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Marine science exam 2 with correct answers
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Marine science exam 2 with correct answers
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Marine science exam 2 with correctanswers
the arrangement of the hydrogen and oxygen atoms in a water molecule causes the
water molecule to - Answer -be polar
heat is measured in - Answer -calories
which processes cause surface seawater to increase in density - Answer -sea ice
formation and surface water evaporation
the dissolving ability of water is related to - Answer -the attraction between the water
molecules positive and negative charges and charges on other atoms
water heated from below distributes the added heat by ________ whereas the still
surface of the water heated from above distributes the added heat by _______ - Answer
-convection
diffusion and conduction
the average salinity of the oceans is about ______ parts per thousand (%) - Answer -35
sources of the oceans salts are believed to include - Answer -earth's crust
earth's early atmosphere
volcanic eruptions
ions are removed from seawater most effectively by - Answer -adsorption
ice cores extracted from arctic and antarctic land sites contain information describing -
Answer -carbon dioxide changes
atmospheric pollution
climate changes
ALL OF THESE ARE CORRECT
which latitudinal area tends to have the highest average surface salinity? - Answer -
tropics (25-30 degrees)
Earth's surface winds are caused by air moving from a region of _____ to a region of
_____ - Answer -high pressure to low pressure
, the Coriolis effect arises primarily from the - Answer -rotation of Earth around its axis
hurricanes derive their energy from _______ pressure zones in the ______ latitudes -
Answer -low
tropical
the greatest concentration of ozone is in the - Answer -stratosphere
the low pressure area near the equator is known as the - Answer -international
convergence zone
primary productivity is best described as - Answer -rate of production of organic carbon
upwelling areas are more productive than oceanic areas because ________ in
upwellings - Answer -organic matter is more concentrated
food chains are shorter
there are more nutrients
ALL OF THESE ARE CORRECT
a standing crop of phytoplankton can be measured by - Answer -determine the
chlorophyll a content of a sample
weighing the cells in a sample
counting the cells in the sample
ALL OF THESE ARE CORRECT
in a simple food chain with 10% efficiency, a net primary production rate at the first
trophic level is 10,000 units. how many units are available to the fourth trophic level? -
Answer -10
in which areas of the ocean is total productivity not tied to the primary productivity of
phytoplankton? - Answer -coral reefs and deep water vent communities
water - Answer -covers 70% of earths surface
we are made of 65% water
exists naturally as:
solid-ice
liquid-water
gas-vapor, steam
properties of water - Answer -high heat capacity
liquid water denser than solid form
high freezing point
high boiling point
high surface tension
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