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WorksheetsOceans and Marine Life
Total questions: 15
Worksheet time: 8mins
The proportion of dissolved salts to pure water.
Acidification
Salinity
CO2
Abyssal
The chemical formula that represents salinity
NaCl
CO2
H2O
KCl
The average salinity in the open ocean is 45%
True
False. It is 40%
False. It is 35%
The two primary sources for salinity
Chemical Weathering of rocks & volcanic outgassing on the ocean floor
Earthquakes and landslides
Fish overpopulation and rapid rain
What is seawater density mostly affected by?
Acidification
Water Temperature & Salinity
Evaporation and Sublimation
Free-floating forms with little power of locomotion.
Plankton
Nekton
Benthos
Free swimmers
Plankton
Nekton
Benthos
Bottom Dwellers
Plankton
Nekton
Benthos
The deepest zone in the ocean
Neritic
Pelagic
Abyssal
Intertidal
The zone that is closest to the sun and receives the most sunlight.
Photic
Benthic
Abyssal
Intertidal
In terms of water depth, the ocean can be broken down into these two major categories.
Pelagic and Benthic
Neritic and Oceanic
Abyssal and Sublimital
Dark and Light
Acidification is caused by increased CO2 emissions in the ocean.
True
False
The chemical formula that represents the cause of acidification.
NaCl
KCl
H
CO2
What is at the top of every food chain?
Zooplankton
Nektos
Phytoplankton
Benthos
What percentage of the mass taken in at one level is passed to another?
15%
10%
30%
25%
