Marine Bio unit 3 test

The layer in which density increases

• densocline

• thermocline

• halocline

• pycnocline

The layer in which temperature rapidly decreases

• thermocline

• pycnocline

• halocline

Salinity is measured in

• milliliters

• milligrams

• parts per thousand

• parts per million

The largest constituent in sea water is

• Potassium

• Chlorine

• Sodium

• Magnesium

Oxygen can enter the water

• through respiration

• by product of photosynthesis

• decomposition

• oxidation of metals

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

Waters __________ allows it to dissolve other ions and molecules.

• polarity

• pH

• neutrality

• acidity

How do salinity and temperature affect the density of ocean water?

• salinity increase = density increase, temp decrease = density increase

• salinity decrease = density increase, temp. decrease = density decrease

• salinity increase = density increase, temp increase = density increase

• salinity decrease = density increase, temp increase = density increase

Which of the following would not cause salinity to increase?

• Melting

• Increased volcanic activity

• Evaporation

• Freezing