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Ocean systems
test 3 4
156
Other
Undergraduate 3
12/07/2007

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Term
Individual waves travel at ________ the speed of the wave train.
Definition
Twice (2)
Term
Stokes Drift:
Definition
accounts for a slight forward mass movement of water in each wave
Term
Wave base for a deep water wave is defined as:
Definition
1/2 the wavelength
Term
The process of dispersion is controlled by:
Definition
wave length
Term
The orbital motion traced by water molecules when a waveform travels through the area:
Definition
All of the above
Term
Deep water waves include:
Definition
Capillary waves
Term
Rogue waves are the result of:
Definition
Constructive interference
Term
When a wave "feels bottom" it
Definition
Increases wave height
Term
When an area is subjected to a mixed tide, this means that
Definition
Successive high tides or low tides are of significantly different heights through the cycle
Term
The following are examples of Western Boundary Currents EXCEPT
Definition
The north atlantic current
Term
The Ekman Spiral describes the flow response of a column of water to the wind. Responses are
Definition
A B C
Term
North Atlantic Deep Water forms
Definition
North of Iceland and near Greenland
Term
Eustatic sea level change is caused by variations in the
Definition
All of the above
Term
Primary coasts built out by land processes include
Definition
River mouth deltas
Term
Salt wedge estuaries are influenced by
Definition
Both A & C
Term
Estuaries can originate as
Definition
All of the above
Term
Winter beaches will
Definition
all of the above
Term
About 10% of the water in the world ocean makes up all of the surface currents. Most surface curents move water above the ___, the zone of maximum density change.
Definition
pycnocline
Term
Cape Cod, Massachusetts experiances what types of tides?
Definition
Semi-durnal
Term
Water moving into an enclosed basin due to an increase in sea level as a tidal crest approaches is called a ___
Definition
flood current
Term
A wave that is in water which is shallower than one-twentieth of its wavelength is considered to be a
Definition
shallow water wave
Term
Waves travel in groups called
Definition
trains
Term
Which of the following is not considered an important classification group of ocean waves
Definition
geostrophic gyres
Term
Shallow water wave velocity is a function of
Definition
water depth
Term
Seismic sea waves are
Definition
shallow water waves
Term
Western boundary currents tend to be cold, slow, broad and shallow. Eastern boundary currents tend to be hot, fast, narrow and deep.
Definition
False
Term
During an ENSO event, the peru current strenghtens and upwelling increases bringing water rich in nutrients to the surface along the west coast of South American. This results in an increase in biological productivity.
Definition
False
Term
Tsunamis have the longest wavelength
Definition
False
Term
The "Equilibrium theory of tides" developed by Newton takes into account the depth and shape of the ocean basins
Definition
False
Term
Chlorofluorocarbons CFC's cause ozone to rapidly break down into Oxygen atoms and Oxygen molecules
Definition
True
Term
Reactive Chlorine helps form ozone
Definition
False
Term
Polar stratospheric clouds promote the formation of reactive chlorine and the destruction of ozone near the south pole
Definition
True
Term
The sun exerts the most influence on the earths tides because it is the largetst body in the Sun, Earth, Moon systems
Definition
False
Term
The average global temperature has increased .4-.8 degress celsius during the last century
Definition
True
Term
There are numerous "amphidromic points" located throughout the world ocean
Definition
True
Term
Melting of the Ross Ice Shelft in Antarcticea would cause no rise in sea level
Definition
True
Term
Primary sources of methane in the atmostphere include intestinal gases from cows and termites, decay of vegetation and vegetation cleared from land
Definition
True
Term
Coastlines subject to "Diurnal Tides" would be the best areas to locate "Tidal Electrical Generating Structures"
Definition
False
Term
Tsunami are often generated by "Transform faults" cutting across divergent plate boundaries
Definition
False
Term
Only capillary waves have a short enough wavelength for them to be classified as deep water waves
Definition
False
Term
Surface tension is the principle restoring force for capillary waves with wavelengths less than 1.73 cm
Definition
True
Term
Tidal waves that prpagate across the sea surface with the continued planetary influence that formed them are classified as forced waves.
Definition
True
Term
Shallow water waves are found only in water less than 10 feet deep
Definition
False
Term
Wave height is always measured from the still water level
Definition
False
Term
Waves 21meters long will not exceed 3 meters in height
Definition
True
Term
The seiche in Lake Geneva, Switzerland oscillates vertically around a node and has no forward motion
Definition
True
Term
All seismic sea waves are tsunami but not all tsunami are seismic sea waves
Definition
True
Term
The speed of a tsunami is calculated by: celerity=square root of gravity times water depth
Definition
True
Term
Tsunami strike somewhere in the world on an average of once a year
Definition
True
Term
Any tsunami generated by an earthquake is known as a seismic sea wave
Definition
True
Term
Tsunami occur as single plunging waves of immense destructive force
Definition
False
Term
Standing waves are caused by constructive interference between incoming waves and reflected waves along a shoreline  
Definition
True
Term
Major tsunami may be triggered by potential landslides along the coasts of Hawaii in the Pacific Ocean and La Palma Canary Islands in the Atlantic
Definition
True
Term
Ozone is a molecule formed by three atoms of oxygen and occurs naturally in the atmostphere
Definition
True
Term
It is believed that a 1% decrease in atmospheric ozone would probably be accompanied by a 5% - 7% increase in human skin cancer
Definition
True
Term
Ozone is necessary in the stratosphere to help block incoming ultra violet rays, but it is a problem in the troposphere where it makes plants and animals sick.
