Test on Ocean Sediments, Ocean Floor, El Nino and La Nina
True
False
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A) Indian
B) Arctic
C) Atlantic
D) Pacific
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True
False
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A) 70
B) 60
C) 50
D) 40
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True
False
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A) oceanic ridges
B) hot water
C) mineral-rich waters
D) all of these
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A) sound pulse travels from a ship to the seafloor and back
B) radar beam to travel from a harbor patrol boat to a fuzz-buster on a speeding yacht
C) light beam to travel from a satellite at a known altitude to the sea bottom and back
D) radar beam to travel from a ship to the seafloor and back
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A) are submarine canyons found near Australia
B) are volcanoes that form on the ocean floor
C) are a special type of oceanic trench
D) form only in the Pacific Ocean basin
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True
False
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A) pycnocline
B) halocline
C) thermocline
D) salinocline
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True
False
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A) rift zones
B) mountainous topography
C) volcanic structures
D) all of these
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A) sodium chloride
B) sodium bicarbonate
C) potassium bromide
D) magnesium chloride
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A) they are long and narrow depressions
B) they are sites where plates plunge back into the mantle
C) they may act as sediment traps
D) they are geologically very stable
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A) degree of preservation
B) rate of deposition
C) input from other sediment types
D) dilution
E) All of the above factors are important.
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a. biogenous
b. terrigenous
c. hydrogenous
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A) hydrogenous sediment
B) biogenous sediment
C) terrigenous sediment
D) both terrigenous and biogenous sediment
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A. biogenous
b. terrigenous
c. hydrogenous
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A. biogenous
b. terrigenous
C. hydrogenous
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A) Indian
B) Atlantic
C) Pacific
D) Arctic
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A) the Southern Hemisphere has much more water surface than the Northern Hemisphere
B) the Northern Hemisphere has much more water surface than the Southern Hemisphere
C) the percentage of land and water is about the same in both the Northern and Southern Hemispheres
D) none of the above are true
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A) at the top of the continental slope
B) at the top of a mid-ocean ridge
C) at the seaward edge of a deep ocean trench
D) between an abyssal plain and continental slope
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True
False
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A) lie at depths exceeding 6 kilometers
B) are geologically old features
C) are heavily mantled with sediment
D) contain active rift zones
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A. biogenous
B. terrigenous
C. hydrogenous
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True
False
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A. biogenous
B. terrigenous
c. hydrogenous
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True
False
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A) excavation of submarine canyons
B) density current
C) formation of seamounts
D) deposits of graded beds
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True
False
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A) 2, 3, 4, & 5
B) 2, 3, & 4
C) 2 & 3
D) 2 & 4
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A) 2 & 3
B) 3 & 4
C) 3
D) 2
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A. biogenous
B. terrigenous
C. hydrogenous
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A) continental slope
B) submarine canyon
C) continental shelf
D) continental rise
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A) are sites for submarine eruptions of basaltic lava A) are sites for submarine eruptions of basaltic lava
B) are where young lithosphere is added to the edges of spreading, oceanic plates
C) terrigenous sediment coverings are very thin or absent
D) sediments include thick siliceous ooze deposits and sandy turbidite beds
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A) the particles are precipitated in the water column below the and then sink to the bottom depth of sunlight penetration
B) the particles are precipitated in warm, surface waters and sink to the bottom
C) the particles are precipitated by bottom-dwelling organisms
D) the particles settle out from calcite-rich turbidity currents at depths greater than 15,000 feet
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A) by rivers during the ice age
B) because of a plate plunging into the mantle
C) by faulting
D) none of these
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A) Submarine canyons
B) Deep ocean trenches
C) Abyssal seamounts
D) Rift valleys on mid-ocean ridges
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A) 2 & 3
B) 2
C) 1& 5
D) 3 &4
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A) foraminiferans
B) corals
C) coccolithophores
D) phosphorites
E) radiolarians
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A) neritic currents.
B) rivers.
C) turbidity currents.
D) glaciers.
E) wind
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A) a volcanic eruption
. B) a river delta.
C) a glacier.
D) turbidity currents
E) the wind
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A) uranium.
B) iridium.
C) manganese.
D) strontium. D) strontium.
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A) silt-sized particles
B) large particles such as gravel
C) cosmogenous sediments
D) clay-sized particles
E) manganese nodules
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A) a rapid steepening of the gradient occurs
B) the water depth reaches 100 fathoms
C) it meets an oceanic ridge
D) the gradient becomes very gentle
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A) abyssal plain far from a continent.
B) continental rise.
C) crest of a mid-ocean ridge.
D) continental shelf.
E) All of the above locations contain manganese nodules.
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A) phosphorites
B) diatoms
C) radiolarians
D) glauconite
E) foraminiferans
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True
False
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