Water chemistry-oceanography

Oxygen can enter the water

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

The average salinity of seawater is

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

This is know as the midnight zone

• bathyal
• abyssal
• euphotic

Phytoplankton in the ocean reflect what color?

• blue
• red
• green 
• yellow

90% of ocean life lives in the 

• abyssal zone
• euphotic zone
• bathyal zone

Violet and blue reflect

• long wavelengths
• short wavelengths
• only visible light

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

Tags

NGSS.MS-PS1-1