1.3 Solubility of Gases

The concentration of gasses dissolved in the ocean are

• higher than they are in the atmosphere

• lower than they are in the atmosphere

• in equalibrium with the conentrations in the atmosphere

Wave action at the surface of the water

• makes it easier for gasses in the atmosphere to dissolve into the ocean.

• makes it harder for gasses in the atmosphere to dissolve in the ocean

• has no effect on gasses in the atmosphere dissolving in the ocean.

Carbon dioxide is more soluble in water than oxygen and nitrogen because

• carbon dioxide does not combine with water

• Carbon dioxide forms nitric acid with water.

• carbon dioxide forms carbonic acid in water

• Carbon dioxide forms salt with water

A scientists measures the amount of dissolved oxygen in samples with 4 different temperatures. All other variables are the same. Which of the following temperatures would have the highest concentration of dissolved oxygen?

• 41 degrees Celsius

• 34 degrees Celsius

• 22 degrees Celsius

• 10 degrees Celsius

As pressure increases in water

• gases are less able to dissolve

• gases are more able to dissolve

• gases are less able to stay dissolved

There are four samples of water with different salinities. Which of the samples would have the potential to hold the highest concentration of dissolved oxygen with all other variables being the same.

• 45ppt

• 32ppt

• 20ppt

• 12ppt

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Surface waters have contains the greatest concentration of D.O. because

• high levels of decomposition

• high rates of respiration

• low rates of photosynthesis

• high rates of photosythesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

D.O. can vary with latitude. Which of the following latitudes would tend to have higher concentrations of D.O.

• Polar latitudes

• Temperate latitudes

• Tropical latitudes

Tags

NGSS.MS-LS2-1

The Oxygen Minimum Layer

• is the deepest point in the ocean where oxygen can be found

• the layer of the ocean where the concentration of dissolved oxygen is at its lowest

• The layer of the ocean where the concentration of dissolved oxygen is at its highest

• The layer of the ocean where animals do not require dissolved oxygen.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Below the oxygen minimum zone,

• D.O. levels continue to decrease

• D.O. levels stay the same

• D.O. levels increase

• No information is known