Oceans Chemical Composition

Oxygen can enter the water

• through respiration
• by product of photosynthesis
• decomposition
• oxidation of metals

Tags

NGSS.MS-LS1-6

The average salinity of seawater is

• 35 ppt
• 5-25 ppt
• less than 1 ppt
• 22 ppt

Waters __________ allows it to dissolve other ions and molecules.

• acidity
• neutrality
• pH
• polarity

The layer in which temperature rapidly decreases

• halocline
• pycnocline
• thermocline

The amount of gas that seawater can hold in solution will be greater

• in warmer water
• in colder water
•  in salty water
• under less pressure

What type of bond unites the Hydrogen and Oxygen to form a water molecule?

• Hydrogen
• Polar
• Ionic
• Covalent

The layer in which density increases

• densocline
• halocline
• thermocline
• pycnocline

Salinity is measured in 

• parts per million
• parts per thousand
• milligrams
• milliliters

Studies dissolved oxygen, pH, and temperature. 

• Chemical Oceanography
• Biological Oceanography
• Geological Oceanography
• Physical Oceanography

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-4

What percentage of Earth’s surface is covered by water?

• 45%

• 51%

• 71%

• 85%

Tags

NGSS.MS-ESS2-4