Definition
True
Term
Tides are forced waves with wave lengths half the circumference of the earth 
Definition
True
Term
Newtons gravitational model of tides deals primarily wiht the position of the Earth, moon and sun and does not allow for the incluence of ocean depth or the position of the continental landmasses
Definition
True
Term
The Earth-Moon system revolves around the center of the earth
Definition
False
Term
Earth's rotation beneath the tidal bulges caused by gravity and inertia produces high and low tides
Definition
True
Term
The tidal cycle is 24 hours 50 minutes long because the moon rises 50 minutes later each day
Definition
True
Term
When the moons position is north of the equator, the lunar tidal bulge is also located north of the equator
Definition
True
Term
Spring tides occur when the moon, Earth and Sun form a right angle
Definition
False
Term
The amphidromic point is a no-tide point in the ocean around which the tidal crest rotates through one tidal cycle
Definition
True
Term
Transport of sediment in a zig zag pattern along a beach is called "lateral sediment translantion
Definition
False
Term
Groins are barriers built parallel ot the beach to facilitate sand moving along the shore
Definition
False
Term
Drowned river mouths along the sumergent east coast of the united states are called estuaries
Definition
True
Term
Sea caves are a late stage feature formed during headland erosion
Definition
False
Term
The ultimate fate of most coastlines is to be sraightened
Definition
True
Term
Barrier Islands are large and stable: therefore they are excellent places to build homes
Definition
False
Term
Coastal cells are sections of the coast that are in balance where sediment input equals sediment output
Definition
True
Term
Tides are always shallow water waves even though their crests pass directly over the deepest parts of the ocean
Definition
True
Term
A tidal bore is a steep wave moving upstream that is generated by the action of the tide crest in the enclosed area of a river mouth
Definition
True
Term
Intermediate water wave
Definition
Speed= complex shifting function
Term
Shallow water wave
Definition
speed= square root gravity X water depth
Term
Capillary wave
Definition
wavelength < or = 1.73
Term
Deep water wave
Definition
speed= wavelenght/ period
Term
Tsunami
Definition
period up to apporximately 20 minutes with wavelength typically 200 km
Term
Western boundary current
Definition
The australian current
Term
Eastern boundary current
Definition
The canary current
Term
Transverse current
Definition
The north pacific current
Term
Antarctic cirmupolar current
Definition
west wind drift
Term
Geostrophic currents
Definition
gyres
Term
Habitats are also called niches
Definition
False
Term
Salt marsh areas display high biodiverstiy
Definition
True
Term
Euryhaline organisms have a wide tolerance to salt
Definition
True
Term
According to the second law of thermodynamics entropy is continually decreasing throu time
Definition
False
Term
The largest of all the biogeochemical cycles is the global carbon cycle
Definition
True
Term
Most carbon found in ocean environments exists as fossil fuels oil, gas, coal and related hydrocarbons
Definition
False
Term
Nitrogen accounts for 48% of the dissolved gasses in seawater therfore it is abundantly available for use by organisms
Definition
False
Term
The chixulub crater near the yucatan mexico is the result of a volanic eruption 165 million years ago which was responsible for a catastrophic mass extinciton at that time
Definition
False
Term
Evolution simply means change
Definition
True
Term
A species is a group of actually interbreeding organisms that is reporductively isolated from all other forms of living things
Definition
True
Term
Carolus linneaus developed the biological classification used today based upon hierarchy grouping objects by degree of complexity grade or class
Definition
True
Term
Ocean water temperatures range considerably however they are usually much narrower than comparable ranges on land. Therefore marine oranisms are limited due to fewer possible habitats being available.
