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AOM Ch 22 Oceanography Flashcards | StudBud
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AOM Ch 22 Oceanography
AOM Ch 22 Oceanography
32 terms
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#earthscience #oceanography #salinity #marinelife #temperaturezones #waterproperties #ocean
Flashcards
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Answers
1
As salinity goes up:
density goes up
density goes down
density stays the same
2
What is the average salinity of seawater?
35 ppt
71 ppt
25 ppt
85 ppt
3
What is salinity?
amount of magnesium and calcium in water
dissolved salts in water
dissolved vitamins in water
4
What factors would cause salinity to increase?
freezing and pumpkining
freezing and evaporation
melting ice and rain
5
What are sources of oxygen for the upper oceans?
just phytoplankton
atmosphere and photosynthesis
trees
hydrothermal vents
6
What is polarity?
uneven distribution of charge
even distribution of charge
cold northern and southern waters
7
How does oxygen reach the deep waters?
polar density currents
salinity gradient
temperature gradient
thermocline
8
What factors would cause salinity to decrease?
freezing and evaporation
pumpernickel and evaporation
melting ice and rain
9
What are phytoplankton?
corals
macroscopic organisms
that character in Sponge Bob
microscopic photosynthetic organisms
10
As salinity increases, the freezing point of water:
stays the same
decreases
increases
11
What is the most abundant ion found in seawater?
chloride (Cl)
magnesium (Mg)
sodium (Na)
calcium (Ca)
12
What percent of ocean volume is mixed layer?
71%
87%
33%
2%
13
As salinity increases, the boiling point of water:
stays the same
decreases
increases
14
Why does CO2 accumulate in deep water?
no light and no oxygen
no light and no trees
no light and no zooplankton to consume
no light and no phytoplankton to consume
15
What is the zone where seawater salinity changes rapidly?
polarcline
thermocline
salinecline
halocline
16
Which is the "water" hemisphere?
Southern
Northern
Eastern
Western
17
What are smokers?
underwater fish
underwater coral reef
underwater volcanic chimney
underwater volcano
18
Where does salinity tend to be below average?
red sea and dead sea
polar water and pacific ocean
equatorial waters and baltic sea
19
What is a water mass?
body of water w/ different properties throughout
body of water w/ same properties throughout
20
What are nekton?
free swimming organisms
a type of phytoplankton
algae
mini fish
21
Which is the "land" hemisphere?
Eastern
Western
Southern
Northern
22
What are zooplankton?
microanimals
nekton
animals that live in the zoo
mini watermellons
23
What is the density of water at 4 deg C?
2 gm/cm^3
1 gm/cm^3
0.5 gm/cm^3
10 gm/cm^3
24
What causes the mixed layer to be mixed?
wind and rain
wind and waves
hydrothermal vents
a giant wooden spoon
25
Where is there no polar water on the ocean floor?
Equator
Pacific Ocean
Mediterranean Sea
Indian Ocean
26
How does the average depth of the ocean compare to the average elevation of the continents?
4x's shallower
the same depth
4x's deeper
2x's deeper
27
What minerals can be mined from seawater?
popcorn salt
canning salt
magnesium and sodium chloride
just sea salt
28
As salinity increases, electrical conductivity:
stays the same
decreases
increases
29
Where does salinity tend to be above average?
mediterranean and polar water
equatorial waters
rivers
30
What percentage of the Earth's surface is covered by ocean and marginal seas?
20%
71%
84%
2%
31
What is the density of ice at 0 deg C?
0.92 g/cm^3
23 g/cm^3
0.1 g/cm^3
1 g/cm^3
32
What marine life is the first link in the food chain?
baby squid
zooplankton
phytoplankton
jelly fish
