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Waves and Currents
Terms
Ocean Zones
Ocean Organisms
100
Draw a wave and label the: trough, crest, wavelength, and wave height
p48 top
100
Waves move ____ through a body of water
energy
100
a large stream of moving water that flows through the ocean
current
100
In which zone is water temperature most affected by changes in weather?
surface zone
100
free-swimming organisms throughout the water column
nekton
200
Draw a diagram of the zones of the ocean: neritic, intertidal, open ocean
p 61 in textbook
200
what causes cold deep currents to form n the oceans near the poles?
sinking of dense, cold water high in salinity
200
long chains of mountains on the ocean floors
mid-ocean ridges
200
List 2 characteristics that change as you go deeper in the ocean.
pressure increases, temperature decreases, light lessens then disappears
200
critters that live on the bottom of the ocean
benthic
300
Sketch the ocean floor and label the bathygraphic features: seamount, trench, continental slope, continental shelf, abyssal plain, mid-ocean ridge
see p 44-45
300
Explain how 2 cities of similar latitude can have different climates.
ocean currents can warm/ cool the land by which they flow. For example, the Gulf Stream and North Atlantic Drift warm northwestern Europe while the Labrador Current cools Frobisher Bay and St Johns on the east coast of Canada.
300
the effect of the Earth's rotation on the direction of winds and currents
Coriolis Effect
300
the zone of the ocean located over the continental shelf
neritic
300
organisms that capture the energy from the sun and incorporate it into food via a process called photosynthesis
producers
400
Draw an oceanic food web and label the: plankton, nekton, and benthos. Draw arrows in the correct direction to show the flow of energy. Also label the producers, consumers, and decomposers.
see p62-3
400
Is a Tsunami more dangerous at sea or when it reaches land? Explain.
A tsunami is most dangerous when it reaches land. At sea, the wave has a VERY long wavelength, but is unnoticeable. When it reaches land, the wave height becomes very high, crashing into land and pushing everything in its path inland quite a distance.
400
Describe where el Nino originates and how it affects weather around the globe.
when the equatorial current in the Pacific current reverses and warm waters push east, warming waters off South America and western North America. Weather patterns can reverse, causing warmer than normal and snow free Decembers in the north Eastern US, wetter conditions on the west coast and tornadoes in the southern states.
400
explain how waves change as they approach the shoreline
wave height increases and wavelength decreases
400
are producers, consumers or decomposers most important to a food web?
I would likely argue producers, because without them, the other organisms would soon eat each other and have nothing left to eat. Producers capture the energy of the sun and turn it into food for themselves and other organisms. Your thoughtful argument to this answer is the important part.
500
compare ocean waves to currents
similarities: both occur in the ocean and involve moving water Differences: waves are more localized movements of energy through a body of water while a current is a large stream of moving water that flows through the oceans.
500
Which deep sea features are involved with sea-floor spreading?
plates expand at mid-ocean ridges
500
List 2 features that protects the beach from erosion
groins, sand dunes, or barrier islands
500
list 2 examples of plankton
phytoplankton and zooplankton