Definition
False
Term
Hydrostatice pressure from the constant weight of the water above them prevents most marine organisms from living in the depther of the ocean
Definition
False
Term
The larger the cell the more efficiently materials can cross the outer cell membrane to be distributed through the interior
Definition
False
Term
Benthic dwelling organisms are those that live on the sea floor
Definition
True
Term
Primary consumers are organisms that produce food from simpler compounds by the careful manipulations of energy
Definition
True
Term
Chemosynthesis is more common and more important than Photosythesis
Definition
False
Term
Autotrophs are organisms that must consume other organisms because they are unable to synthesis their own food molecules
Definition
False
Term
Each step up in the pyraid stores 10% as much mass as the level directly below it. That means that at each step 90% of the energy is lost as waste heat as organisms live and work to maintan themselves
Definition
False
Term
Dinoflagellates are the most abundat phytoplankton
Definition
False
Term
The white cliffs of dover in england consist largely of depostis of fossil coccolithophore ooze uplifted by geological forces
Definition
True
Term
Diatoms are able to propel and positions themselves with whiplike projections called flagella
Definition
False
Term
The compensation depth wher respiration equals photosynthesis defines the base of the phtic zone
Definition
False
Term
Zooplankton are heterotrophs
Definition
True
Term
Algae is a collective term for autortrophs possessing chlorophyll and capable of photosynthesis, but lacking vessels to conduct sap
Definition
True
Term
Krill shirmp like crustaceans are nearly extinct due to overfishing
Definition
False
Term
Kelp makes use of stem like structures called holdfasts to support the seaweed as is reaches for the strongly illuminated surface water
Definition
False
Term
Marine angiosperms include sea grass and mangrove trees
Definition
True
Term
Any population growing at its maximal rate without facing any environmental resistance will grow along a J-shaped population growth curve
Definition
True
Term
Any deep water community that is relatively new nad unstable is considered to be a climax community
Definition
False
Term
The deep sea scattering layer is relatively dense aggregate of fishes squid and other animals that live in the deepest portions of the ocean
Definition
False
Term
Mutualism occurs when the symbiont benefits from the bymbiotic accosciation but the host is harmed
Definition
False
Term
Cells are simply highly organized forms of life
Definition
True
Term
Organisms will not move into deeper environments due to somosis limitations created by increased water salinity
Definition
True
Term
The process of photsynthesis requires carbon dioxide water a catalyst such as chlorphyll and light energy. Glucose and oxygen are end products
Definition
True
Term
The great majority of maring organisms are warm blooded
Definition
False
Term
The compensation depth is the depth at which the production of carbonhydrated and oxygen by photsythensis through a days time will exactly equal the consumption of carbohydrated and oxygen by resiration
Definition
True
Term
The polar regions are always rich in nutrients therefore phytoplankton productivity is always high
Definition
False
Term
Population density and distribution depend on community conditions. Clumped community distribuiont is the rarest
Definition
False
Term
Primary productivity in estuaries is often extraoridnarily low because rof hte lack of nutrients ect.
Definition
False
Term
Light is an important trigger for
Definition
all of the above
Term
the major chemical elements used by organisms in meabolism are
Definition
carbon oxygen hydrogen nitrogen
Term
Diffusion of a fluid through a membrane is called
Definition
Osmosis
Term
Benthic environments include the
Definition
Continental shelf bathyal zone and abyssal zone
Term
Primary producers are also called
Definition
autotrophs
Term
Today oceanic productivity can be observed from space by measureing
Definition
None of the above
Term
Almost 95% of a diatoms frustule is composed of
Definition
silica
Term
HABs are generated by ultra rapid growth of
Definition
Dinoflagellates
Term
Chlorophyta Phaeophyta and rhodophyta are all types of
Definition
algae
Term
Communities of organisms with a broad optima lrange of temperature are said to be
Definition
eurythermal
Term
Rocky, inter tidal zones are biologically extremely rich and diverse despite
Definition
All of the above
Term
Which of the following environments is the most difficult for organisms to inhabit
Definition
Black sand beaches in hawaii
Term
Some species of tropical marine photsynthesizers live at depths of over 250 meters because they were able to evolve specialized
Definition
Accessory pigments
Term
A community is
Definition
All living things in a defined area
Term
The ____ environment produces gerater net primary productivity while the ___ envirnment is more efficient at producing biomass
Definition
terrestrial marine
Term
which one of the following is a process which does not require light to create carbohydrates but instead relases the energy held in teh chemical bonds of hyrogen and sulfur containing compounds in order to construct glucose from carbon dioxide
Definition
chemosythesis
Term
Which of the following must consume food from toehr organisms because they are unable to synthesize their own carbohydrates
Definition
Meterotrophs
Term
The most common producers of bioluminescence in the oean are
Definition
dionflagellates
Term
some species of anlerfish such as lasiognathurs catch prey in zero visisbility conditions using
Definition
a bioluminescent lure
Term
What is the catalyst in photosynthesis
Definition
chlorophyll
Term
Zooplankton are
Definition
animals
Term
Diatom
Definition
Primary producer
Term
Human
Definition
5th level top carnivore
Term
Copepods
Definition
zooplankton primary consumer
Term
Macroplankton
Definition
plankton larger than 1 cm
Term
Meroplankton
Definition
plankton only during juvenile stage
Term
Water in this area is laden with hydrogen sulfide carbon dioxide and oxygen upon which specialized archaea and bacteria live
Definition
Hydrothermal vent communities
Term
Highly pressured slightly hypersaline environment
Definition
Deep sea floor communities
Term
Area of fierce competition for food living space protection from predators and mates
Definition
coral reef communities
Term
Area of great biodiversity where organisms from within distinct band of habitats
Definition
Rocky intertidal communities
Term
Most primary productivity comes from sea grasses and magroves
Definition
Salt marsh and estuary communities
Term
Autotroph producers generatre 1000 kilograms of biomass.
Definition
10 kilograms
Term
If i made a sandwich and use 100 grams of tuna per sandwhich how many sandwiches can I make if all the tuna i have is dependant upon the trophic pyramid presented in question before
Definition
10
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