

arrow_right_alt

The amount of salt dissolved in water

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2.

Compare sinking and rising ocean water.

  • Low density

  • High salinity

  • Warm

  • High density

  • Cold

  • Low salinity

  • Rising Ocean Water

  • Sinking Ocean Water

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3.

Where would you expect to find a garbage patch in the North Pacific Ocean?

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4.

Deep ocean circulation is powered by differences in density, temperature, and salinity. We call this the Great Ocean Conveyor Belt.

In the North Atlantic Ocean near Greenland, ice forms. The salty, cold water sinks and warm water replaces it.

But in recent years less ice has been forming in the North Atlantic. How will that affect the Great Ocean Conveyor Belt near Greenland?

The water will become .

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5.

A teacher did a demonstration with one cup of fresh, warm water dyed yellow and one cup of salty, cold water dyed blue.

Using a piece of cardboard between them, she arranged the yellow fresh, warm water cup over the blue, cold salt water cup.

What will happen when she removes the cardboard between them?

The water dense than cold, salt water.

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6.

Then the teacher switched the arrangement of the cups.

Using a piece of cardboard between them, she arranged the blue, cold salt water cup over the yellow fresh, warm water cup.

What will happen when she removes the cardboard between them?

The water dense than cold, salt water.

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7.

What is the most common marine debris found in the ocean?

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8.

El Niño is characterized by surface temperature in the Pacific Ocean.

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9.

Were these thermal satellite images taken during El Niño or La Niña conditions?

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10.

Were these thermal satellite images taken during El Niño or La Niña conditions?

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11.

The relationship between a coral polyp and its algae (zooxanthellae) represents .

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12.

What causes coral to expel their algae symbionts?

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13.

The pH of the ocean is slightly

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14.

How does ocean acidification affect marine organisms with shells and exoskeletons?

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15.

What drives the ocean's surface currents?

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16.

Which TWO factors drive thermohaline circulation (deep ocean currents)?

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17.

Which molecule is responsible for affecting the pH of the ocean?

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18.

Surface currents in the Northern Hemisphere travel as a result of

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20.

When seawater freezes, what happens to the salt particles?

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21.

Select the TWO areas of upwelling (where deep ocean water rises to the surface)

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22.

Below is a model of the Northern Atlantic Ocean.

Identify the location where water becomes very dense due to low temperature and high salt concentration.

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23.

Which fishing method would be LEAST likely to produce by-catch?

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24.

What is eutrophication?

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25.

Which human source is a major contributor of nutrients that cause the Gulf dead zone?

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26.

How can an algae bloom create hypoxic (low oxygen) conditions?

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27.

What parts of this unit did you enjoy?

What parts of this unit could be improved?