Test
Exam 3
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Preguntas del test (28)
1Thermohaline circulation is driven by
- Adensity differences
- Btemperature differences
- Conshore winds
- Doffshore winds
2Much of the deep Water filling the world oceans forms in
- Athe Arctic Ocean.
- Bthe north Pacific Ocean.
- Cthe north Atlantic Ocean
- Dthe Indian Ocean
3Coastal and equatorial upwelling
- Adecreases productivity
- Bbrings nutrient poor water to the surface
- Cis caused by gravity
- Dis hazardous to ocean shipping lanes
4Wind blowing northward toward the equator along the Peruvian coast (00-200S latitude) may be expected to cause
- Adownwelling
- Bdevelopment of a deep thermocline
- Cupwelling
- Dunusually salty surface waters.
5The densest water in the world’s oceans is the
- AMediterranean Water
- BNorth Atlantic Deep Water
- CAntarctic Bottom Water
- DOceanic Common Water
6If thermohaline circulation (the global conveyor belt) stopped completely
- Anorthern Europe would get a lot warmer.
- Bthe entire earth would freeze into a ball of ice.
- Crainfall in the tropics would increase greatly.
- DCalifornia would fall into the ocean.
- Enorthern Europe would likely get colder.
7During normal conditions in the equatorial Pacific Ocean
- Asea level is higher in the western Pacific than in the eastern Pacific
- Bsea level is the same everywhere
- Csea level is higher in the eastern Pacific than in the western Pacific
8At a depth of _________, orbital motion in a deep-water wave has decreased to almost zero
- Atwice the wave amplitude
- Bhalf the wave height
- Cone-quarter the wavelength
- Dhalf the wavelength
- Eone third the wave height
9As a wave enters shallow water:
- Ait will slow down.
- Bits steepness will increase.
- Cits wavelength will decrease.
- Dits period will decrease
- Ea (it will slow down) b (its steepness will increase.) and c (its wavelength will decrease.)
10 In the North Pacific Ocean surface waters never become dense enough to sink because the water:
- Ais a darker color
- Bis too cold
- Cis not cold enough.
- Dhas too high a salinity.
- Ehas too low a salinity.
11A deep ocean swell approaching the coast with a wavelength of 80 m will become a shallow water wave (“feel the bottom”) at a water depth of ___ .
- A40 m
- B20 m
- C8 m
- D4 m
- E2 m
12Both the moon and the sun exert an influence on Earth ocean tides, but the moon’s influence is more. Why?
- Athe mass of the Sun is greater than that of the Moon
- Bthe distance between the Earth and the Sun is very large
- Cthe moon is much closer to the Earth than the Sun
- Dthe mass of the Earth is greater than the moon.
13The most important factors controlling the height of a wave are:
- Ahow long the wind blows in a given direction.
- Bthe distance over which the wind blows (fetch)
- Chow fast the wind blows
- Dthe latitude of the blowing wind
- Ea (how long the wind blows in a given direction.) b (the distance over which the wind blows (fetch)) and c (how fast the wind blows).
14El Niño conditions are the result of
- Alarge storms over the South Pacific
- Ba decrease in the strength of the Easterly Trade Winds
- Can increase in the strength of the Easterly Trade Winds
- Dan increase in sea surface temperatures over the western Pacific Warm Pool.
15The 2011 tsunami in Japan moved across the Pacific Ocean at speeds up to
- A4.5 miles per hour
- B45 miles per hour
- C450 miles per hour
- Das fast as the wind could push it
16Waters in the deep ocean are 'oldest' in the
- Athe Southern Ocean.
- Bthe north Pacific Ocean.
- Cthe north Atlantic Ocean
- Dthe Indian Ocean
17 In the Atlantic Ocean, tsunamis are not possible because there are no subduction zones.
- Atrue
- Bfalse
18During an El Niño, the thermocline in the eastern tropical Pacific Ocean
- Abecomes deeper
- Bbecomes shallower
- Cstays the same
- Dmoves to the north
19More than 80% of all tsunamis occur in the Pacific Ocean because
- A80% of the Earth's water is in the Pacific Ocean
- Bthe longest mid-ocean ridge is in the Pacific.
- Cthe Pacific is almost surrounded by subduction zones.
- Dthe Pacific has the most coastline of any ocean
20if a tsunami wave enters a v-shaped bay with a wide opening and narrow top, the tsunami will
- Anot change in height as it moves along the bay.
- Bdecrease in height due to focusing of the wave.
- Cbe turned to right because of Coriolis.
- Ddecrease in height as it feels the bottom of the bay.
- Eincrease in height due to focusing of the wave.
21The figure to the right is typical of a...
- Adiurnal tide
- Bsemidiurnal tide.
- Cmixed tide
- Dspring tide
- ENone of the above.
22The largest amplitude tides (spring tides) that occur every two weeks during the new moon and full moon are caused by
- Athe earth, moon and sun all being aligned.
- Bthe earth being slightly closer to the moon at those times.
- Cresonance of the tides with the waves.
- Dthe moon being at 90 degrees to a line drawn fro the earth to the sun.
23The Walker Circulation in the Pacific Ocean
- Ais another name for the Hadley Circulation.
- Bis an ocean current near Japan.
- Cshifts to the east during an El Niño.
- Dshifts to the west during an El Niño.
- Eis completely unaffected by El Niño.
24Determine the celerity (c = speed) of waves with a wavelength (L) of 25m and a wave period (T) of 10 seconds. Use this simple formula of C = L/T m/sec.
- A2.5 m/sec
- B250 m/sec
- C0.4 m/sec
- D12 m/sec
- E3.5 m/sec
25Surface ocean circulation is driven primarily by _______ and modified by ________.
- Adensity differences; the Coriolis effect.
- Bdensity differences; differences in salinity and temperature
- Clatitude; differences in salinity.
- Dwind; the Coriolis effect.
- Ewind; land.
26The effects of an El Niño
- Aare restricted to the tropical Pacific Ocean.
- Binclude an increased chance of drought throughout the world.
- Cinclude an increase in the number of fish caught offshore of Peru
- Doften include increased amount of rain in coastal california and the southeastern united states
27Rogue waves are best described as
- Athe highest waves of a tsunami
- Ba breaking internal wave.
- Ca strong rocking motion in a harbor.
- Da rare very large wave that develops from the interaction of two wave patterns.
28A tsunami wave _________________
- Ais generated by volcanic activity.
- Bbehaves like a shallow water wave.
- Cbehaves like a a deep water wave.
- Dmoves at walking speed because it can always feel the ocean bottom.
Información
- Descripción
- Test sobre Exam 3, creado por Jacqueline Vancura el 17/12/2019.
- Autor
- Jacqueline Vancura
- Idioma
- English
- Visitas
- 14
- Valoración
- Aún sin valoraciones Valora este test