Oceans Question Preview (ID: 1493)
Ocean Water And Life.
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What is the amount of dissolved substances in water?
a) salt
b) salinity
c) temperature
d) chemical weathering
Where do ocean salts come from?
a) chemical weathering
b) earth's interior
c) run off from land
d) both a and b
What is a thermocline?
a) change of density with depth
b) change of temperature with depth
c) change of salinity
d) change of sunlight
How do plankton move?
a) Swim
b) Crawl
c) Float
d) Walk
What is photosynthesis?
a) use of light to make food
b) use of chemicals to make food
c) use of energy to make food
d) something that plants do
What is a tropic level?
a) part of a food web
b) a feeding stage
c) what the arrow points to
d) part of a food chain
What is a food chain?
a) an interconnected or interrelated food thingy
b) a source of food and energy
c) a sequences of organisms that transfer energy
d) somethings all animals do
How are marine organisms classified?
a) what they eat
b) how they move
c) where they live
d) both 3 and 4
What is a pycnocline?
a) change of temperature with depth
b) change of salinity
c) change of density with depth
d) change of sunlight
Name the 3 ocean layers
a) mixed, surface, deep
b) oceanic, transition, mixed
c) mixed, transition, deep
d) intertidal, oceanic, photic
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